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/Problem17_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 23:19:37,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 23:19:37,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 23:19:37,747 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 23:19:37,747 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 23:19:37,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 23:19:37,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 23:19:37,752 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 23:19:37,756 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 23:19:37,757 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 23:19:37,759 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 23:19:37,759 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 23:19:37,760 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 23:19:37,762 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 23:19:37,763 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 23:19:37,770 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 23:19:37,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 23:19:37,778 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 23:19:37,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 23:19:37,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 23:19:37,785 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 23:19:37,786 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 23:19:37,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 23:19:37,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 23:19:37,790 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 23:19:37,791 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 23:19:37,792 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 23:19:37,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 23:19:37,795 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 23:19:37,797 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 23:19:37,797 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 23:19:37,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 23:19:37,803 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 23:19:37,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 23:19:37,833 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 23:19:37,834 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 23:19:37,834 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 23:19:37,837 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 23:19:37,838 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 23:19:37,838 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 23:19:37,838 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 23:19:37,838 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 23:19:37,838 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 23:19:37,839 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 23:19:37,840 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 23:19:37,840 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 23:19:37,840 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 23:19:37,840 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 23:19:37,841 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 23:19:37,841 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 23:19:37,841 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 23:19:37,842 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 23:19:37,842 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 23:19:37,842 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 23:19:37,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 23:19:37,845 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 23:19:37,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 23:19:37,845 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 23:19:37,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 23:19:37,846 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 23:19:37,846 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 23:19:37,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 23:19:37,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 23:19:37,846 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 23:19:37,847 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 23:19:37,847 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 23:19:37,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 23:19:37,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 23:19:37,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 23:19:37,935 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 23:19:37,935 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 23:19:37,936 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-09-15 23:19:38,276 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbcf49d5/558fdd1ca37d41cb9a3829676a249ff3/FLAG55f74bccc [2018-09-15 23:19:38,700 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 23:19:38,701 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-09-15 23:19:38,730 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbcf49d5/558fdd1ca37d41cb9a3829676a249ff3/FLAG55f74bccc [2018-09-15 23:19:38,747 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cbcf49d5/558fdd1ca37d41cb9a3829676a249ff3 [2018-09-15 23:19:38,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 23:19:38,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 23:19:38,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 23:19:38,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 23:19:38,771 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 23:19:38,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:19:38" (1/1) ... [2018-09-15 23:19:38,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2872e34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:38, skipping insertion in model container [2018-09-15 23:19:38,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:19:38" (1/1) ... [2018-09-15 23:19:38,789 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 23:19:39,762 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 23:19:39,781 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 23:19:40,514 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 23:19:40,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40 WrapperNode [2018-09-15 23:19:40,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 23:19:40,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 23:19:40,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 23:19:40,711 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 23:19:40,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:40,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:41,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 23:19:41,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 23:19:41,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 23:19:41,653 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 23:19:41,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:41,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:41,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:41,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:41,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:41,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:41,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (1/1) ... [2018-09-15 23:19:42,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 23:19:42,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 23:19:42,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 23:19:42,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 23:19:42,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (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 23:19:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 23:19:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 23:19:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 23:19:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 23:19:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 23:19:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 23:19:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 23:19:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 23:19:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 23:19:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 23:19:53,546 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 23:19:53,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:19:53 BoogieIcfgContainer [2018-09-15 23:19:53,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 23:19:53,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 23:19:53,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 23:19:53,554 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 23:19:53,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:19:38" (1/3) ... [2018-09-15 23:19:53,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10201d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:19:53, skipping insertion in model container [2018-09-15 23:19:53,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:19:40" (2/3) ... [2018-09-15 23:19:53,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10201d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:19:53, skipping insertion in model container [2018-09-15 23:19:53,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:19:53" (3/3) ... [2018-09-15 23:19:53,559 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06_true-unreach-call.c [2018-09-15 23:19:53,571 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 23:19:53,582 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 23:19:53,645 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 23:19:53,646 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 23:19:53,646 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 23:19:53,646 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 23:19:53,646 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 23:19:53,646 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 23:19:53,647 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 23:19:53,647 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 23:19:53,647 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 23:19:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-15 23:19:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-15 23:19:53,704 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 23:19:53,706 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] [2018-09-15 23:19:53,707 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 23:19:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2116554596, now seen corresponding path program 1 times [2018-09-15 23:19:53,716 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 23:19:53,717 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-09-15 23:19:53,720 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [2283], [2287], [2293], [2297], [2306], [2307], [2308], [2310] [2018-09-15 23:19:53,773 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 23:19:53,774 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 23:19:55,004 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 23:19:55,007 INFO L272 AbstractInterpreter]: Visited 37 different actions 37 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-15 23:19:55,072 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 23:19:55,674 INFO L232 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 76.56% of their original sizes. [2018-09-15 23:19:55,675 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 23:19:55,886 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 23:19:55,888 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 23:19:55,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 23:19:55,888 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 23:19:55,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 23:19:55,905 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 23:19:55,906 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 23:19:55,909 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 6 states. [2018-09-15 23:20:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 23:20:07,198 INFO L93 Difference]: Finished difference Result 1642 states and 3016 transitions. [2018-09-15 23:20:07,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 23:20:07,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-09-15 23:20:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 23:20:07,228 INFO L225 Difference]: With dead ends: 1642 [2018-09-15 23:20:07,228 INFO L226 Difference]: Without dead ends: 1036 [2018-09-15 23:20:07,238 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 37 GetRequests, 33 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 23:20:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2018-09-15 23:20:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1034. [2018-09-15 23:20:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-09-15 23:20:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1511 transitions. [2018-09-15 23:20:07,352 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1511 transitions. Word has length 38 [2018-09-15 23:20:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 23:20:07,353 INFO L480 AbstractCegarLoop]: Abstraction has 1034 states and 1511 transitions. [2018-09-15 23:20:07,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 23:20:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1511 transitions. [2018-09-15 23:20:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-15 23:20:07,359 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 23:20:07,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:07,360 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 23:20:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash -493194566, now seen corresponding path program 1 times [2018-09-15 23:20:07,360 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 23:20:07,361 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-09-15 23:20:07,361 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-09-15 23:20:07,370 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 23:20:07,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 23:20:14,904 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 23:20:22,481 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 23:20:22,482 INFO L272 AbstractInterpreter]: Visited 82 different actions 157 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-15 23:20:22,487 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 23:20:29,713 INFO L232 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 75.61% of their original sizes. [2018-09-15 23:20:29,713 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 23:20:29,918 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 23:20:29,918 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 23:20:29,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 23:20:29,919 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 23:20:29,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 23:20:29,921 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 23:20:29,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-15 23:20:29,921 INFO L87 Difference]: Start difference. First operand 1034 states and 1511 transitions. Second operand 11 states. [2018-09-15 23:20:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 23:20:41,647 INFO L93 Difference]: Finished difference Result 2502 states and 4301 transitions. [2018-09-15 23:20:41,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 23:20:41,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2018-09-15 23:20:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 23:20:41,663 INFO L225 Difference]: With dead ends: 2502 [2018-09-15 23:20:41,663 INFO L226 Difference]: Without dead ends: 1908 [2018-09-15 23:20:41,668 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 119 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 23:20:41,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2018-09-15 23:20:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1905. [2018-09-15 23:20:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2018-09-15 23:20:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2402 transitions. [2018-09-15 23:20:41,732 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2402 transitions. Word has length 113 [2018-09-15 23:20:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 23:20:41,733 INFO L480 AbstractCegarLoop]: Abstraction has 1905 states and 2402 transitions. [2018-09-15 23:20:41,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 23:20:41,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2402 transitions. [2018-09-15 23:20:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-15 23:20:41,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 23:20:41,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:41,738 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 23:20:41,738 INFO L82 PathProgramCache]: Analyzing trace with hash -649908078, now seen corresponding path program 1 times [2018-09-15 23:20:41,739 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 23:20:41,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2018-09-15 23:20:41,739 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-09-15 23:20:41,744 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 23:20:41,744 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 23:20:46,159 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 23:20:55,749 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 23:20:55,750 INFO L272 AbstractInterpreter]: Visited 95 different actions 184 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-15 23:20:55,755 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 23:21:06,140 INFO L232 lantSequenceWeakener]: Weakened 123 states. On average, predicates are now at 75.54% of their original sizes. [2018-09-15 23:21:06,141 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 23:21:06,322 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 23:21:06,322 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 23:21:06,323 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 23:21:06,323 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 23:21:06,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 23:21:06,324 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 23:21:06,324 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-15 23:21:06,324 INFO L87 Difference]: Start difference. First operand 1905 states and 2402 transitions. Second operand 11 states. [2018-09-15 23:21:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 23:21:15,191 INFO L93 Difference]: Finished difference Result 2938 states and 4330 transitions. [2018-09-15 23:21:15,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-15 23:21:15,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 126 [2018-09-15 23:21:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 23:21:15,212 INFO L225 Difference]: With dead ends: 2938 [2018-09-15 23:21:15,212 INFO L226 Difference]: Without dead ends: 2344 [2018-09-15 23:21:15,216 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2018-09-15 23:21:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2018-09-15 23:21:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2341. [2018-09-15 23:21:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2341 states. [2018-09-15 23:21:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 2853 transitions. [2018-09-15 23:21:15,276 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 2853 transitions. Word has length 126 [2018-09-15 23:21:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 23:21:15,277 INFO L480 AbstractCegarLoop]: Abstraction has 2341 states and 2853 transitions. [2018-09-15 23:21:15,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 23:21:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 2853 transitions. [2018-09-15 23:21:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-09-15 23:21:15,284 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 23:21:15,284 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 23:21:15,285 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 23:21:15,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1098957288, now seen corresponding path program 1 times [2018-09-15 23:21:15,285 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 23:21:15,285 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2018-09-15 23:21:15,286 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-09-15 23:21:15,290 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 23:21:15,290 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 23:21:20,865 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 23:21:55,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 23:21:55,684 INFO L272 AbstractInterpreter]: Visited 96 different actions 465 times. Merged at 7 different actions 29 times. Never widened. Found 6 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-15 23:21:55,689 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 23:22:05,947 INFO L232 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 75.39% of their original sizes. [2018-09-15 23:22:05,948 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 23:22:06,261 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 23:22:06,262 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 23:22:06,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-15 23:22:06,263 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 23:22:06,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-15 23:22:06,264 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-15 23:22:06,265 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-15 23:22:06,265 INFO L87 Difference]: Start difference. First operand 2341 states and 2853 transitions. Second operand 13 states. [2018-09-15 23:22:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 23:22:22,183 INFO L93 Difference]: Finished difference Result 3487 states and 4982 transitions. [2018-09-15 23:22:22,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-15 23:22:22,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 201 [2018-09-15 23:22:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 23:22:22,204 INFO L225 Difference]: With dead ends: 3487 [2018-09-15 23:22:22,204 INFO L226 Difference]: Without dead ends: 2893 [2018-09-15 23:22:22,208 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 212 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2018-09-15 23:22:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2018-09-15 23:22:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2888. [2018-09-15 23:22:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2888 states. [2018-09-15 23:22:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 3487 transitions. [2018-09-15 23:22:22,286 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 3487 transitions. Word has length 201 [2018-09-15 23:22:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 23:22:22,286 INFO L480 AbstractCegarLoop]: Abstraction has 2888 states and 3487 transitions. [2018-09-15 23:22:22,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-15 23:22:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 3487 transitions. [2018-09-15 23:22:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-15 23:22:22,291 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 23:22:22,291 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:22:22,292 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 23:22:22,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1701531629, now seen corresponding path program 1 times [2018-09-15 23:22:22,292 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 23:22:22,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-09-15 23:22:22,293 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-09-15 23:22:22,296 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 23:22:22,297 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 23:22:26,253 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 23:23:33,302 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 23:23:33,302 INFO L272 AbstractInterpreter]: Visited 96 different actions 280 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-09-15 23:23:33,310 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown