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_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 11:01:50,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 11:01:50,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 11:01:50,050 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 11:01:50,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 11:01:50,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 11:01:50,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 11:01:50,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 11:01:50,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 11:01:50,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 11:01:50,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 11:01:50,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 11:01:50,060 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 11:01:50,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 11:01:50,062 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 11:01:50,063 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 11:01:50,064 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 11:01:50,066 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 11:01:50,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 11:01:50,069 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 11:01:50,070 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 11:01:50,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 11:01:50,074 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 11:01:50,074 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 11:01:50,074 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 11:01:50,075 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 11:01:50,076 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 11:01:50,077 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 11:01:50,078 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 11:01:50,079 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 11:01:50,079 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 11:01:50,080 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-19 11:01:50,083 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 11:01:50,116 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 11:01:50,116 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 11:01:50,123 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 11:01:50,123 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 11:01:50,123 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 11:01:50,123 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 11:01:50,124 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 11:01:50,124 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 11:01:50,124 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 11:01:50,124 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 11:01:50,124 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 11:01:50,124 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 11:01:50,125 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 11:01:50,126 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 11:01:50,126 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 11:01:50,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 11:01:50,127 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 11:01:50,127 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 11:01:50,127 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 11:01:50,127 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 11:01:50,127 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 11:01:50,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 11:01:50,128 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 11:01:50,128 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 11:01:50,128 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 11:01:50,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 11:01:50,130 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 11:01:50,130 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 11:01:50,131 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 11:01:50,131 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 11:01:50,131 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 11:01:50,131 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 11:01:50,131 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 11:01:50,132 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 11:01:50,132 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 11:01:50,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 11:01:50,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 11:01:50,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 11:01:50,210 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 11:01:50,211 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 11:01:50,211 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label34_true-unreach-call.c [2018-09-19 11:01:50,569 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fdcd33cf/da590d7e049a42ca9341cc8832029040/FLAGb8c7ae72b [2018-09-19 11:01:50,922 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 11:01:50,923 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label34_true-unreach-call.c [2018-09-19 11:01:50,943 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fdcd33cf/da590d7e049a42ca9341cc8832029040/FLAGb8c7ae72b [2018-09-19 11:01:50,966 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fdcd33cf/da590d7e049a42ca9341cc8832029040 [2018-09-19 11:01:50,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 11:01:50,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 11:01:50,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 11:01:50,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 11:01:50,989 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 11:01:50,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:01:50" (1/1) ... [2018-09-19 11:01:50,993 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 11:01:50, skipping insertion in model container [2018-09-19 11:01:50,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 11:01:50" (1/1) ... [2018-09-19 11:01:51,006 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 11:01:51,851 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:01:51,872 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 11:01:52,114 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 11:01:52,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52 WrapperNode [2018-09-19 11:01:52,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 11:01:52,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 11:01:52,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 11:01:52,233 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 11:01:52,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 11:01:52,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 11:01:52,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 11:01:52,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 11:01:52,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (1/1) ... [2018-09-19 11:01:52,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 11:01:52,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 11:01:52,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 11:01:52,954 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 11:01:52,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (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 11:01:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 11:01:53,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 11:01:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-19 11:01:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-19 11:01:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 11:01:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 11:01:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 11:01:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 11:01:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 11:01:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 11:02:00,181 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 11:02:00,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:02:00 BoogieIcfgContainer [2018-09-19 11:02:00,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 11:02:00,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 11:02:00,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 11:02:00,187 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 11:02:00,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 11:01:50" (1/3) ... [2018-09-19 11:02:00,189 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 11:02:00, skipping insertion in model container [2018-09-19 11:02:00,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 11:01:52" (2/3) ... [2018-09-19 11:02:00,190 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 11:02:00, skipping insertion in model container [2018-09-19 11:02:00,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 11:02:00" (3/3) ... [2018-09-19 11:02:00,194 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label34_true-unreach-call.c [2018-09-19 11:02:00,205 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 11:02:00,214 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 11:02:00,271 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 11:02:00,272 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 11:02:00,272 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 11:02:00,272 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 11:02:00,272 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 11:02:00,272 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 11:02:00,272 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 11:02:00,273 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 11:02:00,273 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 11:02:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-19 11:02:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-19 11:02:00,316 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:02:00,318 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] [2018-09-19 11:02:00,319 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:02:00,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1701003787, now seen corresponding path program 1 times [2018-09-19 11:02:00,328 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:02:00,329 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-09-19 11:02:00,332 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], [407], [409], [1556], [1560], [1566], [1570], [1579], [1580], [1581], [1583] [2018-09-19 11:02:00,392 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:02:00,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:02:01,406 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:02:01,408 INFO L272 AbstractInterpreter]: Visited 40 different actions 40 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-19 11:02:01,428 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:02:01,897 INFO L232 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 80.14% of their original sizes. [2018-09-19 11:02:01,898 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:02:02,285 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:02:02,287 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:02:02,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 11:02:02,288 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:02:02,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 11:02:02,302 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 11:02:02,303 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 11:02:02,306 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 6 states. [2018-09-19 11:02:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:02:10,948 INFO L93 Difference]: Finished difference Result 1158 states and 2145 transitions. [2018-09-19 11:02:10,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 11:02:10,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2018-09-19 11:02:10,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:02:10,973 INFO L225 Difference]: With dead ends: 1158 [2018-09-19 11:02:10,974 INFO L226 Difference]: Without dead ends: 746 [2018-09-19 11:02:10,984 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 11:02:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-09-19 11:02:11,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2018-09-19 11:02:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-19 11:02:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1075 transitions. [2018-09-19 11:02:11,096 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1075 transitions. Word has length 41 [2018-09-19 11:02:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:02:11,099 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1075 transitions. [2018-09-19 11:02:11,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 11:02:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1075 transitions. [2018-09-19 11:02:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-19 11:02:11,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:02:11,110 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, 1, 1, 1, 1] [2018-09-19 11:02:11,110 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:02:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash 699334280, now seen corresponding path program 1 times [2018-09-19 11:02:11,113 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:02:11,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 134 with the following transitions: [2018-09-19 11:02:11,114 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], [407], [409], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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 11:02:11,131 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:02:11,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:02:13,443 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:02:17,499 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:02:17,499 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 11:02:17,509 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:02:18,627 INFO L232 lantSequenceWeakener]: Weakened 131 states. On average, predicates are now at 78.2% of their original sizes. [2018-09-19 11:02:18,628 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:02:19,062 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:02:19,062 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:02:19,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:02:19,063 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:02:19,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:02:19,064 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:02:19,064 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:02:19,065 INFO L87 Difference]: Start difference. First operand 744 states and 1075 transitions. Second operand 11 states. [2018-09-19 11:02:38,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:02:38,891 INFO L93 Difference]: Finished difference Result 1772 states and 3024 transitions. [2018-09-19 11:02:38,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 11:02:38,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2018-09-19 11:02:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:02:38,912 INFO L225 Difference]: With dead ends: 1772 [2018-09-19 11:02:38,912 INFO L226 Difference]: Without dead ends: 1372 [2018-09-19 11:02:38,917 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 141 GetRequests, 123 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 11:02:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2018-09-19 11:02:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1094. [2018-09-19 11:02:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2018-09-19 11:02:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1441 transitions. [2018-09-19 11:02:38,993 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1441 transitions. Word has length 133 [2018-09-19 11:02:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:02:38,994 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 1441 transitions. [2018-09-19 11:02:38,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 11:02:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1441 transitions. [2018-09-19 11:02:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-09-19 11:02:38,999 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:02:38,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:38,999 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:02:39,000 INFO L82 PathProgramCache]: Analyzing trace with hash -440883952, now seen corresponding path program 1 times [2018-09-19 11:02:39,000 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:02:39,000 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 170 with the following transitions: [2018-09-19 11:02:39,001 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], [407], [409], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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 11:02:39,008 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:02:39,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:02:42,065 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:02:47,576 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:02:47,576 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 11:02:47,613 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:02:48,775 INFO L232 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 78% of their original sizes. [2018-09-19 11:02:48,777 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:02:49,382 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:02:49,382 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:02:49,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:02:49,382 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:02:49,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:02:49,383 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:02:49,384 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:02:49,384 INFO L87 Difference]: Start difference. First operand 1094 states and 1441 transitions. Second operand 11 states. [2018-09-19 11:03:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:03:08,707 INFO L93 Difference]: Finished difference Result 2749 states and 4050 transitions. [2018-09-19 11:03:08,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 11:03:08,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 169 [2018-09-19 11:03:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:03:08,731 INFO L225 Difference]: With dead ends: 2749 [2018-09-19 11:03:08,731 INFO L226 Difference]: Without dead ends: 1999 [2018-09-19 11:03:08,736 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 177 GetRequests, 159 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 11:03:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2018-09-19 11:03:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1450. [2018-09-19 11:03:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2018-09-19 11:03:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1815 transitions. [2018-09-19 11:03:08,814 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1815 transitions. Word has length 169 [2018-09-19 11:03:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:03:08,815 INFO L480 AbstractCegarLoop]: Abstraction has 1450 states and 1815 transitions. [2018-09-19 11:03:08,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 11:03:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1815 transitions. [2018-09-19 11:03:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-09-19 11:03:08,833 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:03:08,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:08,833 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:03:08,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1030348016, now seen corresponding path program 1 times [2018-09-19 11:03:08,834 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:03:08,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-09-19 11:03:08,835 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], [407], [409], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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 11:03:08,858 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:03:08,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:03:20,865 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:03:20,865 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 11:03:20,872 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:03:22,261 INFO L232 lantSequenceWeakener]: Weakened 279 states. On average, predicates are now at 77.71% of their original sizes. [2018-09-19 11:03:22,262 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:03:22,642 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:03:22,642 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:03:22,642 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 11:03:22,642 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:03:22,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 11:03:22,643 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 11:03:22,644 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 11:03:22,644 INFO L87 Difference]: Start difference. First operand 1450 states and 1815 transitions. Second operand 13 states. [2018-09-19 11:03:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:03:33,808 INFO L93 Difference]: Finished difference Result 2897 states and 3954 transitions. [2018-09-19 11:03:33,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-19 11:03:33,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 281 [2018-09-19 11:03:33,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:03:33,826 INFO L225 Difference]: With dead ends: 2897 [2018-09-19 11:03:33,826 INFO L226 Difference]: Without dead ends: 1793 [2018-09-19 11:03:33,830 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 291 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-09-19 11:03:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2018-09-19 11:03:33,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1790. [2018-09-19 11:03:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1790 states. [2018-09-19 11:03:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2172 transitions. [2018-09-19 11:03:33,888 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2172 transitions. Word has length 281 [2018-09-19 11:03:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:03:33,888 INFO L480 AbstractCegarLoop]: Abstraction has 1790 states and 2172 transitions. [2018-09-19 11:03:33,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 11:03:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2172 transitions. [2018-09-19 11:03:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-19 11:03:33,894 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:03:33,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:33,895 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:03:33,896 INFO L82 PathProgramCache]: Analyzing trace with hash -811055744, now seen corresponding path program 1 times [2018-09-19 11:03:33,896 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:03:33,896 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-09-19 11:03:33,897 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], [407], [409], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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 11:03:33,904 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:03:33,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:03:51,899 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:03:51,900 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 11:03:51,903 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:03:53,256 INFO L232 lantSequenceWeakener]: Weakened 287 states. On average, predicates are now at 77.69% of their original sizes. [2018-09-19 11:03:53,256 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:03:53,721 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:03:53,722 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:03:53,722 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 11:03:53,722 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:03:53,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 11:03:53,723 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 11:03:53,723 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-19 11:03:53,724 INFO L87 Difference]: Start difference. First operand 1790 states and 2172 transitions. Second operand 14 states. [2018-09-19 11:04:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:04:06,573 INFO L93 Difference]: Finished difference Result 3242 states and 4318 transitions. [2018-09-19 11:04:06,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-19 11:04:06,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 289 [2018-09-19 11:04:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:04:06,585 INFO L225 Difference]: With dead ends: 3242 [2018-09-19 11:04:06,585 INFO L226 Difference]: Without dead ends: 2138 [2018-09-19 11:04:06,589 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 301 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2018-09-19 11:04:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2018-09-19 11:04:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2132. [2018-09-19 11:04:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2018-09-19 11:04:06,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2533 transitions. [2018-09-19 11:04:06,654 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2533 transitions. Word has length 289 [2018-09-19 11:04:06,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:04:06,655 INFO L480 AbstractCegarLoop]: Abstraction has 2132 states and 2533 transitions. [2018-09-19 11:04:06,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 11:04:06,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2533 transitions. [2018-09-19 11:04:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-09-19 11:04:06,664 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:04:06,664 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, 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 11:04:06,665 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:04:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -387542163, now seen corresponding path program 1 times [2018-09-19 11:04:06,665 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:04:06,666 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-09-19 11:04:06,666 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], [407], [409], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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 11:04:06,673 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:04:06,673 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:04:08,416 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:04:30,641 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:04:30,641 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 11:04:30,650 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:04:32,746 INFO L232 lantSequenceWeakener]: Weakened 371 states. On average, predicates are now at 77.62% of their original sizes. [2018-09-19 11:04:32,746 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:04:33,037 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:04:33,037 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:04:33,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:04:33,038 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:04:33,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:04:33,038 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:04:33,039 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:04:33,039 INFO L87 Difference]: Start difference. First operand 2132 states and 2533 transitions. Second operand 11 states. [2018-09-19 11:04:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:04:48,738 INFO L93 Difference]: Finished difference Result 4495 states and 5901 transitions. [2018-09-19 11:04:48,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 11:04:48,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 