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_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:12:20,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:12:20,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:12:20,538 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:12:20,538 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:12:20,539 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:12:20,540 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:12:20,543 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:12:20,545 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:12:20,547 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:12:20,548 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:12:20,548 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:12:20,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:12:20,552 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:12:20,553 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:12:20,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:12:20,556 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:12:20,558 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:12:20,567 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:12:20,572 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:12:20,573 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:12:20,576 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:12:20,579 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 15:12:20,579 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 15:12:20,580 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 15:12:20,580 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 15:12:20,584 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 15:12:20,585 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 15:12:20,585 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 15:12:20,586 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 15:12:20,589 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 15:12:20,590 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 15:12:20,590 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 15:12:20,591 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 15:12:20,592 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 15:12:20,592 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 15:12:20,593 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 15:12:20,617 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:12:20,617 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:12:20,618 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:12:20,618 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:12:20,618 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:12:20,619 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:12:20,619 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 15:12:20,619 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:12:20,619 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:12:20,619 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 15:12:20,619 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:12:20,620 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:12:20,620 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:12:20,621 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:12:20,621 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:12:20,621 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:12:20,622 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:12:20,622 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:12:20,622 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:12:20,622 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:12:20,623 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:12:20,623 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:12:20,623 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:12:20,623 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:12:20,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:12:20,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:12:20,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:12:20,625 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:12:20,625 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:12:20,626 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:12:20,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:12:20,626 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:12:20,626 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:12:20,627 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:12:20,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:12:20,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:12:20,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:12:20,726 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:12:20,726 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:12:20,727 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-09-15 15:12:20,969 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee97181c/777af8b9e2144706b034415bd83e3fc3/FLAG2237cd676 [2018-09-15 15:12:21,429 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:12:21,433 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-09-15 15:12:21,478 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee97181c/777af8b9e2144706b034415bd83e3fc3/FLAG2237cd676 [2018-09-15 15:12:21,504 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee97181c/777af8b9e2144706b034415bd83e3fc3 [2018-09-15 15:12:21,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:12:21,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:12:21,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:12:21,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:12:21,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:12:21,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:12:21" (1/1) ... [2018-09-15 15:12:21,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29826fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:21, skipping insertion in model container [2018-09-15 15:12:21,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:12:21" (1/1) ... [2018-09-15 15:12:21,550 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:12:22,326 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:12:22,344 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:12:22,592 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:12:22,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22 WrapperNode [2018-09-15 15:12:22,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:12:22,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:12:22,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:12:22,712 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:12:22,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:22,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:22,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:12:22,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:12:22,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:12:22,927 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:12:23,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:23,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:23,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:23,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:23,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:23,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:23,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (1/1) ... [2018-09-15 15:12:23,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:12:23,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:12:23,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:12:23,474 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:12:23,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (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 15:12:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:12:23,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:12:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 15:12:23,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 15:12:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 15:12:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 15:12:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:12:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:12:23,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:12:23,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:12:31,970 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:12:31,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:12:31 BoogieIcfgContainer [2018-09-15 15:12:31,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:12:31,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:12:31,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:12:31,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:12:31,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:12:21" (1/3) ... [2018-09-15 15:12:31,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aec1e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:12:31, skipping insertion in model container [2018-09-15 15:12:31,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:12:22" (2/3) ... [2018-09-15 15:12:31,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aec1e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:12:31, skipping insertion in model container [2018-09-15 15:12:31,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:12:31" (3/3) ... [2018-09-15 15:12:31,980 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label10_true-unreach-call.c [2018-09-15 15:12:31,990 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:12:31,999 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:12:32,053 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:12:32,054 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:12:32,054 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:12:32,054 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:12:32,055 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:12:32,055 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:12:32,055 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:12:32,055 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:12:32,055 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:12:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-15 15:12:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-15 15:12:32,103 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:12:32,104 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] [2018-09-15 15:12:32,106 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:12:32,111 INFO L82 PathProgramCache]: Analyzing trace with hash -369179421, now seen corresponding path program 1 times [2018-09-15 15:12:32,114 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:12:32,115 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-09-15 15:12:32,118 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], [391], [393], [1556], [1560], [1566], [1570], [1579], [1580], [1581], [1583] [2018-09-15 15:12:32,162 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:12:32,163 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:12:32,844 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:12:32,846 INFO L272 AbstractInterpreter]: Visited 38 different actions 38 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-15 15:12:32,897 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:12:33,331 INFO L232 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 79.49% of their original sizes. [2018-09-15 15:12:33,332 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:12:33,605 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:12:33,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:12:33,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 15:12:33,607 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:12:33,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 15:12:33,621 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 15:12:33,622 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:12:33,625 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 6 states. [2018-09-15 15:12:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:12:41,170 INFO L93 Difference]: Finished difference Result 1158 states and 2145 transitions. [2018-09-15 15:12:41,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 15:12:41,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-09-15 15:12:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:12:41,203 INFO L225 Difference]: With dead ends: 1158 [2018-09-15 15:12:41,203 INFO L226 Difference]: Without dead ends: 746 [2018-09-15 15:12:41,214 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:12:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-09-15 15:12:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2018-09-15 15:12:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-15 15:12:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1075 transitions. [2018-09-15 15:12:41,316 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1075 transitions. Word has length 39 [2018-09-15 15:12:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:12:41,318 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1075 transitions. [2018-09-15 15:12:41,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 15:12:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1075 transitions. [2018-09-15 15:12:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-15 15:12:41,327 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:12:41,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:41,330 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:12:41,330 INFO L82 PathProgramCache]: Analyzing trace with hash -8057664, now seen corresponding path program 1 times [2018-09-15 15:12:41,331 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:12:41,331 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-09-15 15:12:41,331 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], [391], [393], [396], [404], [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] [2018-09-15 15:12:41,338 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:12:41,338 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:12:46,472 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:12:51,166 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:12:51,167 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 15:12:51,174 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:12:57,353 INFO L232 lantSequenceWeakener]: Weakened 128 states. On average, predicates are now at 78% of their original sizes. [2018-09-15 15:12:57,354 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:12:57,872 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:12:57,873 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:12:57,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-15 15:12:57,873 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:12:57,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-15 15:12:57,876 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-15 15:12:57,876 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-15 15:12:57,876 INFO L87 Difference]: Start difference. First operand 744 states and 1075 transitions. Second operand 11 states. [2018-09-15 15:13:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:13:05,713 INFO L93 Difference]: Finished difference Result 1826 states and 3140 transitions. [2018-09-15 15:13:05,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 15:13:05,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 131 [2018-09-15 15:13:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:13:05,724 INFO L225 Difference]: With dead ends: 1826 [2018-09-15 15:13:05,724 INFO L226 Difference]: Without dead ends: 1426 [2018-09-15 15:13:05,728 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-15 15:13:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2018-09-15 15:13:05,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1423. [2018-09-15 15:13:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2018-09-15 15:13:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1772 transitions. [2018-09-15 15:13:05,808 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1772 transitions. Word has length 131 [2018-09-15 15:13:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:13:05,809 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 1772 transitions. [2018-09-15 15:13:05,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-15 15:13:05,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1772 transitions. [2018-09-15 15:13:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-09-15 15:13:05,816 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:13:05,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:05,820 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:13:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1412881080, now seen corresponding path program 1 times [2018-09-15 15:13:05,820 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:13:05,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2018-09-15 15:13:05,821 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], [391], [393], [396], [404], [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] [2018-09-15 15:13:05,837 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 15:13:05,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:14:14,914 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 15:15:27,775 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:15:27,776 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 15:15:27,783 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown