java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:16:31,916 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:16:31,918 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:16:31,931 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:16:31,931 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:16:31,932 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:16:31,934 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:16:31,936 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:16:31,937 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:16:31,938 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:16:31,939 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:16:31,939 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:16:31,940 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:16:31,941 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:16:31,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:16:31,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:16:31,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:16:31,949 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:16:31,957 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:16:31,959 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:16:31,962 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:16:31,967 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:16:31,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 15:16:31,971 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 15:16:31,971 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 15:16:31,972 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 15:16:31,973 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 15:16:31,974 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 15:16:31,974 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 15:16:31,978 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 15:16:31,978 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 15:16:31,979 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 15:16:31,984 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 15:16:32,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:16:32,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:16:32,008 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:16:32,008 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:16:32,008 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:16:32,008 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:16:32,008 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 15:16:32,009 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:16:32,009 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:16:32,009 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 15:16:32,009 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:16:32,009 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:16:32,010 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:16:32,010 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:16:32,011 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:16:32,011 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:16:32,011 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:16:32,011 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:16:32,011 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:16:32,012 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:16:32,012 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:16:32,012 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:16:32,012 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:16:32,012 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:16:32,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:16:32,013 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:16:32,013 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:16:32,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:16:32,013 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:16:32,014 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:16:32,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:16:32,014 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:16:32,014 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:16:32,014 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:16:32,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:16:32,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:16:32,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:16:32,076 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:16:32,077 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:16:32,078 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label32_true-unreach-call.c [2018-09-15 15:16:32,416 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc93eaab9/c3bdf16afc87469d9824416d197d40fc/FLAG9c59dc6ef [2018-09-15 15:16:32,844 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:16:32,845 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label32_true-unreach-call.c [2018-09-15 15:16:32,863 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc93eaab9/c3bdf16afc87469d9824416d197d40fc/FLAG9c59dc6ef [2018-09-15 15:16:32,878 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc93eaab9/c3bdf16afc87469d9824416d197d40fc [2018-09-15 15:16:32,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:16:32,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:16:32,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:16:32,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:16:32,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:16:32,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:16:32" (1/1) ... [2018-09-15 15:16:32,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b74e025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:32, skipping insertion in model container [2018-09-15 15:16:32,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:16:32" (1/1) ... [2018-09-15 15:16:32,919 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:16:33,690 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:16:33,713 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:16:33,940 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:16:34,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34 WrapperNode [2018-09-15 15:16:34,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:16:34,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:16:34,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:16:34,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:16:34,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:16:34,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:16:34,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:16:34,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:16:34,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... [2018-09-15 15:16:34,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:16:34,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:16:34,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:16:34,733 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:16:34,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:16:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:16:34,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:16:34,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 15:16:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 15:16:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 15:16:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 15:16:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:16:34,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:16:34,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:16:34,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:16:40,839 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:16:40,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:16:40 BoogieIcfgContainer [2018-09-15 15:16:40,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:16:40,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:16:40,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:16:40,846 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:16:40,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:16:32" (1/3) ... [2018-09-15 15:16:40,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2173ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:16:40, skipping insertion in model container [2018-09-15 15:16:40,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:16:34" (2/3) ... [2018-09-15 15:16:40,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2173ecf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:16:40, skipping insertion in model container [2018-09-15 15:16:40,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:16:40" (3/3) ... [2018-09-15 15:16:40,850 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label32_true-unreach-call.c [2018-09-15 15:16:40,861 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:16:40,871 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:16:40,942 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:16:40,943 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:16:40,944 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:16:40,944 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:16:40,944 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:16:40,944 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:16:40,945 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:16:40,945 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:16:40,945 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:16:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-15 15:16:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-15 15:16:41,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:16:41,002 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] [2018-09-15 15:16:41,003 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:16:41,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1067994659, now seen corresponding path program 1 times [2018-09-15 15:16:41,013 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:16:41,014 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-09-15 15:16:41,017 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], [519], [521], [1556], [1560], [1566], [1570], [1579], [1580], [1581], [1583] [2018-09-15 15:16:41,059 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:16:41,060 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:16:41,988 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:16:41,990 INFO L272 AbstractInterpreter]: Visited 54 different actions 54 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 15:16:42,038 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:16:42,733 INFO L232 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 80.21% of their original sizes. [2018-09-15 15:16:42,733 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:16:43,049 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:16:43,051 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:16:43,051 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 15:16:43,052 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:16:43,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 15:16:43,068 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 15:16:43,069 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:16:43,072 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 6 states. [2018-09-15 15:16:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:16:50,044 INFO L93 Difference]: Finished difference Result 1158 states and 2145 transitions. [2018-09-15 15:16:50,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 15:16:50,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2018-09-15 15:16:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:16:50,072 INFO L225 Difference]: With dead ends: 1158 [2018-09-15 15:16:50,073 INFO L226 Difference]: Without dead ends: 746 [2018-09-15 15:16:50,083 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:16:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-09-15 15:16:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2018-09-15 15:16:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-15 15:16:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1075 transitions. [2018-09-15 15:16:50,186 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1075 transitions. Word has length 55 [2018-09-15 15:16:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:16:50,190 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1075 transitions. [2018-09-15 15:16:50,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 15:16:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1075 transitions. [2018-09-15 15:16:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-09-15 15:16:50,197 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:16:50,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:16:50,198 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:16:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1264573184, now seen corresponding path program 1 times [2018-09-15 15:16:50,198 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:16:50,198 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-09-15 15:16:50,199 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], [519], [521], [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] [2018-09-15 15:16:50,205 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:16:50,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:16:55,505 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:17:00,576 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:17:00,576 INFO L272 AbstractInterpreter]: Visited 99 different actions 191 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-15 15:17:00,587 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:17:06,807 INFO L232 lantSequenceWeakener]: Weakened 144 states. On average, predicates are now at 78.42% of their original sizes. [2018-09-15 15:17:06,807 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:17:07,805 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:17:07,806 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:17:07,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 15:17:07,807 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:17:07,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 15:17:07,810 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 15:17:07,810 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-15 15:17:07,810 INFO L87 Difference]: Start difference. First operand 744 states and 1075 transitions. Second operand 11 states. [2018-09-15 15:17:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:17:16,319 INFO L93 Difference]: Finished difference Result 1826 states and 3140 transitions. [2018-09-15 15:17:16,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 15:17:16,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 147 [2018-09-15 15:17:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:17:16,330 INFO L225 Difference]: With dead ends: 1826 [2018-09-15 15:17:16,330 INFO L226 Difference]: Without dead ends: 1426 [2018-09-15 15:17:16,333 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 15:17:16,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2018-09-15 15:17:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1423. [2018-09-15 15:17:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2018-09-15 15:17:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1772 transitions. [2018-09-15 15:17:16,397 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1772 transitions. Word has length 147 [2018-09-15 15:17:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:17:16,398 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 1772 transitions. [2018-09-15 15:17:16,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 15:17:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1772 transitions. [2018-09-15 15:17:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-15 15:17:16,403 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:17:16,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:17:16,404 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:17:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2114872200, now seen corresponding path program 1 times [2018-09-15 15:17:16,405 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:17:16,405 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 184 with the following transitions: [2018-09-15 15:17:16,406 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], [519], [521], [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] [2018-09-15 15:17:16,414 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:17:16,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:18:24,636 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:19:33,472 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:19:33,473 INFO L272 AbstractInterpreter]: Visited 135 different actions 263 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-15 15:19:33,483 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown