java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 11:02:43,956 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 11:02:43,958 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 11:02:43,970 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 11:02:43,971 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 11:02:43,972 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 11:02:43,973 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 11:02:43,975 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 11:02:43,977 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 11:02:43,978 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 11:02:43,979 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 11:02:43,979 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 11:02:43,980 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 11:02:43,981 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 11:02:43,982 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 11:02:43,983 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 11:02:43,984 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 11:02:43,986 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 11:02:43,988 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 11:02:43,990 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 11:02:43,991 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 11:02:43,992 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 11:02:43,995 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 11:02:43,995 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 11:02:43,996 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 11:02:43,997 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 11:02:43,998 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 11:02:43,999 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 11:02:44,000 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 11:02:44,001 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 11:02:44,001 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 11:02:44,002 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 11:02:44,005 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-19 11:02:44,024 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 11:02:44,024 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 11:02:44,025 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 11:02:44,027 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 11:02:44,028 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 11:02:44,028 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 11:02:44,028 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 11:02:44,028 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 11:02:44,029 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 11:02:44,029 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 11:02:44,029 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 11:02:44,029 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 11:02:44,029 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 11:02:44,030 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 11:02:44,031 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 11:02:44,032 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 11:02:44,032 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 11:02:44,032 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 11:02:44,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 11:02:44,034 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 11:02:44,034 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 11:02:44,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 11:02:44,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 11:02:44,034 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 11:02:44,035 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 11:02:44,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 11:02:44,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 11:02:44,035 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 11:02:44,035 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 11:02:44,036 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 11:02:44,036 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 11:02:44,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 11:02:44,036 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 11:02:44,036 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 11:02:44,036 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 11:02:44,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 11:02:44,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 11:02:44,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 11:02:44,148 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 11:02:44,148 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 11:02:44,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-09-19 11:02:44,517 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee95781e/9197879ad1a34fbb925de63345227814/FLAG2f17101c8 [2018-09-19 11:02:44,952 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 11:02:44,954 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-09-19 11:02:44,980 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee95781e/9197879ad1a34fbb925de63345227814/FLAG2f17101c8 [2018-09-19 11:02:44,997 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee95781e/9197879ad1a34fbb925de63345227814 [2018-09-19 11:02:45,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 11:02:45,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 11:02:45,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 11:02:45,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 11:02:45,022 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 11:02:45,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:02:44" (1/1) ... [2018-09-19 11:02:45,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c1f22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:45, skipping insertion in model container [2018-09-19 11:02:45,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:02:44" (1/1) ... [2018-09-19 11:02:45,039 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 11:02:45,807 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:02:45,830 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 11:02:46,147 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:02:46,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46 WrapperNode [2018-09-19 11:02:46,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 11:02:46,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 11:02:46,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 11:02:46,277 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 11:02:46,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 11:02:46,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 11:02:46,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 11:02:46,481 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 11:02:46,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:46,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... [2018-09-19 11:02:47,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 11:02:47,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 11:02:47,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 11:02:47,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 11:02:47,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 11:02:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 11:02:47,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 11:02:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-19 11:02:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-19 11:02:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 11:02:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 11:02:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 11:02:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 11:02:47,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 11:02:47,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 11:02:53,445 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 11:02:53,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:02:53 BoogieIcfgContainer [2018-09-19 11:02:53,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 11:02:53,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 11:02:53,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 11:02:53,452 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 11:02:53,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 11:02:44" (1/3) ... [2018-09-19 11:02:53,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cd1530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:02:53, skipping insertion in model container [2018-09-19 11:02:53,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:02:46" (2/3) ... [2018-09-19 11:02:53,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cd1530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 11:02:53, skipping insertion in model container [2018-09-19 11:02:53,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:02:53" (3/3) ... [2018-09-19 11:02:53,458 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label45_true-unreach-call.c [2018-09-19 11:02:53,470 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 11:02:53,482 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 11:02:53,558 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 11:02:53,559 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 11:02:53,559 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 11:02:53,559 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 11:02:53,560 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 11:02:53,560 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 11:02:53,560 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 11:02:53,560 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 11:02:53,560 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 11:02:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-19 11:02:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-19 11:02:53,623 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:02:53,625 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:02:53,627 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:02:53,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1570242596, now seen corresponding path program 1 times [2018-09-19 11:02:53,636 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:02:53,637 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 61 with the following transitions: [2018-09-19 11:02:53,640 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [1556], [1560], [1566], [1570], [1579], [1580], [1581], [1583] [2018-09-19 11:02:53,732 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:02:53,733 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:02:55,368 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:02:55,370 INFO L272 AbstractInterpreter]: Visited 59 different actions 59 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-19 11:02:55,386 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:02:56,164 INFO L232 lantSequenceWeakener]: Weakened 58 states. On average, predicates are now at 80.69% of their original sizes. [2018-09-19 11:02:56,164 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:02:56,454 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:02:56,456 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:02:56,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 11:02:56,456 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:02:56,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 11:02:56,470 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 11:02:56,471 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 11:02:56,474 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 6 states. [2018-09-19 11:03:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:03:05,578 INFO L93 Difference]: Finished difference Result 1158 states and 2145 transitions. [2018-09-19 11:03:05,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 11:03:05,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2018-09-19 11:03:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:03:05,605 INFO L225 Difference]: With dead ends: 1158 [2018-09-19 11:03:05,605 INFO L226 Difference]: Without dead ends: 746 [2018-09-19 11:03:05,617 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 11:03:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-09-19 11:03:05,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2018-09-19 11:03:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-19 11:03:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1075 transitions. [2018-09-19 11:03:05,727 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1075 transitions. Word has length 60 [2018-09-19 11:03:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:03:05,728 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1075 transitions. [2018-09-19 11:03:05,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 11:03:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1075 transitions. [2018-09-19 11:03:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-19 11:03:05,736 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:03:05,737 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:03:05,737 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:03:05,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1841416930, now seen corresponding path program 1 times [2018-09-19 11:03:05,738 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:03:05,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 153 with the following transitions: [2018-09-19 11:03:05,739 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-09-19 11:03:05,744 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:03:05,745 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:03:07,905 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:03:12,350 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:03:12,350 INFO L272 AbstractInterpreter]: Visited 99 different actions 284 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 11:03:12,362 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:03:13,448 INFO L232 lantSequenceWeakener]: Weakened 150 states. On average, predicates are now at 78.65% of their original sizes. [2018-09-19 11:03:13,448 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:03:13,989 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:03:13,989 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:03:13,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:03:13,990 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:03:13,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:03:13,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:03:13,992 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:03:13,992 INFO L87 Difference]: Start difference. First operand 744 states and 1075 transitions. Second operand 11 states. [2018-09-19 11:03:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:03:31,389 INFO L93 Difference]: Finished difference Result 1772 states and 3024 transitions. [2018-09-19 11:03:31,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 11:03:31,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2018-09-19 11:03:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:03:31,400 INFO L225 Difference]: With dead ends: 1772 [2018-09-19 11:03:31,401 INFO L226 Difference]: Without dead ends: 1372 [2018-09-19 11:03:31,404 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 160 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2018-09-19 11:03:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2018-09-19 11:03:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1094. [2018-09-19 11:03:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2018-09-19 11:03:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1441 transitions. [2018-09-19 11:03:31,463 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1441 transitions. Word has length 152 [2018-09-19 11:03:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:03:31,464 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 1441 transitions. [2018-09-19 11:03:31,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 11:03:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1441 transitions. [2018-09-19 11:03:31,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-19 11:03:31,469 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:03:31,470 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:03:31,470 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:03:31,471 INFO L82 PathProgramCache]: Analyzing trace with hash -114299370, now seen corresponding path program 1 times [2018-09-19 11:03:31,471 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:03:31,471 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-09-19 11:03:31,472 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-09-19 11:03:31,477 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:03:31,478 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:03:34,337 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:03:40,997 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:03:40,998 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 11:03:41,004 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:03:42,274 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 78.39% of their original sizes. [2018-09-19 11:03:42,274 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:03:42,844 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:03:42,845 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:03:42,845 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:03:42,845 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:03:42,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:03:42,846 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:03:42,846 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:03:42,847 INFO L87 Difference]: Start difference. First operand 1094 states and 1441 transitions. Second operand 11 states. [2018-09-19 11:03:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:03:56,297 INFO L93 Difference]: Finished difference Result 2749 states and 4050 transitions. [2018-09-19 11:03:56,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 11:03:56,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2018-09-19 11:03:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:03:56,312 INFO L225 Difference]: With dead ends: 2749 [2018-09-19 11:03:56,313 INFO L226 Difference]: Without dead ends: 1999 [2018-09-19 11:03:56,316 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2018-09-19 11:03:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2018-09-19 11:03:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1450. [2018-09-19 11:03:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2018-09-19 11:03:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1815 transitions. [2018-09-19 11:03:56,375 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1815 transitions. Word has length 188 [2018-09-19 11:03:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:03:56,376 INFO L480 AbstractCegarLoop]: Abstraction has 1450 states and 1815 transitions. [2018-09-19 11:03:56,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 11:03:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1815 transitions. [2018-09-19 11:03:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-09-19 11:03:56,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:03:56,384 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:03:56,384 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:03:56,385 INFO L82 PathProgramCache]: Analyzing trace with hash 696817718, now seen corresponding path program 1 times [2018-09-19 11:03:56,385 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:03:56,385 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-09-19 11:03:56,386 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-09-19 11:03:56,395 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:03:56,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:04:08,820 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:04:08,820 INFO L272 AbstractInterpreter]: Visited 247 different actions 488 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 11:04:08,828 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:04:10,179 INFO L232 lantSequenceWeakener]: Weakened 298 states. On average, predicates are now at 77.97% of their original sizes. [2018-09-19 11:04:10,179 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:04:10,547 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:04:10,547 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:04:10,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 11:04:10,548 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:04:10,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 11:04:10,548 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 11:04:10,549 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 11:04:10,549 INFO L87 Difference]: Start difference. First operand 1450 states and 1815 transitions. Second operand 13 states. [2018-09-19 11:04:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:04:21,328 INFO L93 Difference]: Finished difference Result 2897 states and 3954 transitions. [2018-09-19 11:04:21,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 11:04:21,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 300 [2018-09-19 11:04:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:04:21,345 INFO L225 Difference]: With dead ends: 2897 [2018-09-19 11:04:21,345 INFO L226 Difference]: Without dead ends: 1793 [2018-09-19 11:04:21,349 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 310 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-09-19 11:04:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2018-09-19 11:04:21,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1790. [2018-09-19 11:04:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1790 states. [2018-09-19 11:04:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2172 transitions. [2018-09-19 11:04:21,411 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2172 transitions. Word has length 300 [2018-09-19 11:04:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:04:21,412 INFO L480 AbstractCegarLoop]: Abstraction has 1790 states and 2172 transitions. [2018-09-19 11:04:21,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 11:04:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2172 transitions. [2018-09-19 11:04:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-09-19 11:04:21,418 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:04:21,418 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:04:21,419 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:04:21,419 INFO L82 PathProgramCache]: Analyzing trace with hash 770700966, now seen corresponding path program 1 times [2018-09-19 11:04:21,419 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:04:21,419 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 309 with the following transitions: [2018-09-19 11:04:21,420 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-09-19 11:04:21,428 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:04:21,428 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:04:40,864 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:04:40,864 INFO L272 AbstractInterpreter]: Visited 255 different actions 752 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-19 11:04:40,871 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:04:42,145 INFO L232 lantSequenceWeakener]: Weakened 306 states. On average, predicates are now at 77.95% of their original sizes. [2018-09-19 11:04:42,146 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:04:42,629 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:04:42,629 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:04:42,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 11:04:42,630 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:04:42,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 11:04:42,630 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 11:04:42,631 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-19 11:04:42,631 INFO L87 Difference]: Start difference. First operand 1790 states and 2172 transitions. Second operand 14 states. [2018-09-19 11:04:54,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:04:54,968 INFO L93 Difference]: Finished difference Result 3242 states and 4318 transitions. [2018-09-19 11:04:54,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 11:04:54,980 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 308 [2018-09-19 11:04:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:04:54,993 INFO L225 Difference]: With dead ends: 3242 [2018-09-19 11:04:54,993 INFO L226 Difference]: Without dead ends: 2138 [2018-09-19 11:04:54,997 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2018-09-19 11:04:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2018-09-19 11:04:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2132. [2018-09-19 11:04:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2018-09-19 11:04:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2533 transitions. [2018-09-19 11:04:55,068 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2533 transitions. Word has length 308 [2018-09-19 11:04:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:04:55,069 INFO L480 AbstractCegarLoop]: Abstraction has 2132 states and 2533 transitions. [2018-09-19 11:04:55,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 11:04:55,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2533 transitions. [2018-09-19 11:04:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-09-19 11:04:55,078 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:04:55,078 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:04:55,079 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:04:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1409724040, now seen corresponding path program 1 times [2018-09-19 11:04:55,079 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:04:55,079 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 393 with the following transitions: [2018-09-19 11:04:55,080 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-09-19 11:04:55,086 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:04:55,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:04:56,653 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:05:21,034 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:05:21,034 INFO L272 AbstractInterpreter]: Visited 248 different actions 983 times. Merged at 7 different actions 24 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 11:05:21,040 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:05:23,077 INFO L232 lantSequenceWeakener]: Weakened 390 states. On average, predicates are now at 77.83% of their original sizes. [2018-09-19 11:05:23,077 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:05:23,363 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:05:23,363 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:05:23,364 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:05:23,364 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:05:23,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:05:23,365 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:05:23,365 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:05:23,365 INFO L87 Difference]: Start difference. First operand 2132 states and 2533 transitions. Second operand 11 states. [2018-09-19 11:05:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:05:41,752 INFO L93 Difference]: Finished difference Result 4495 states and 5901 transitions. [2018-09-19 11:05:41,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 11:05:41,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 392 [2018-09-19 11:05:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:05:41,770 INFO L225 Difference]: With dead ends: 4495 [2018-09-19 11:05:41,770 INFO L226 Difference]: Without dead ends: 3049 [2018-09-19 11:05:41,776 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 402 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2018-09-19 11:05:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2018-09-19 11:05:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2489. [2018-09-19 11:05:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2489 states. [2018-09-19 11:05:41,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 2917 transitions. [2018-09-19 11:05:41,846 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 2917 transitions. Word has length 392 [2018-09-19 11:05:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:05:41,847 INFO L480 AbstractCegarLoop]: Abstraction has 2489 states and 2917 transitions. [2018-09-19 11:05:41,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 11:05:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 2917 transitions. [2018-09-19 11:05:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-09-19 11:05:41,857 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:05:41,858 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:05:41,858 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:05:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash 238497661, now seen corresponding path program 1 times [2018-09-19 11:05:41,858 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:05:41,859 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-09-19 11:05:41,859 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-09-19 11:05:41,864 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:05:41,864 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:05:50,946 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:06:08,922 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:06:08,923 INFO L272 AbstractInterpreter]: Visited 256 different actions 1013 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 11:06:08,929 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:06:10,883 INFO L232 lantSequenceWeakener]: Weakened 407 states. On average, predicates are now at 77.8% of their original sizes. [2018-09-19 11:06:10,883 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:06:11,266 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:06:11,267 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:06:11,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 11:06:11,267 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:06:11,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 11:06:11,268 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 11:06:11,268 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 11:06:11,268 INFO L87 Difference]: Start difference. First operand 2489 states and 2917 transitions. Second operand 13 states. [2018-09-19 11:06:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:06:21,250 INFO L93 Difference]: Finished difference Result 4647 states and 5816 transitions. [2018-09-19 11:06:21,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-19 11:06:21,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 409 [2018-09-19 11:06:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:06:21,265 INFO L225 Difference]: With dead ends: 4647 [2018-09-19 11:06:21,265 INFO L226 Difference]: Without dead ends: 2844 [2018-09-19 11:06:21,271 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 419 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2018-09-19 11:06:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2018-09-19 11:06:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2833. [2018-09-19 11:06:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2018-09-19 11:06:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3297 transitions. [2018-09-19 11:06:21,345 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3297 transitions. Word has length 409 [2018-09-19 11:06:21,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:06:21,346 INFO L480 AbstractCegarLoop]: Abstraction has 2833 states and 3297 transitions. [2018-09-19 11:06:21,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 11:06:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3297 transitions. [2018-09-19 11:06:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-09-19 11:06:21,351 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:06:21,352 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 11:06:21,352 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:06:21,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1382221200, now seen corresponding path program 1 times [2018-09-19 11:06:21,353 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:06:21,353 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-09-19 11:06:21,353 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-09-19 11:06:21,358 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:06:21,358 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:06:24,157 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:06:47,650 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:06:47,650 INFO L272 AbstractInterpreter]: Visited 248 different actions 983 times. Merged at 7 different actions 24 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 11:06:47,657 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:06:49,359 INFO L232 lantSequenceWeakener]: Weakened 426 states. On average, predicates are now at 77.78% of their original sizes. [2018-09-19 11:06:49,359 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:06:49,651 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:06:49,652 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:06:49,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:06:49,652 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:06:49,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:06:49,653 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:06:49,653 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:06:49,654 INFO L87 Difference]: Start difference. First operand 2833 states and 3297 transitions. Second operand 11 states. Received shutdown request... [2018-09-19 11:07:07,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 11:07:07,814 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 11:07:07,821 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 11:07:07,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 11:07:07 BoogieIcfgContainer [2018-09-19 11:07:07,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 11:07:07,823 INFO L168 Benchmark]: Toolchain (without parser) took 262814.36 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 982.0 MB. Max. memory is 7.1 GB. [2018-09-19 11:07:07,825 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:07:07,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1261.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-19 11:07:07,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-19 11:07:07,827 INFO L168 Benchmark]: Boogie Preprocessor took 545.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-09-19 11:07:07,828 INFO L168 Benchmark]: RCFGBuilder took 6420.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 268.3 MB). Peak memory consumption was 268.3 MB. Max. memory is 7.1 GB. [2018-09-19 11:07:07,829 INFO L168 Benchmark]: TraceAbstraction took 254373.53 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 735.3 MB. Max. memory is 7.1 GB. [2018-09-19 11:07:07,834 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1261.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 204.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 545.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6420.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 268.3 MB). Peak memory consumption was 268.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254373.53 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 735.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (2833states) and FLOYD_HOARE automaton (currently 20 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (4598 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 254.2s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 109.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3048 SDtfs, 15737 SDslu, 2494 SDs, 0 SdLazy, 29676 SolverSat, 3851 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 97.7s Time, PredicateUnifierStatistics: 16 DeclaredPredicates, 2304 GetRequests, 2155 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2833occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 129.1s AbstIntTime, 8 AbstIntIterations, 8 AbstIntStrong, 0.9964515096544473 AbsIntWeakeningRatio, 0.07716464782413639 AbsIntAvgWeakeningVarsNumRemoved, 905.3844773441004 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 1409 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label45_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_11-07-07-848.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label45_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_11-07-07-848.csv Completed graceful shutdown