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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:27:54,887 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:27:54,890 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:27:54,909 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:27:54,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:27:54,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:27:54,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:27:54,915 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:27:54,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:27:54,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:27:54,920 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:27:54,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:27:54,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:27:54,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:27:54,926 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:27:54,927 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:27:54,928 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:27:54,938 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:27:54,942 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:27:54,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:27:54,949 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:27:54,950 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:27:54,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 15:27:54,959 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 15:27:54,959 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 15:27:54,960 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 15:27:54,961 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 15:27:54,964 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 15:27:54,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 15:27:54,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 15:27:54,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 15:27:54,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 15:27:54,969 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 15:27:54,969 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 15:27:54,970 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 15:27:54,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 15:27:54,971 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 15:27:55,000 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:27:55,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:27:55,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:27:55,002 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:27:55,002 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:27:55,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:27:55,003 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 15:27:55,003 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:27:55,003 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:27:55,003 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 15:27:55,004 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:27:55,004 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:27:55,005 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:27:55,005 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:27:55,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:27:55,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:27:55,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:27:55,006 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:27:55,006 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:27:55,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:27:55,006 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:27:55,006 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:27:55,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:27:55,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:27:55,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:27:55,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:27:55,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:27:55,009 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:27:55,009 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:27:55,010 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:27:55,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:27:55,010 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:27:55,010 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:27:55,010 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:27:55,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:27:55,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:27:55,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:27:55,101 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:27:55,101 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:27:55,102 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c [2018-09-15 15:27:55,463 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2dc85b3/f42a3812d28e4c62bd5c4e5e329b480a/FLAG5dd90bb9e [2018-09-15 15:27:55,865 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:27:55,866 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c [2018-09-15 15:27:55,904 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2dc85b3/f42a3812d28e4c62bd5c4e5e329b480a/FLAG5dd90bb9e [2018-09-15 15:27:55,930 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2dc85b3/f42a3812d28e4c62bd5c4e5e329b480a [2018-09-15 15:27:55,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:27:55,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:27:55,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:27:55,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:27:55,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:27:55,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:27:55" (1/1) ... [2018-09-15 15:27:55,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4c6457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:55, skipping insertion in model container [2018-09-15 15:27:55,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:27:55" (1/1) ... [2018-09-15 15:27:55,985 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:27:56,982 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:27:57,001 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:27:57,382 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:27:57,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57 WrapperNode [2018-09-15 15:27:57,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:27:57,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:27:57,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:27:57,624 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:27:57,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:57,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:57,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:27:57,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:27:57,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:27:57,895 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:27:58,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:58,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:58,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:58,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:58,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:58,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:58,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (1/1) ... [2018-09-15 15:27:58,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:27:58,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:27:58,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:27:58,776 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:27:58,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (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 15:27:58,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:27:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:27:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 15:27:58,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 15:27:58,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 15:27:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 15:27:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:27:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:27:58,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:27:58,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:28:10,600 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:28:10,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:28:10 BoogieIcfgContainer [2018-09-15 15:28:10,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:28:10,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:28:10,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:28:10,609 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:28:10,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:27:55" (1/3) ... [2018-09-15 15:28:10,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0c9df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:28:10, skipping insertion in model container [2018-09-15 15:28:10,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:27:57" (2/3) ... [2018-09-15 15:28:10,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0c9df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:28:10, skipping insertion in model container [2018-09-15 15:28:10,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:28:10" (3/3) ... [2018-09-15 15:28:10,615 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label41_true-unreach-call.c [2018-09-15 15:28:10,627 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:28:10,643 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:28:10,721 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:28:10,722 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:28:10,722 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:28:10,722 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:28:10,722 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:28:10,722 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:28:10,723 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:28:10,723 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:28:10,723 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:28:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-15 15:28:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-15 15:28:10,766 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:28:10,767 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:28:10,769 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:28:10,775 INFO L82 PathProgramCache]: Analyzing trace with hash -131983554, now seen corresponding path program 1 times [2018-09-15 15:28:10,777 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:28:10,778 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-09-15 15:28:10,781 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], [918], [926], [934], [938], [940], [2283], [2287], [2293], [2297], [2306], [2307], [2308], [2310] [2018-09-15 15:28:10,821 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:28:10,821 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:28:12,012 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:28:12,014 INFO L272 AbstractInterpreter]: Visited 40 different actions 40 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-15 15:28:12,068 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:28:12,878 INFO L232 lantSequenceWeakener]: Weakened 38 states. On average, predicates are now at 76.77% of their original sizes. [2018-09-15 15:28:12,878 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:28:13,117 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:28:13,118 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:28:13,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 15:28:13,121 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:28:13,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 15:28:13,133 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 15:28:13,134 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:28:13,137 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 6 states. [2018-09-15 15:28:20,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:28:20,761 INFO L93 Difference]: Finished difference Result 1642 states and 3016 transitions. [2018-09-15 15:28:20,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 15:28:20,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2018-09-15 15:28:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:28:20,792 INFO L225 Difference]: With dead ends: 1642 [2018-09-15 15:28:20,792 INFO L226 Difference]: Without dead ends: 1036 [2018-09-15 15:28:20,804 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:28:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2018-09-15 15:28:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1034. [2018-09-15 15:28:20,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-09-15 15:28:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1511 transitions. [2018-09-15 15:28:20,922 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1511 transitions. Word has length 41 [2018-09-15 15:28:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:28:20,922 INFO L480 AbstractCegarLoop]: Abstraction has 1034 states and 1511 transitions. [2018-09-15 15:28:20,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 15:28:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1511 transitions. [2018-09-15 15:28:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-15 15:28:20,929 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:28:20,930 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:28:20,930 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:28:20,931 INFO L82 PathProgramCache]: Analyzing trace with hash 360338025, now seen corresponding path program 1 times [2018-09-15 15:28:20,931 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:28:20,931 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 117 with the following transitions: [2018-09-15 15:28:20,932 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], [918], [926], [934], [938], [940], [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 15:28:20,938 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:28:20,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:28:23,205 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:28:25,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:28:25,542 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 15:28:25,572 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:28:28,203 INFO L232 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 75.7% of their original sizes. [2018-09-15 15:28:28,204 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:28:28,591 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:28:28,591 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:28:28,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 15:28:28,592 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:28:28,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 15:28:28,593 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 15:28:28,593 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-15 15:28:28,594 INFO L87 Difference]: Start difference. First operand 1034 states and 1511 transitions. Second operand 11 states. [2018-09-15 15:28:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:28:40,375 INFO L93 Difference]: Finished difference Result 2502 states and 4301 transitions. [2018-09-15 15:28:40,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 15:28:40,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2018-09-15 15:28:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:28:40,393 INFO L225 Difference]: With dead ends: 2502 [2018-09-15 15:28:40,394 INFO L226 Difference]: Without dead ends: 1908 [2018-09-15 15:28:40,399 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 15:28:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2018-09-15 15:28:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1905. [2018-09-15 15:28:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2018-09-15 15:28:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2402 transitions. [2018-09-15 15:28:40,481 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2402 transitions. Word has length 116 [2018-09-15 15:28:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:28:40,482 INFO L480 AbstractCegarLoop]: Abstraction has 1905 states and 2402 transitions. [2018-09-15 15:28:40,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 15:28:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2402 transitions. [2018-09-15 15:28:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-15 15:28:40,497 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:28:40,498 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:28:40,498 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:28:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1732233903, now seen corresponding path program 1 times [2018-09-15 15:28:40,498 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:28:40,499 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 130 with the following transitions: [2018-09-15 15:28:40,499 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], [918], [926], [934], [938], [940], [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 15:28:40,509 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:28:40,510 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:28:43,868 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:28:51,963 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:28:51,964 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 15:28:51,971 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:29:00,595 INFO L232 lantSequenceWeakener]: Weakened 126 states. On average, predicates are now at 75.63% of their original sizes. [2018-09-15 15:29:00,595 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:29:00,723 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:29:00,723 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:29:00,723 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 15:29:00,723 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:29:00,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 