373 [2018-09-19 11:04:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:04:48,750 INFO L225 Difference]: With dead ends: 4495 [2018-09-19 11:04:48,750 INFO L226 Difference]: Without dead ends: 3049 [2018-09-19 11:04:48,754 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 383 GetRequests, 363 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 11:04:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2018-09-19 11:04:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2489. [2018-09-19 11:04:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2489 states. [2018-09-19 11:04:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 2917 transitions. [2018-09-19 11:04:48,822 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 2917 transitions. Word has length 373 [2018-09-19 11:04:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:04:48,823 INFO L480 AbstractCegarLoop]: Abstraction has 2489 states and 2917 transitions. [2018-09-19 11:04:48,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 11:04:48,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 2917 transitions. [2018-09-19 11:04:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-19 11:04:48,832 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:04:48,833 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, 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 11:04:48,833 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:04:48,833 INFO L82 PathProgramCache]: Analyzing trace with hash -483537460, now seen corresponding path program 1 times [2018-09-19 11:04:48,834 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:04:48,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 391 with the following transitions: [2018-09-19 11:04:48,834 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], [407], [409], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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 11:04:48,840 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:04:48,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:04:56,101 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:05:12,650 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:05:12,650 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 11:05:12,660 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:05:14,395 INFO L232 lantSequenceWeakener]: Weakened 388 states. On average, predicates are now at 77.61% of their original sizes. [2018-09-19 11:05:14,396 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:05:14,773 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:05:14,774 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:05:14,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 11:05:14,774 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:05:14,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 11:05:14,775 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 11:05:14,775 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-09-19 11:05:14,775 INFO L87 Difference]: Start difference. First operand 2489 states and 2917 transitions. Second operand 13 states. [2018-09-19 11:05:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 11:05:27,249 INFO L93 Difference]: Finished difference Result 4647 states and 5816 transitions. [2018-09-19 11:05:27,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-19 11:05:27,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 390 [2018-09-19 11:05:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 11:05:27,263 INFO L225 Difference]: With dead ends: 4647 [2018-09-19 11:05:27,264 INFO L226 Difference]: Without dead ends: 2844 [2018-09-19 11:05:27,269 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 400 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2018-09-19 11:05:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2018-09-19 11:05:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2833. [2018-09-19 11:05:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2018-09-19 11:05:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3297 transitions. [2018-09-19 11:05:27,352 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3297 transitions. Word has length 390 [2018-09-19 11:05:27,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 11:05:27,353 INFO L480 AbstractCegarLoop]: Abstraction has 2833 states and 3297 transitions. [2018-09-19 11:05:27,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 11:05:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3297 transitions. [2018-09-19 11:05:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-09-19 11:05:27,363 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 11:05:27,364 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:05:27,364 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 11:05:27,365 INFO L82 PathProgramCache]: Analyzing trace with hash -184727051, now seen corresponding path program 1 times [2018-09-19 11:05:27,365 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 11:05:27,365 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-09-19 11:05:27,366 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], [407], [409], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [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 11:05:27,373 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 11:05:27,373 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 11:05:30,023 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 11:05:52,162 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 11:05:52,162 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 11:05:52,168 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 11:05:53,903 INFO L232 lantSequenceWeakener]: Weakened 407 states. On average, predicates are now at 77.59% of their original sizes. [2018-09-19 11:05:53,903 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 11:05:54,205 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 11:05:54,206 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 11:05:54,206 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 11:05:54,206 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 11:05:54,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 11:05:54,207 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 11:05:54,207 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 11:05:54,208 INFO L87 Difference]: Start difference. First operand 2833 states and 3297 transitions. Second operand 11 states. Received shutdown request... [2018-09-19 11:06:09,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-19 11:06:09,701 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 11:06:09,707 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 11:06:09,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 11:06:09 BoogieIcfgContainer [2018-09-19 11:06:09,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 11:06:09,708 INFO L168 Benchmark]: Toolchain (without parser) took 258730.77 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -609.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-19 11:06:09,710 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 11:06:09,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1250.20 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 11:06:09,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.00 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 11:06:09,712 INFO L168 Benchmark]: Boogie Preprocessor took 504.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.0 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-09-19 11:06:09,713 INFO L168 Benchmark]: RCFGBuilder took 7228.09 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: 262.6 MB). Peak memory consumption was 262.6 MB. Max. memory is 7.1 GB. [2018-09-19 11:06:09,718 INFO L168 Benchmark]: TraceAbstraction took 249524.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -50.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-19 11:06:09,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1250.20 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 216.00 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 504.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.0 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7228.09 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: 262.6 MB). Peak memory consumption was 262.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249524.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -50.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). 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, 249.4s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 115.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3048 SDtfs, 15535 SDslu, 2592 SDs, 0 SdLazy, 30560 SolverSat, 3853 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 103.6s Time, PredicateUnifierStatistics: 16 DeclaredPredicates, 2152 GetRequests, 2003 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, 118.7s AbstIntTime, 8 AbstIntIterations, 8 AbstIntStrong, 0.9961918223494285 AbsIntWeakeningRatio, 0.08281174771304767 AbsIntAvgWeakeningVarsNumRemoved, 903.1439576311989 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s 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_label34_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_11-06-09-738.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label34_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_11-06-09-738.csv Completed graceful shutdown