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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:44:54,483 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:44:54,485 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:44:54,498 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:44:54,498 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:44:54,499 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:44:54,500 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:44:54,502 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:44:54,504 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:44:54,505 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:44:54,506 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:44:54,506 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:44:54,507 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:44:54,508 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:44:54,509 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:44:54,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:44:54,510 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:44:54,512 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:44:54,514 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:44:54,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:44:54,517 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:44:54,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:44:54,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:44:54,521 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:44:54,521 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:44:54,522 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:44:54,523 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:44:54,524 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:44:54,525 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:44:54,526 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:44:54,527 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:44:54,527 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:44:54,528 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:44:54,528 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:44:54,529 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:44:54,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:44:54,530 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:44:54,550 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:44:54,551 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:44:54,552 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:44:54,552 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:44:54,552 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:44:54,552 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:44:54,552 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:44:54,553 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:44:54,553 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:44:54,553 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:44:54,553 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:44:54,553 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:44:54,555 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:44:54,556 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:44:54,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:44:54,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:44:54,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:44:54,557 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:44:54,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:44:54,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:44:54,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:44:54,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:44:54,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:44:54,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:44:54,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:44:54,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:44:54,560 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:44:54,560 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:44:54,560 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:44:54,560 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:44:54,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:44:54,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:44:54,561 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:44:54,562 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:44:54,562 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:44:54,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:44:54,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:44:54,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:44:54,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:44:54,650 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:44:54,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31_true-unreach-call.c [2018-11-07 20:44:54,714 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b8c9dec/38476747170a4c66acfebfbab756d95e/FLAG0137f7fb6 [2018-11-07 20:44:55,388 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:44:55,390 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label31_true-unreach-call.c [2018-11-07 20:44:55,409 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b8c9dec/38476747170a4c66acfebfbab756d95e/FLAG0137f7fb6 [2018-11-07 20:44:55,425 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b8c9dec/38476747170a4c66acfebfbab756d95e [2018-11-07 20:44:55,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:44:55,438 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:44:55,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:44:55,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:44:55,444 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:44:55,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:55" (1/1) ... [2018-11-07 20:44:55,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d83fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:55, skipping insertion in model container [2018-11-07 20:44:55,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:44:55" (1/1) ... [2018-11-07 20:44:55,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:44:55,553 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:44:56,369 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:44:56,375 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:44:56,683 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:44:56,704 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:44:56,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56 WrapperNode [2018-11-07 20:44:56,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:44:56,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:44:56,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:44:56,706 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:44:56,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:56,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:56,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:44:56,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:44:56,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:44:56,930 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:44:56,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:56,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:56,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:56,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:57,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:57,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:57,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (1/1) ... [2018-11-07 20:44:57,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:44:57,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:44:57,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:44:57,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:44:57,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (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 [2018-11-07 20:44:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:44:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:44:57,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:44:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:44:57,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:44:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:44:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:44:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:44:57,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:44:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:44:57,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:45:04,041 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:45:04,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:04 BoogieIcfgContainer [2018-11-07 20:45:04,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:45:04,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:45:04,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:45:04,047 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:45:04,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:44:55" (1/3) ... [2018-11-07 20:45:04,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c23dbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:04, skipping insertion in model container [2018-11-07 20:45:04,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:44:56" (2/3) ... [2018-11-07 20:45:04,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c23dbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:45:04, skipping insertion in model container [2018-11-07 20:45:04,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:45:04" (3/3) ... [2018-11-07 20:45:04,051 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label31_true-unreach-call.c [2018-11-07 20:45:04,062 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:45:04,076 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:45:04,095 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:45:04,137 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:45:04,138 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:45:04,138 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:45:04,138 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:45:04,139 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:45:04,139 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:45:04,139 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:45:04,139 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:45:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:45:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-07 20:45:04,188 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:04,189 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:45:04,191 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:04,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1590942004, now seen corresponding path program 1 times [2018-11-07 20:45:04,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:04,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:04,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:04,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:04,255 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:04,771 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 20:45:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:45:04,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:04,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:45:04,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:04,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:45:04,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:45:04,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:04,831 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 20:45:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:11,757 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 20:45:11,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:45:11,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-11-07 20:45:11,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:11,786 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 20:45:11,787 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 20:45:11,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 20:45:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 20:45:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 20:45:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 20:45:11,928 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 72 [2018-11-07 20:45:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:11,930 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 20:45:11,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:45:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 20:45:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 20:45:11,947 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:11,947 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:45:11,947 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:11,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:11,948 INFO L82 PathProgramCache]: Analyzing trace with hash 783939575, now seen corresponding path program 1 times [2018-11-07 20:45:11,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:11,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:11,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:11,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:11,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:45:12,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:12,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:45:12,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:12,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:45:12,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:45:12,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:12,231 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 20:45:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:17,106 INFO L93 Difference]: Finished difference Result 2755 states and 5131 transitions. [2018-11-07 20:45:17,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:45:17,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-11-07 20:45:17,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:17,132 INFO L225 Difference]: With dead ends: 2755 [2018-11-07 20:45:17,133 INFO L226 Difference]: Without dead ends: 2002 [2018-11-07 20:45:17,141 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2018-11-07 20:45:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1999. [2018-11-07 20:45:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2018-11-07 20:45:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 3228 transitions. [2018-11-07 20:45:17,236 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 3228 transitions. Word has length 142 [2018-11-07 20:45:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:17,237 INFO L480 AbstractCegarLoop]: Abstraction has 1999 states and 3228 transitions. [2018-11-07 20:45:17,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:45:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 3228 transitions. [2018-11-07 20:45:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 20:45:17,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:17,244 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:45:17,245 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:17,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash -516926077, now seen corresponding path program 1 times [2018-11-07 20:45:17,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:17,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:17,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:17,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:17,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:45:17,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:17,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:45:17,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:17,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:45:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:45:17,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:45:17,698 INFO L87 Difference]: Start difference. First operand 1999 states and 3228 transitions. Second operand 5 states. [2018-11-07 20:45:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:23,937 INFO L93 Difference]: Finished difference Result 6002 states and 9890 transitions. [2018-11-07 20:45:23,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:45:23,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2018-11-07 20:45:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:23,976 INFO L225 Difference]: With dead ends: 6002 [2018-11-07 20:45:23,977 INFO L226 Difference]: Without dead ends: 4009 [2018-11-07 20:45:23,990 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:45:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2018-11-07 20:45:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 3952. [2018-11-07 20:45:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3952 states. [2018-11-07 20:45:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5722 transitions. [2018-11-07 20:45:24,125 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5722 transitions. Word has length 189 [2018-11-07 20:45:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:24,125 INFO L480 AbstractCegarLoop]: Abstraction has 3952 states and 5722 transitions. [2018-11-07 20:45:24,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:45:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5722 transitions. [2018-11-07 20:45:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-11-07 20:45:24,140 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:24,141 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:45:24,141 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:24,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1415360072, now seen corresponding path program 1 times [2018-11-07 20:45:24,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:24,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:24,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:24,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:24,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 334 proven. 