15:29:00,724 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 15:29:00,725 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-15 15:29:00,725 INFO L87 Difference]: Start difference. First operand 1905 states and 2402 transitions. Second operand 11 states. [2018-09-15 15:29:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:29:12,088 INFO L93 Difference]: Finished difference Result 2938 states and 4330 transitions. [2018-09-15 15:29:12,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-15 15:29:12,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 129 [2018-09-15 15:29:12,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:29:12,110 INFO L225 Difference]: With dead ends: 2938 [2018-09-15 15:29:12,110 INFO L226 Difference]: Without dead ends: 2344 [2018-09-15 15:29:12,114 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 136 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2018-09-15 15:29:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2018-09-15 15:29:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2341. [2018-09-15 15:29:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2341 states. [2018-09-15 15:29:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 2853 transitions. [2018-09-15 15:29:12,178 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 2853 transitions. Word has length 129 [2018-09-15 15:29:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:29:12,179 INFO L480 AbstractCegarLoop]: Abstraction has 2341 states and 2853 transitions. [2018-09-15 15:29:12,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 15:29:12,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 2853 transitions. [2018-09-15 15:29:12,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-15 15:29:12,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:29:12,194 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:29:12,194 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:29:12,195 INFO L82 PathProgramCache]: Analyzing trace with hash 726473946, now seen corresponding path program 1 times [2018-09-15 15:29:12,195 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:29:12,195 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 205 with the following transitions: [2018-09-15 15:29:12,197 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], [918], [926], [934], [938], [940], [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 15:29:12,202 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:29:12,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:29:13,412 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:29:41,367 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:29:41,367 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 15:29:41,373 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:29:50,893 INFO L232 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 75.45% of their original sizes. [2018-09-15 15:29:50,894 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:29:51,163 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:29:51,163 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:29:51,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-15 15:29:51,163 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:29:51,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-15 15:29:51,164 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-15 15:29:51,164 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-15 15:29:51,165 INFO L87 Difference]: Start difference. First operand 2341 states and 2853 transitions. Second operand 13 states. [2018-09-15 15:30:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:30:04,866 INFO L93 Difference]: Finished difference Result 3487 states and 4982 transitions. [2018-09-15 15:30:04,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-15 15:30:04,867 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 204 [2018-09-15 15:30:04,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:30:04,882 INFO L225 Difference]: With dead ends: 3487 [2018-09-15 15:30:04,883 INFO L226 Difference]: Without dead ends: 2893 [2018-09-15 15:30:04,886 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 192 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 15:30:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2018-09-15 15:30:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2888. [2018-09-15 15:30:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2888 states. [2018-09-15 15:30:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 3487 transitions. [2018-09-15 15:30:04,965 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 3487 transitions. Word has length 204 [2018-09-15 15:30:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:30:04,966 INFO L480 AbstractCegarLoop]: Abstraction has 2888 states and 3487 transitions. [2018-09-15 15:30:04,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-15 15:30:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 3487 transitions. [2018-09-15 15:30:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-15 15:30:04,971 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:30:04,972 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:30:04,972 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:30:04,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1964458857, now seen corresponding path program 1 times [2018-09-15 15:30:04,972 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:30:04,973 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-09-15 15:30:04,973 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], [918], [926], [934], [938], [940], [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 15:30:04,977 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:30:04,977 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:30:07,960 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:31:09,537 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:31:09,537 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 15:31:09,580 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:31:31,969 INFO L232 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 75.42% of their original sizes. [2018-09-15 15:31:31,970 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:31:32,139 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:31:32,139 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:31:32,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-15 15:31:32,140 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:31:32,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-15 15:31:32,140 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-15 15:31:32,140 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-15 15:31:32,141 INFO L87 Difference]: Start difference. First operand 2888 states and 3487 transitions. Second operand 10 states. [2018-09-15 15:31:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:31:43,318 INFO L93 Difference]: Finished difference Result 3924 states and 5421 transitions. [2018-09-15 15:31:43,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 15:31:43,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 216 [2018-09-15 15:31:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:31:43,342 INFO L225 Difference]: With dead ends: 3924 [2018-09-15 15:31:43,342 INFO L226 Difference]: Without dead ends: 3330 [2018-09-15 15:31:43,346 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-15 15:31:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2018-09-15 15:31:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3322. [2018-09-15 15:31:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3322 states. [2018-09-15 15:31:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 3960 transitions. [2018-09-15 15:31:43,430 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 3960 transitions. Word has length 216 [2018-09-15 15:31:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:31:43,431 INFO L480 AbstractCegarLoop]: Abstraction has 3322 states and 3960 transitions. [2018-09-15 15:31:43,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-15 15:31:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 3960 transitions. [2018-09-15 15:31:43,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-15 15:31:43,437 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:31:43,438 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:31:43,438 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:31:43,438 INFO L82 PathProgramCache]: Analyzing trace with hash 584843788, now seen corresponding path program 1 times [2018-09-15 15:31:43,438 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:31:43,439 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-09-15 15:31:43,439 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], [918], [926], [934], [938], [940], [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], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-09-15 15:31:43,442 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:31:43,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:31:44,818 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown