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_label23_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 20:06:58,754 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 20:06:58,758 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 20:06:58,775 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 20:06:58,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 20:06:58,778 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 20:06:58,779 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 20:06:58,781 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 20:06:58,783 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 20:06:58,783 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 20:06:58,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 20:06:58,786 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 20:06:58,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 20:06:58,788 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 20:06:58,789 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 20:06:58,790 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 20:06:58,794 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 20:06:58,801 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 20:06:58,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 20:06:58,806 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 20:06:58,808 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 20:06:58,809 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 20:06:58,811 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 20:06:58,812 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 20:06:58,812 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 20:06:58,814 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 20:06:58,815 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 20:06:58,816 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 20:06:58,817 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 20:06:58,819 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 20:06:58,820 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 20:06:58,821 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 20:06:58,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 20:06:58,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 20:06:58,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 20:06:58,824 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 20:06:58,825 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 [2018-09-15 20:06:58,849 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 20:06:58,850 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 20:06:58,850 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 20:06:58,851 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 20:06:58,851 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 20:06:58,851 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 20:06:58,851 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 20:06:58,852 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 20:06:58,852 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 20:06:58,852 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 20:06:58,852 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 20:06:58,852 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 20:06:58,853 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 20:06:58,853 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 20:06:58,853 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 20:06:58,854 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 20:06:58,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 20:06:58,854 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 20:06:58,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 20:06:58,854 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 20:06:58,854 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 20:06:58,855 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 20:06:58,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 20:06:58,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 20:06:58,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 20:06:58,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 20:06:58,856 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 20:06:58,856 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 20:06:58,856 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 20:06:58,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 20:06:58,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 20:06:58,857 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 20:06:58,857 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 20:06:58,857 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 20:06:58,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 20:06:58,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 20:06:58,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 20:06:58,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 20:06:58,940 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 20:06:58,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-09-15 20:06:59,276 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ffb1083a/870b899d0f844afa8994d502c18a3036/FLAGc827f175f [2018-09-15 20:06:59,582 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 20:06:59,583 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-09-15 20:06:59,598 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ffb1083a/870b899d0f844afa8994d502c18a3036/FLAGc827f175f [2018-09-15 20:06:59,620 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ffb1083a/870b899d0f844afa8994d502c18a3036 [2018-09-15 20:06:59,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 20:06:59,635 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 20:06:59,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 20:06:59,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 20:06:59,643 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 20:06:59,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:06:59" (1/1) ... [2018-09-15 20:06:59,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a46a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:59, skipping insertion in model container [2018-09-15 20:06:59,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:06:59" (1/1) ... [2018-09-15 20:06:59,659 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 20:07:00,148 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 20:07:00,167 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 20:07:00,375 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 20:07:00,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00 WrapperNode [2018-09-15 20:07:00,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 20:07:00,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 20:07:00,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 20:07:00,434 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 20:07:00,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 20:07:00,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 20:07:00,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 20:07:00,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 20:07:00,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (1/1) ... [2018-09-15 20:07:00,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 20:07:00,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 20:07:00,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 20:07:00,838 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 20:07:00,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (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 [2018-09-15 20:07:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 20:07:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 20:07:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 20:07:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 20:07:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 20:07:00,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 20:07:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 20:07:00,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 20:07:04,576 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 20:07:04,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:07:04 BoogieIcfgContainer [2018-09-15 20:07:04,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 20:07:04,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 20:07:04,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 20:07:04,584 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 20:07:04,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:06:59" (1/3) ... [2018-09-15 20:07:04,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a399cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:07:04, skipping insertion in model container [2018-09-15 20:07:04,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:07:00" (2/3) ... [2018-09-15 20:07:04,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a399cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:07:04, skipping insertion in model container [2018-09-15 20:07:04,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:07:04" (3/3) ... [2018-09-15 20:07:04,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label23_true-unreach-call_false-termination.c [2018-09-15 20:07:04,598 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 20:07:04,609 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 20:07:04,663 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 20:07:04,664 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 20:07:04,664 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 20:07:04,665 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 20:07:04,665 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 20:07:04,665 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 20:07:04,665 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 20:07:04,665 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 20:07:04,665 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 20:07:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-15 20:07:04,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-15 20:07:04,702 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:07:04,703 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] [2018-09-15 20:07:04,704 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:07:04,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1395557711, now seen corresponding path program 1 times [2018-09-15 20:07:04,713 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:07:04,713 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-09-15 20:07:04,716 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], [213], [215], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-15 20:07:04,785 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:07:04,785 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:07:06,191 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:07:06,193 INFO L272 AbstractInterpreter]: Visited 38 different actions 38 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 20:07:06,210 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:07:06,836 INFO L232 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 80.05% of their original sizes. [2018-09-15 20:07:06,836 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:07:07,136 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:07:07,138 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:07:07,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 20:07:07,138 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:07:07,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 20:07:07,154 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 20:07:07,155 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 20:07:07,159 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-15 20:07:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 20:07:10,985 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-15 20:07:10,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 20:07:10,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-09-15 20:07:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 20:07:11,010 INFO L225 Difference]: With dead ends: 693 [2018-09-15 20:07:11,010 INFO L226 Difference]: Without dead ends: 436 [2018-09-15 20:07:11,018 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 20:07:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-15 20:07:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-15 20:07:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-15 20:07:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-15 20:07:11,104 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 39 [2018-09-15 20:07:11,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 20:07:11,105 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-15 20:07:11,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 20:07:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-15 20:07:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-15 20:07:11,111 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:07:11,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 20:07:11,112 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:07:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1586647837, now seen corresponding path program 1 times [2018-09-15 20:07:11,113 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:07:11,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 125 with the following transitions: [2018-09-15 20:07:11,114 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], [213], [215], [218], [226], [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], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-15 20:07:11,120 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:07:11,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:07:19,437 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:07:19,437 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. [2018-09-15 20:07:19,464 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:07:21,346 INFO L232 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 78.19% of their original sizes. [2018-09-15 20:07:21,346 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:07:23,907 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:07:23,908 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:07:23,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-15 20:07:23,908 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:07:23,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-15 20:07:23,910 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-15 20:07:23,910 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-15 20:07:23,911 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 14 states. [2018-09-15 20:07:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 20:07:37,862 INFO L93 Difference]: Finished difference Result 1340 states and 2335 transitions. [2018-09-15 20:07:37,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-15 20:07:37,863 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2018-09-15 20:07:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 20:07:37,874 INFO L225 Difference]: With dead ends: 1340 [2018-09-15 20:07:37,874 INFO L226 Difference]: Without dead ends: 1095 [2018-09-15 20:07:37,878 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 136 GetRequests, 91 SyntacticMatches, 20 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2018-09-15 20:07:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-09-15 20:07:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 850. [2018-09-15 20:07:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2018-09-15 20:07:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1058 transitions. [2018-09-15 20:07:37,935 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1058 transitions. Word has length 124 [2018-09-15 20:07:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 20:07:37,936 INFO L480 AbstractCegarLoop]: Abstraction has 850 states and 1058 transitions. [2018-09-15 20:07:37,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-15 20:07:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1058 transitions. [2018-09-15 20:07:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-15 20:07:37,943 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:07:37,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 20:07:37,944 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:07:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash -788501065, now seen corresponding path program 1 times [2018-09-15 20:07:37,945 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:07:37,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 151 with the following transitions: [2018-09-15 20:07:37,945 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], [213], [215], [218], [226], [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], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-15 20:07:37,951 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:07:37,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:07:47,626 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:07:47,626 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. [2018-09-15 20:07:47,638 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:07:48,920 INFO L232 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 78.03% of their original sizes. [2018-09-15 20:07:48,921 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:07:49,286 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:07:49,286 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:07:49,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-15 20:07:49,287 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:07:49,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-15 20:07:49,288 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-15 20:07:49,288 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-15 20:07:49,288 INFO L87 Difference]: Start difference. First operand 850 states and 1058 transitions. Second operand 12 states. [2018-09-15 20:07:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 20:07:55,941 INFO L93 Difference]: Finished difference Result 1283 states and 1842 transitions. [2018-09-15 20:07:55,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-15 20:07:55,945 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2018-09-15 20:07:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 20:07:55,951 INFO L225 Difference]: With dead ends: 1283 [2018-09-15 20:07:55,951 INFO L226 Difference]: Without dead ends: 1038 [2018-09-15 20:07:55,953 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 158 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2018-09-15 20:07:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-09-15 20:07:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1035. [2018-09-15 20:07:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2018-09-15 20:07:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1256 transitions. [2018-09-15 20:07:55,992 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1256 transitions. Word has length 150 [2018-09-15 20:07:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 20:07:55,992 INFO L480 AbstractCegarLoop]: Abstraction has 1035 states and 1256 transitions. [2018-09-15 20:07:55,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-15 20:07:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1256 transitions. [2018-09-15 20:07:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-09-15 20:07:56,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:07:56,003 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 20:07:56,003 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:07:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash -9295547, now seen corresponding path program 1 times [2018-09-15 20:07:56,004 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:07:56,004 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-09-15 20:07:56,004 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], [213], [215], [218], [226], [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], [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] [2018-09-15 20:07:56,009 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:07:56,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:08:21,132 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:08:21,132 INFO L272 AbstractInterpreter]: Visited 119 different actions 467 times. Merged at 7 different actions 24 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 20:08:21,138 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:08:23,631 INFO L232 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 77.81% of their original sizes. [2018-09-15 20:08:23,632 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:08:26,716 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:08:26,716 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:08:26,717 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-15 20:08:26,717 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:08:26,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-15 20:08:26,718 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-15 20:08:26,718 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-09-15 20:08:26,718 INFO L87 Difference]: Start difference. First operand 1035 states and 1256 transitions. Second operand 16 states. [2018-09-15 20:08:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 20:08:39,884 INFO L93 Difference]: Finished difference Result 2597 states and 3738 transitions. [2018-09-15 20:08:39,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-15 20:08:39,886 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 235 [2018-09-15 20:08:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 20:08:39,898 INFO L225 Difference]: With dead ends: 2597 [2018-09-15 20:08:39,899 INFO L226 Difference]: Without dead ends: 1936 [2018-09-15 20:08:39,902 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 252 GetRequests, 174 SyntacticMatches, 46 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2018-09-15 20:08:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2018-09-15 20:08:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1469. [2018-09-15 20:08:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2018-09-15 20:08:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1742 transitions. [2018-09-15 20:08:39,966 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1742 transitions. Word has length 235 [2018-09-15 20:08:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 20:08:39,966 INFO L480 AbstractCegarLoop]: Abstraction has 1469 states and 1742 transitions. [2018-09-15 20:08:39,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-15 20:08:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1742 transitions. [2018-09-15 20:08:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-09-15 20:08:39,973 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:08:39,974 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 20:08:39,974 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:08:39,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1364256258, now seen corresponding path program 1 times [2018-09-15 20:08:39,975 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:08:39,975 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-09-15 20:08:39,975 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], [213], [215], [218], [226], [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], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-15 20:08:39,988 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:08:39,988 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:08:49,653 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 20:09:05,001 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:09:05,001 INFO L272 AbstractInterpreter]: Visited 119 different actions 580 times. Merged at 7 different actions 29 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 20:09:05,008 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:09:06,941 INFO L232 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 77.76% of their original sizes. [2018-09-15 20:09:06,942 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:09:07,311 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:09:07,311 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:09:07,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 20:09:07,312 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:09:07,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 20:09:07,312 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 20:09:07,312 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-15 20:09:07,313 INFO L87 Difference]: Start difference. First operand 1469 states and 1742 transitions. Second operand 11 states. [2018-09-15 20:09:19,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 20:09:19,134 INFO L93 Difference]: Finished difference Result 2091 states and 2894 transitions. [2018-09-15 20:09:19,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-15 20:09:19,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2018-09-15 20:09:19,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 20:09:19,147 INFO L225 Difference]: With dead ends: 2091 [2018-09-15 20:09:19,147 INFO L226 Difference]: Without dead ends: 1846 [2018-09-15 20:09:19,150 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 270 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-09-15 20:09:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2018-09-15 20:09:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1839. [2018-09-15 20:09:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2018-09-15 20:09:19,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2176 transitions. [2018-09-15 20:09:19,215 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2176 transitions. Word has length 260 [2018-09-15 20:09:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 20:09:19,215 INFO L480 AbstractCegarLoop]: Abstraction has 1839 states and 2176 transitions. [2018-09-15 20:09:19,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 20:09:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2176 transitions. [2018-09-15 20:09:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-15 20:09:19,223 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:09:19,224 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-15 20:09:19,224 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:09:19,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1727944499, now seen corresponding path program 1 times [2018-09-15 20:09:19,224 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:09:19,225 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 339 with the following transitions: [2018-09-15 20:09:19,225 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], [213], [215], [218], [226], [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], [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] [2018-09-15 20:09:19,229 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:09:19,229 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:09:28,579 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 20:09:51,949 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:09:51,949 INFO L272 AbstractInterpreter]: Visited 120 different actions 827 times. Merged at 8 different actions 53 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 20:09:51,960 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:09:53,311 INFO L232 lantSequenceWeakener]: Weakened 336 states. On average, predicates are now at 77.68% of their original sizes. [2018-09-15 20:09:53,312 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:09:53,600 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:09:53,600 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:09:53,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 20:09:53,601 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:09:53,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 20:09:53,601 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 20:09:53,601 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-15 20:09:53,602 INFO L87 Difference]: Start difference. First operand 1839 states and 2176 transitions. Second operand 10 states. [2018-09-15 20:09:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 20:09:59,810 INFO L93 Difference]: Finished difference Result 2866 states and 3655 transitions. [2018-09-15 20:09:59,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-15 20:09:59,812 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 338 [2018-09-15 20:09:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 20:09:59,822 INFO L225 Difference]: With dead ends: 2866 [2018-09-15 20:09:59,822 INFO L226 Difference]: Without dead ends: 2251 [2018-09-15 20:09:59,825 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 345 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 20:09:59,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2018-09-15 20:09:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2235. [2018-09-15 20:09:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2235 states. [2018-09-15 20:09:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 2656 transitions. [2018-09-15 20:09:59,904 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 2656 transitions. Word has length 338 [2018-09-15 20:09:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 20:09:59,905 INFO L480 AbstractCegarLoop]: Abstraction has 2235 states and 2656 transitions. [2018-09-15 20:09:59,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 20:09:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 2656 transitions. [2018-09-15 20:09:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-15 20:09:59,914 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:09:59,914 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-15 20:09:59,915 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:09:59,915 INFO L82 PathProgramCache]: Analyzing trace with hash 184345782, now seen corresponding path program 1 times [2018-09-15 20:09:59,915 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:09:59,915 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-09-15 20:09:59,916 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], [213], [215], [218], [226], [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], [626], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-15 20:09:59,919 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:09:59,919 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:10:09,742 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 20:10:33,563 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:10:33,563 INFO L272 AbstractInterpreter]: Visited 120 different actions 829 times. Merged at 8 different actions 55 times. Widened at 1 different actions 2 times. Found 12 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 20:10:33,570 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:10:35,607 INFO L232 lantSequenceWeakener]: Weakened 361 states. On average, predicates are now at 77.65% of their original sizes. [2018-09-15 20:10:35,607 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:10:35,858 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:10:35,858 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:10:35,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 20:10:35,859 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:10:35,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 20:10:35,859 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 20:10:35,859 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-15 20:10:35,859 INFO L87 Difference]: Start difference. First operand 2235 states and 2656 transitions. Second operand 10 states. [2018-09-15 20:10:42,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 20:10:42,048 INFO L93 Difference]: Finished difference Result 3476 states and 4405 transitions. [2018-09-15 20:10:42,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-15 20:10:42,048 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 363 [2018-09-15 20:10:42,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 20:10:42,059 INFO L225 Difference]: With dead ends: 3476 [2018-09-15 20:10:42,059 INFO L226 Difference]: Without dead ends: 2467 [2018-09-15 20:10:42,062 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 370 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 20:10:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2018-09-15 20:10:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2446. [2018-09-15 20:10:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2018-09-15 20:10:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 2920 transitions. [2018-09-15 20:10:42,148 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 2920 transitions. Word has length 363 [2018-09-15 20:10:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 20:10:42,149 INFO L480 AbstractCegarLoop]: Abstraction has 2446 states and 2920 transitions. [2018-09-15 20:10:42,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 20:10:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 2920 transitions. [2018-09-15 20:10:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-15 20:10:42,155 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 20:10:42,155 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 20:10:42,156 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 20:10:42,156 INFO L82 PathProgramCache]: Analyzing trace with hash -468435043, now seen corresponding path program 1 times [2018-09-15 20:10:42,156 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 20:10:42,156 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 379 with the following transitions: [2018-09-15 20:10:42,157 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], [213], [215], [218], [226], [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], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-15 20:10:42,160 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 20:10:42,160 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 20:10:52,380 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 20:11:15,650 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 20:11:15,650 INFO L272 AbstractInterpreter]: Visited 127 different actions 877 times. Merged at 8 different actions 54 times. Widened at 1 different actions 2 times. Found 12 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 20:11:15,658 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 20:11:17,200 INFO L232 lantSequenceWeakener]: Weakened 376 states. On average, predicates are now at 77.64% of their original sizes. [2018-09-15 20:11:17,201 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 20:11:17,447 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 20:11:17,447 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 20:11:17,447 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 20:11:17,447 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 20:11:17,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 20:11:17,448 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 20:11:17,448 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-15 20:11:17,449 INFO L87 Difference]: Start difference. First operand 2446 states and 2920 transitions. Second operand 10 states. Received shutdown request... [2018-09-15 20:11:21,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-15 20:11:21,927 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-15 20:11:21,933 WARN L206 ceAbstractionStarter]: Timeout [2018-09-15 20:11:21,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:11:21 BoogieIcfgContainer [2018-09-15 20:11:21,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 20:11:21,934 INFO L168 Benchmark]: Toolchain (without parser) took 262301.52 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-15 20:11:21,936 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-09-15 20:11:21,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.19 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. [2018-09-15 20:11:21,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.63 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. [2018-09-15 20:11:21,938 INFO L168 Benchmark]: Boogie Preprocessor took 291.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -904.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2018-09-15 20:11:21,939 INFO L168 Benchmark]: RCFGBuilder took 3740.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. [2018-09-15 20:11:21,940 INFO L168 Benchmark]: TraceAbstraction took 257355.35 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-09-15 20:11:21,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 797.19 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 111.63 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 291.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -904.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3740.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 120.6 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257355.35 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was constructing difference of abstraction (2446states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (2794 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 257.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 66.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1781 SDtfs, 11634 SDslu, 1881 SDs, 0 SdLazy, 14818 SolverSat, 2907 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.7s Time, PredicateUnifierStatistics: 16 DeclaredPredicates, 1954 GetRequests, 1740 SyntacticMatches, 66 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2446occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 169.6s AbstIntTime, 8 AbstIntIterations, 8 AbstIntStrong, 0.9951108254958586 AbsIntWeakeningRatio, 0.10750399148483236 AbsIntAvgWeakeningVarsNumRemoved, 540.2400212879191 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 761 StatesRemovedByMinimization, 7 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_label23_true-unreach-call_false-termination.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_20-11-21-958.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label23_true-unreach-call_false-termination.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_20-11-21-958.csv Completed graceful shutdown