98 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 20:45:25,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:45:25,298 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:45:25,300 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 454 with the following transitions: [2018-11-07 20:45:25,303 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [549], [551], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:45:25,370 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:45:25,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:45:26,340 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:45:26,344 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:45:26,346 INFO L272 AbstractInterpreter]: Visited 207 different actions 207 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:45:26,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:26,388 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:45:27,574 INFO L227 lantSequenceWeakener]: Weakened 441 states. On average, predicates are now at 77.84% of their original sizes. [2018-11-07 20:45:27,575 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:45:27,939 INFO L415 sIntCurrentIteration]: We unified 452 AI predicates to 452 [2018-11-07 20:45:27,940 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:45:27,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:45:27,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2018-11-07 20:45:27,941 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:27,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:45:27,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:45:27,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:45:27,943 INFO L87 Difference]: Start difference. First operand 3952 states and 5722 transitions. Second operand 8 states. [2018-11-07 20:45:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:48,556 INFO L93 Difference]: Finished difference Result 8208 states and 11776 transitions. [2018-11-07 20:45:48,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:45:48,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 453 [2018-11-07 20:45:48,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:48,578 INFO L225 Difference]: With dead ends: 8208 [2018-11-07 20:45:48,578 INFO L226 Difference]: Without dead ends: 4262 [2018-11-07 20:45:48,598 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 454 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:45:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2018-11-07 20:45:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 4260. [2018-11-07 20:45:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4260 states. [2018-11-07 20:45:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6039 transitions. [2018-11-07 20:45:48,702 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6039 transitions. Word has length 453 [2018-11-07 20:45:48,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:48,703 INFO L480 AbstractCegarLoop]: Abstraction has 4260 states and 6039 transitions. [2018-11-07 20:45:48,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:45:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6039 transitions. [2018-11-07 20:45:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-11-07 20:45:48,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:48,725 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:45:48,726 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:48,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1738424593, now seen corresponding path program 1 times [2018-11-07 20:45:48,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:48,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:48,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:48,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:48,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-11-07 20:45:49,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:49,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:45:49,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:49,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:45:49,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:45:49,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:49,237 INFO L87 Difference]: Start difference. First operand 4260 states and 6039 transitions. Second operand 4 states. [2018-11-07 20:45:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:53,498 INFO L93 Difference]: Finished difference Result 15390 states and 22659 transitions. [2018-11-07 20:45:53,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:45:53,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 527 [2018-11-07 20:45:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:53,535 INFO L225 Difference]: With dead ends: 15390 [2018-11-07 20:45:53,535 INFO L226 Difference]: Without dead ends: 7672 [2018-11-07 20:45:53,601 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7672 states. [2018-11-07 20:45:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7672 to 7670. [2018-11-07 20:45:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7670 states. [2018-11-07 20:45:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 9884 transitions. [2018-11-07 20:45:53,810 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 9884 transitions. Word has length 527 [2018-11-07 20:45:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:53,811 INFO L480 AbstractCegarLoop]: Abstraction has 7670 states and 9884 transitions. [2018-11-07 20:45:53,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:45:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 9884 transitions. [2018-11-07 20:45:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-11-07 20:45:53,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:53,842 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:45:53,842 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:53,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:53,843 INFO L82 PathProgramCache]: Analyzing trace with hash -523466956, now seen corresponding path program 1 times [2018-11-07 20:45:53,843 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:53,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:53,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:53,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 284 proven. 85 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-07 20:45:54,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:45:54,467 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:45:54,467 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 536 with the following transitions: [2018-11-07 20:45:54,468 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [549], [551], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [722], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:45:54,480 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:45:54,480 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:45:54,921 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:45:54,921 INFO L272 AbstractInterpreter]: Visited 284 different actions 562 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:45:54,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:54,930 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:45:56,326 INFO L227 lantSequenceWeakener]: Weakened 72 states. On average, predicates are now at 77.24% of their original sizes. [2018-11-07 20:45:56,327 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:45:56,636 INFO L415 sIntCurrentIteration]: We unified 534 AI predicates to 534 [2018-11-07 20:45:56,637 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:45:56,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:45:56,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 20:45:56,638 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:56,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 20:45:56,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 20:45:56,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-07 20:45:56,640 INFO L87 Difference]: Start difference. First operand 7670 states and 9884 transitions. Second operand 15 states. [2018-11-07 20:46:01,973 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:46:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:23,079 INFO L93 Difference]: Finished difference Result 16236 states and 20895 transitions. [2018-11-07 20:46:23,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:46:23,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 535 [2018-11-07 20:46:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:23,116 INFO L225 Difference]: With dead ends: 16236 [2018-11-07 20:46:23,117 INFO L226 Difference]: Without dead ends: 8880 [2018-11-07 20:46:23,136 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 542 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:46:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2018-11-07 20:46:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8875. [2018-11-07 20:46:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8875 states. [2018-11-07 20:46:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8875 states to 8875 states and 11141 transitions. [2018-11-07 20:46:23,353 INFO L78 Accepts]: Start accepts. Automaton has 8875 states and 11141 transitions. Word has length 535 [2018-11-07 20:46:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:23,354 INFO L480 AbstractCegarLoop]: Abstraction has 8875 states and 11141 transitions. [2018-11-07 20:46:23,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 20:46:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8875 states and 11141 transitions. [2018-11-07 20:46:23,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2018-11-07 20:46:23,380 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:23,381 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:46:23,382 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:23,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:23,382 INFO L82 PathProgramCache]: Analyzing trace with hash 109211519, now seen corresponding path program 1 times [2018-11-07 20:46:23,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:23,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:23,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:23,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:23,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:46:24,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:46:24,841 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:46:24,841 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 560 with the following transitions: [2018-11-07 20:46:24,842 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [549], [551], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [699], [704], [706], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:46:24,849 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:46:24,850 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:46:25,264 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:46:26,085 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:46:26,085 INFO L272 AbstractInterpreter]: Visited 284 different actions 1123 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:46:26,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:26,093 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:46:26,626 INFO L227 lantSequenceWeakener]: Weakened 554 states. On average, predicates are now at 80.42% of their original sizes. [2018-11-07 20:46:26,627 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:46:26,737 INFO L415 sIntCurrentIteration]: We unified 558 AI predicates to 558 [2018-11-07 20:46:26,737 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:46:26,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:46:26,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:46:26,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:26,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:46:26,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:46:26,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:46:26,740 INFO L87 Difference]: Start difference. First operand 8875 states and 11141 transitions. Second operand 11 states. [2018-11-07 20:46:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:42,905 INFO L93 Difference]: Finished difference Result 18498 states and 24186 transitions. [2018-11-07 20:46:42,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 20:46:42,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 559 [2018-11-07 20:46:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:42,953 INFO L225 Difference]: With dead ends: 18498 [2018-11-07 20:46:42,953 INFO L226 Difference]: Without dead ends: 11142 [2018-11-07 20:46:42,975 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 570 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:46:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11142 states. [2018-11-07 20:46:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11142 to 11107. [2018-11-07 20:46:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11107 states. [2018-11-07 20:46:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11107 states to 11107 states and 13970 transitions. [2018-11-07 20:46:43,208 INFO L78 Accepts]: Start accepts. Automaton has 11107 states and 13970 transitions. Word has length 559 [2018-11-07 20:46:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:43,209 INFO L480 AbstractCegarLoop]: Abstraction has 11107 states and 13970 transitions. [2018-11-07 20:46:43,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:46:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand 11107 states and 13970 transitions. [2018-11-07 20:46:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2018-11-07 20:46:43,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:43,236 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:46:43,236 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:43,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:43,238 INFO L82 PathProgramCache]: Analyzing trace with hash 404400210, now seen corresponding path program 1 times [2018-11-07 20:46:43,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:43,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:43,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:43,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:43,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 20:46:43,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:46:43,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:46:43,745 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:43,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:46:43,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:46:43,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:46:43,746 INFO L87 Difference]: Start difference. First operand 11107 states and 13970 transitions. Second operand 3 states. [2018-11-07 20:46:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:46:46,007 INFO L93 Difference]: Finished difference Result 25325 states and 33656 transitions. [2018-11-07 20:46:46,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:46:46,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 561 [2018-11-07 20:46:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:46:46,077 INFO L225 Difference]: With dead ends: 25325 [2018-11-07 20:46:46,077 INFO L226 Difference]: Without dead ends: 15737 [2018-11-07 20:46:46,121 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:46:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15737 states. [2018-11-07 20:46:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15737 to 15737. [2018-11-07 20:46:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15737 states. [2018-11-07 20:46:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15737 states to 15737 states and 19776 transitions. [2018-11-07 20:46:46,442 INFO L78 Accepts]: Start accepts. Automaton has 15737 states and 19776 transitions. Word has length 561 [2018-11-07 20:46:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:46:46,443 INFO L480 AbstractCegarLoop]: Abstraction has 15737 states and 19776 transitions. [2018-11-07 20:46:46,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:46:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 15737 states and 19776 transitions. [2018-11-07 20:46:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-11-07 20:46:46,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:46:46,481 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:46:46,481 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:46:46,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1940030918, now seen corresponding path program 1 times [2018-11-07 20:46:46,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:46:46,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:46,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:46:46,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:46:46,483 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:46:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:46:47,027 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:46:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 131 proven. 6 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-11-07 20:46:52,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:46:52,724 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:46:52,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 628 with the following transitions: [2018-11-07 20:46:52,725 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [549], [551], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1562], [1566], [1570], [1573], [1576], [1580], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:46:52,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:46:52,730 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:46:53,078 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:46:53,078 INFO L272 AbstractInterpreter]: Visited 287 different actions 567 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:46:53,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:46:53,087 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:46:53,770 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 80.95% of their original sizes. [2018-11-07 20:46:53,770 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:46:54,054 INFO L415 sIntCurrentIteration]: We unified 626 AI predicates to 626 [2018-11-07 20:46:54,054 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:46:54,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:46:54,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2018-11-07 20:46:54,054 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:46:54,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 20:46:54,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 20:46:54,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:46:54,055 INFO L87 Difference]: Start difference. First operand 15737 states and 19776 transitions. Second operand 14 states. [2018-11-07 20:46:59,055 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:30,523 INFO L93 Difference]: Finished difference Result 29334 states and 37290 transitions. [2018-11-07 20:47:30,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:47:30,523 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 627 [2018-11-07 20:47:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:30,585 INFO L225 Difference]: With dead ends: 29334 [2018-11-07 20:47:30,586 INFO L226 Difference]: Without dead ends: 15742 [2018-11-07 20:47:30,620 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 635 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:47:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15742 states. [2018-11-07 20:47:30,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15742 to 15738. [2018-11-07 20:47:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15738 states. [2018-11-07 20:47:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15738 states to 15738 states and 19774 transitions. [2018-11-07 20:47:30,920 INFO L78 Accepts]: Start accepts. Automaton has 15738 states and 19774 transitions. Word has length 627 [2018-11-07 20:47:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:30,921 INFO L480 AbstractCegarLoop]: Abstraction has 15738 states and 19774 transitions. [2018-11-07 20:47:30,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 20:47:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 15738 states and 19774 transitions. [2018-11-07 20:47:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2018-11-07 20:47:31,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:31,001 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:47:31,002 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:31,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:31,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1830337912, now seen corresponding path program 1 times [2018-11-07 20:47:31,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:31,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:31,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:31,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:31,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:31,614 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:47:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 307 proven. 117 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-11-07 20:47:33,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:33,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:33,519 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 740 with the following transitions: [2018-11-07 20:47:33,519 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [549], [551], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1562], [1566], [1570], [1573], [1576], [1580], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:33,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:33,523 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:33,827 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:34,466 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:47:34,466 INFO L272 AbstractInterpreter]: Visited 288 different actions 1138 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:47:34,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:34,472 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:47:35,336 INFO L227 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 84.49% of their original sizes. [2018-11-07 20:47:35,336 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:47:36,331 INFO L415 sIntCurrentIteration]: We unified 738 AI predicates to 738 [2018-11-07 20:47:36,331 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:47:36,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:47:36,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [8] total 25 [2018-11-07 20:47:36,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:36,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:47:36,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:47:36,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:47:36,333 INFO L87 Difference]: Start difference. First operand 15738 states and 19774 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 20:48:32,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-07 20:48:32,142 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:48:32,147 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:48:32,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:48:32 BoogieIcfgContainer [2018-11-07 20:48:32,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:48:32,149 INFO L168 Benchmark]: Toolchain (without parser) took 216711.40 ms. Allocated memory was 1.5 GB in the beginning and 5.9 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 4.6 GB in the end (delta: -3.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 20:48:32,150 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-07 20:48:32,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1265.88 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:48:32,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.2 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:48:32,152 INFO L168 Benchmark]: Boogie Preprocessor took 184.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:48:32,153 INFO L168 Benchmark]: RCFGBuilder took 6929.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.9 MB). Peak memory consumption was 295.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:48:32,153 INFO L168 Benchmark]: TraceAbstraction took 208104.82 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 1.9 GB in the beginning and 4.6 GB in the end (delta: -2.7 GB). Peak memory consumption was 878.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:48:32,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1265.88 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.2 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6929.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.9 MB). Peak memory consumption was 295.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208104.82 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 1.9 GB in the beginning and 4.6 GB in the end (delta: -2.7 GB). Peak memory consumption was 878.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 202]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 202). Cancelled while BasicCegarLoop was constructing difference of abstraction (15738states) and FLOYD_HOARE automaton (currently 43 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (15914 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 208.0s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 180.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3536 SDtfs, 17969 SDslu, 2521 SDs, 0 SdLazy, 26768 SolverSat, 3118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.8s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2995 GetRequests, 2867 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15738occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.1s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9984418475196691 AbsIntWeakeningRatio, 0.05295735900962861 AbsIntAvgWeakeningVarsNumRemoved, 18.868294360385143 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 463 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 4404 NumberOfCodeBlocks, 4404 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4394 ConstructedInterpolants, 0 QuantifiedInterpolants, 9972222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 3316/3624 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown