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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 22:53:36,807 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 22:53:36,811 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 22:53:36,832 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 22:53:36,833 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 22:53:36,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 22:53:36,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 22:53:36,838 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 22:53:36,840 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 22:53:36,841 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 22:53:36,850 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 22:53:36,850 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 22:53:36,855 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 22:53:36,856 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 22:53:36,857 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 22:53:36,860 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 22:53:36,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 22:53:36,866 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 22:53:36,868 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 22:53:36,869 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 22:53:36,870 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 22:53:36,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 22:53:36,874 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 22:53:36,874 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 22:53:36,874 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 22:53:36,877 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 22:53:36,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 22:53:36,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 22:53:36,882 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 22:53:36,883 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 22:53:36,883 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 22:53:36,884 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 22:53:36,890 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-15 22:53:36,921 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 22:53:36,921 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 22:53:36,922 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 22:53:36,922 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 22:53:36,922 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 22:53:36,923 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 22:53:36,923 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 22:53:36,923 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 22:53:36,923 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 22:53:36,927 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 22:53:36,928 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 22:53:36,929 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 22:53:36,929 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 22:53:36,929 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 22:53:36,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 22:53:36,931 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 22:53:36,932 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 22:53:36,932 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 22:53:36,932 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 22:53:36,932 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 22:53:36,933 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 22:53:36,933 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 22:53:36,933 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 22:53:36,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 22:53:36,934 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 22:53:36,935 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 22:53:36,935 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 22:53:36,935 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 22:53:36,935 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 22:53:36,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 22:53:36,936 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 22:53:36,936 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 22:53:36,937 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 22:53:37,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 22:53:37,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 22:53:37,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 22:53:37,031 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 22:53:37,032 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 22:53:37,033 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label35_true-unreach-call_false-termination.c [2018-09-15 22:53:37,388 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2099f41/015147728f564d2bb6f3e8fb15e8a24b/FLAGefe83cb33 [2018-09-15 22:53:37,718 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 22:53:37,719 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label35_true-unreach-call_false-termination.c [2018-09-15 22:53:37,750 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2099f41/015147728f564d2bb6f3e8fb15e8a24b/FLAGefe83cb33 [2018-09-15 22:53:37,768 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2099f41/015147728f564d2bb6f3e8fb15e8a24b [2018-09-15 22:53:37,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 22:53:37,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 22:53:37,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 22:53:37,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 22:53:37,790 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 22:53:37,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 10:53:37" (1/1) ... [2018-09-15 22:53:37,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f1297b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:37, skipping insertion in model container [2018-09-15 22:53:37,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 10:53:37" (1/1) ... [2018-09-15 22:53:37,806 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 22:53:38,394 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 22:53:38,412 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 22:53:38,571 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 22:53:38,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38 WrapperNode [2018-09-15 22:53:38,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 22:53:38,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 22:53:38,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 22:53:38,631 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 22:53:38,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:38,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:38,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 22:53:38,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 22:53:38,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 22:53:38,762 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 22:53:38,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:38,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:38,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:38,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:38,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:39,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:39,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (1/1) ... [2018-09-15 22:53:39,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 22:53:39,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 22:53:39,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 22:53:39,046 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 22:53:39,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (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 22:53:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 22:53:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 22:53:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 22:53:39,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 22:53:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 22:53:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 22:53:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 22:53:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 22:53:42,830 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 22:53:42,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 10:53:42 BoogieIcfgContainer [2018-09-15 22:53:42,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 22:53:42,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 22:53:42,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 22:53:42,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 22:53:42,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 10:53:37" (1/3) ... [2018-09-15 22:53:42,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f316753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 10:53:42, skipping insertion in model container [2018-09-15 22:53:42,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:53:38" (2/3) ... [2018-09-15 22:53:42,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f316753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 10:53:42, skipping insertion in model container [2018-09-15 22:53:42,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 10:53:42" (3/3) ... [2018-09-15 22:53:42,839 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label35_true-unreach-call_false-termination.c [2018-09-15 22:53:42,850 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 22:53:42,860 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 22:53:42,917 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 22:53:42,918 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 22:53:42,918 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 22:53:42,918 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 22:53:42,918 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 22:53:42,919 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 22:53:42,919 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 22:53:42,919 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 22:53:42,919 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 22:53:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-15 22:53:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-15 22:53:42,957 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 22:53:42,959 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] [2018-09-15 22:53:42,960 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 22:53:42,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1354221791, now seen corresponding path program 1 times [2018-09-15 22:53:42,969 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 22:53:42,970 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-09-15 22:53:42,973 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], [309], [311], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-15 22:53:43,019 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 22:53:43,019 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 22:53:44,433 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 22:53:44,435 INFO L272 AbstractInterpreter]: Visited 50 different actions 50 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 22:53:44,494 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 22:53:45,261 INFO L232 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 80.07% of their original sizes. [2018-09-15 22:53:45,261 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 22:53:45,486 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 22:53:45,490 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 22:53:45,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 22:53:45,491 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 22:53:45,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 22:53:45,508 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 22:53:45,508 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 22:53:45,512 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-15 22:53:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 22:53:48,571 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-15 22:53:48,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 22:53:48,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2018-09-15 22:53:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 22:53:48,597 INFO L225 Difference]: With dead ends: 693 [2018-09-15 22:53:48,597 INFO L226 Difference]: Without dead ends: 436 [2018-09-15 22:53:48,606 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 50 GetRequests, 46 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 22:53:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-15 22:53:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-15 22:53:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-15 22:53:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-15 22:53:48,689 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 51 [2018-09-15 22:53:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 22:53:48,690 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-15 22:53:48,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 22:53:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-15 22:53:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-15 22:53:48,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 22:53:48,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:48,706 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 22:53:48,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1438150893, now seen corresponding path program 1 times [2018-09-15 22:53:48,706 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 22:53:48,707 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-09-15 22:53:48,707 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], [309], [311], [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 22:53:48,718 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 22:53:48,719 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 22:53:56,514 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 22:53:56,514 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 22:53:56,555 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 22:54:01,280 INFO L232 lantSequenceWeakener]: Weakened 133 states. On average, predicates are now at 78.38% of their original sizes. [2018-09-15 22:54:01,281 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 22:54:01,422 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 22:54:01,422 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 22:54:01,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 22:54:01,423 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 22:54:01,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 22:54:01,424 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 22:54:01,424 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-15 22:54:01,425 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 11 states. [2018-09-15 22:54:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 22:54:05,401 INFO L93 Difference]: Finished difference Result 1051 states and 1763 transitions. [2018-09-15 22:54:05,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-15 22:54:05,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2018-09-15 22:54:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 22:54:05,410 INFO L225 Difference]: With dead ends: 1051 [2018-09-15 22:54:05,410 INFO L226 Difference]: Without dead ends: 806 [2018-09-15 22:54:05,413 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 22:54:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-09-15 22:54:05,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 803. [2018-09-15 22:54:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-09-15 22:54:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1002 transitions. [2018-09-15 22:54:05,470 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1002 transitions. Word has length 136 [2018-09-15 22:54:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 22:54:05,471 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 1002 transitions. [2018-09-15 22:54:05,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 22:54:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1002 transitions. [2018-09-15 22:54:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-15 22:54:05,477 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 22:54:05,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:05,478 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 22:54:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash -936361497, now seen corresponding path program 1 times [2018-09-15 22:54:05,478 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 22:54:05,479 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 163 with the following transitions: [2018-09-15 22:54:05,480 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], [309], [311], [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 22:54:05,489 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 22:54:05,490 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 22:54:33,566 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 22:54:33,567 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 22:54:33,574 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 22:54:54,288 INFO L232 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 78.2% of their original sizes. [2018-09-15 22:54:54,289 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 22:54:54,460 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 22:54:54,460 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 22:54:54,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 22:54:54,461 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 22:54:54,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 22:54:54,462 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 22:54:54,462 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-15 22:54:54,463 INFO L87 Difference]: Start difference. First operand 803 states and 1002 transitions. Second operand 11 states. [2018-09-15 22:54:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 22:54:57,346 INFO L93 Difference]: Finished difference Result 1236 states and 1786 transitions. [2018-09-15 22:54:57,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 22:54:57,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2018-09-15 22:54:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 22:54:57,358 INFO L225 Difference]: With dead ends: 1236 [2018-09-15 22:54:57,358 INFO L226 Difference]: Without dead ends: 991 [2018-09-15 22:54:57,360 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-09-15 22:54:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2018-09-15 22:54:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 988. [2018-09-15 22:54:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-09-15 22:54:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1200 transitions. [2018-09-15 22:54:57,392 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1200 transitions. Word has length 162 [2018-09-15 22:54:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 22:54:57,393 INFO L480 AbstractCegarLoop]: Abstraction has 988 states and 1200 transitions. [2018-09-15 22:54:57,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 22:54:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1200 transitions. [2018-09-15 22:54:57,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-09-15 22:54:57,401 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 22:54:57,402 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:54:57,402 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 22:54:57,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1391747147, now seen corresponding path program 1 times [2018-09-15 22:54:57,402 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 22:54:57,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-09-15 22:54:57,403 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], [309], [311], [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 22:54:57,407 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 22:54:57,407 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 22:56:26,231 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 22:56:26,231 INFO L272 AbstractInterpreter]: Visited 119 different actions 466 times. Merged at 7 different actions 23 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-15 22:56:26,269 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown