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/Problem14_label48_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:07:11,388 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:07:11,390 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:07:11,402 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:07:11,403 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:07:11,404 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:07:11,405 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:07:11,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:07:11,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:07:11,415 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:07:11,416 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:07:11,416 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:07:11,417 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:07:11,420 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:07:11,425 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:07:11,425 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:07:11,426 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:07:11,430 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:07:11,436 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:07:11,442 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:07:11,443 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:07:11,444 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:07:11,447 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:07:11,448 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:07:11,448 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:07:11,449 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:07:11,450 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:07:11,450 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:07:11,451 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:07:11,452 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:07:11,452 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:07:11,453 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:07:11,453 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:07:11,453 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:07:11,454 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:07:11,455 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:07:11,455 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 [2018-11-12 19:07:11,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:07:11,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:07:11,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:07:11,472 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:07:11,472 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:07:11,472 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:07:11,472 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:07:11,472 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:07:11,473 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:07:11,473 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:07:11,473 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:07:11,473 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:07:11,473 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:07:11,474 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:07:11,474 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:07:11,474 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:07:11,475 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:07:11,475 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:07:11,475 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:07:11,475 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:07:11,475 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:07:11,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:07:11,476 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:07:11,476 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:07:11,476 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:07:11,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:07:11,477 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:07:11,477 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:07:11,477 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:07:11,477 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:07:11,477 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:07:11,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:07:11,478 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:07:11,478 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:07:11,478 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:07:11,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:07:11,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:07:11,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:07:11,547 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:07:11,547 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:07:11,548 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label48_true-unreach-call_false-termination.c [2018-11-12 19:07:11,604 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6dd6048/4910c9b7362741da9401bd0b32e7380e/FLAGa2764b014 [2018-11-12 19:07:12,232 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:07:12,235 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label48_true-unreach-call_false-termination.c [2018-11-12 19:07:12,249 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6dd6048/4910c9b7362741da9401bd0b32e7380e/FLAGa2764b014 [2018-11-12 19:07:12,269 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d6dd6048/4910c9b7362741da9401bd0b32e7380e [2018-11-12 19:07:12,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:07:12,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:07:12,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:07:12,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:07:12,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:07:12,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:07:12" (1/1) ... [2018-11-12 19:07:12,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79453385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:12, skipping insertion in model container [2018-11-12 19:07:12,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:07:12" (1/1) ... [2018-11-12 19:07:12,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:07:12,394 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:07:12,945 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:07:12,951 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:07:13,125 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:07:13,148 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:07:13,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13 WrapperNode [2018-11-12 19:07:13,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:07:13,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:07:13,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:07:13,151 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:07:13,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:07:13,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:07:13,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:07:13,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:07:13,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (1/1) ... [2018-11-12 19:07:13,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:07:13,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:07:13,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:07:13,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:07:13,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (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 [2018-11-12 19:07:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:07:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:07:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:07:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:07:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:07:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:07:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:07:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:07:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:07:17,263 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:07:17,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:07:17 BoogieIcfgContainer [2018-11-12 19:07:17,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:07:17,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:07:17,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:07:17,269 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:07:17,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:07:12" (1/3) ... [2018-11-12 19:07:17,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1ab881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:07:17, skipping insertion in model container [2018-11-12 19:07:17,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:13" (2/3) ... [2018-11-12 19:07:17,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1ab881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:07:17, skipping insertion in model container [2018-11-12 19:07:17,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:07:17" (3/3) ... [2018-11-12 19:07:17,273 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label48_true-unreach-call_false-termination.c [2018-11-12 19:07:17,284 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:07:17,293 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:07:17,311 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:07:17,350 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:07:17,350 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:07:17,350 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:07:17,350 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:07:17,351 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:07:17,351 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:07:17,351 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:07:17,351 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:07:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-12 19:07:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-12 19:07:17,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:17,391 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] [2018-11-12 19:07:17,393 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:17,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:17,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1554885399, now seen corresponding path program 1 times [2018-11-12 19:07:17,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:17,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:17,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:17,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:17,446 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:17,844 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:07:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:17,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:07:17,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:07:17,960 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:17,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:07:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:07:17,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:07:17,985 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-12 19:07:19,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:19,864 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-12 19:07:19,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:07:19,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-12 19:07:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:19,887 INFO L225 Difference]: With dead ends: 691 [2018-11-12 19:07:19,887 INFO L226 Difference]: Without dead ends: 434 [2018-11-12 19:07:19,896 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:07:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-12 19:07:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-12 19:07:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-12 19:07:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 773 transitions. [2018-11-12 19:07:19,987 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 773 transitions. Word has length 45 [2018-11-12 19:07:19,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:19,988 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 773 transitions. [2018-11-12 19:07:19,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:07:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 773 transitions. [2018-11-12 19:07:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-12 19:07:20,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:20,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:07:20,004 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:20,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:20,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1040211556, now seen corresponding path program 1 times [2018-11-12 19:07:20,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:20,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:20,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:20,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:20,008 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:20,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:07:20,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:07:20,399 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:20,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:07:20,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:07:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:07:20,403 INFO L87 Difference]: Start difference. First operand 434 states and 773 transitions. Second operand 6 states. [2018-11-12 19:07:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:24,475 INFO L93 Difference]: Finished difference Result 1610 states and 2994 transitions. [2018-11-12 19:07:24,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:07:24,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-12 19:07:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:24,489 INFO L225 Difference]: With dead ends: 1610 [2018-11-12 19:07:24,489 INFO L226 Difference]: Without dead ends: 1182 [2018-11-12 19:07:24,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:07:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-11-12 19:07:24,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1142. [2018-11-12 19:07:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2018-11-12 19:07:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1838 transitions. [2018-11-12 19:07:24,578 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1838 transitions. Word has length 127 [2018-11-12 19:07:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:24,578 INFO L480 AbstractCegarLoop]: Abstraction has 1142 states and 1838 transitions. [2018-11-12 19:07:24,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:07:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1838 transitions. [2018-11-12 19:07:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-12 19:07:24,583 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:24,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:07:24,584 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:24,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:24,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1871635456, now seen corresponding path program 1 times [2018-11-12 19:07:24,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:24,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:24,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:24,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:24,586 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:24,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:07:24,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:07:24,783 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:24,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:07:24,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:07:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:07:24,784 INFO L87 Difference]: Start difference. First operand 1142 states and 1838 transitions. Second operand 4 states. [2018-11-12 19:07:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:27,588 INFO L93 Difference]: Finished difference Result 4001 states and 6744 transitions. [2018-11-12 19:07:27,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:07:27,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-11-12 19:07:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:27,607 INFO L225 Difference]: With dead ends: 4001 [2018-11-12 19:07:27,607 INFO L226 Difference]: Without dead ends: 1794 [2018-11-12 19:07:27,623 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 [2018-11-12 19:07:27,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2018-11-12 19:07:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1792. [2018-11-12 19:07:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2018-11-12 19:07:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2830 transitions. [2018-11-12 19:07:27,687 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2830 transitions. Word has length 129 [2018-11-12 19:07:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:27,688 INFO L480 AbstractCegarLoop]: Abstraction has 1792 states and 2830 transitions. [2018-11-12 19:07:27,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:07:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2830 transitions. [2018-11-12 19:07:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-12 19:07:27,696 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:27,696 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:07:27,697 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:27,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:27,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1164018588, now seen corresponding path program 1 times [2018-11-12 19:07:27,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:27,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:27,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:27,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:27,699 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:28,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:07:28,272 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:07:28,273 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-11-12 19:07:28,278 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:07:28,341 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:07:28,342 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:07:28,834 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:07:28,898 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:07:28,899 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Performed 747 root evaluator evaluations with a maximum evaluation depth of 6. Performed 747 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:07:28,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:28,947 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:07:29,495 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 77.88% of their original sizes. [2018-11-12 19:07:29,496 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:07:29,839 INFO L415 sIntCurrentIteration]: We unified 205 AI predicates to 205 [2018-11-12 19:07:29,840 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:07:29,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:07:29,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:07:29,841 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:29,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:07:29,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:07:29,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:07:29,843 INFO L87 Difference]: Start difference. First operand 1792 states and 2830 transitions. Second operand 7 states. [2018-11-12 19:07:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:48,054 INFO L93 Difference]: Finished difference Result 3763 states and 5887 transitions. [2018-11-12 19:07:48,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:07:48,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2018-11-12 19:07:48,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:48,073 INFO L225 Difference]: With dead ends: 3763 [2018-11-12 19:07:48,074 INFO L226 Difference]: Without dead ends: 1977 [2018-11-12 19:07:48,081 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:07:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2018-11-12 19:07:48,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2018-11-12 19:07:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-11-12 19:07:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3021 transitions. [2018-11-12 19:07:48,147 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3021 transitions. Word has length 206 [2018-11-12 19:07:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:48,148 INFO L480 AbstractCegarLoop]: Abstraction has 1975 states and 3021 transitions. [2018-11-12 19:07:48,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:07:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3021 transitions. [2018-11-12 19:07:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-12 19:07:48,158 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:48,158 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:07:48,158 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:48,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash 518878410, now seen corresponding path program 1 times [2018-11-12 19:07:48,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:48,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:48,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:48,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:48,163 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:48,701 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:48,896 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:07:49,094 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:49,570 WARN L179 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 19:07:50,153 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-12 19:07:50,492 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-12 19:07:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 191 proven. 151 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:07:50,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:07:50,777 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:07:50,777 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-11-12 19:07:50,777 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:07:50,781 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:07:50,782 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:07:50,848 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:07:51,040 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:07:51,040 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 4 different actions 4 times. Never widened. Performed 1754 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1754 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:07:51,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:51,079 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:07:51,706 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 78.03% of their original sizes. [2018-11-12 19:07:51,707 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:07:53,024 INFO L415 sIntCurrentIteration]: We unified 290 AI predicates to 290 [2018-11-12 19:07:53,024 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:07:53,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:07:53,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-12 19:07:53,025 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:53,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:07:53,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:07:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:07:53,027 INFO L87 Difference]: Start difference. First operand 1975 states and 3021 transitions. Second operand 19 states. [2018-11-12 19:08:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:08:17,673 INFO L93 Difference]: Finished difference Result 4741 states and 7040 transitions. [2018-11-12 19:08:17,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 19:08:17,673 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 291 [2018-11-12 19:08:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:08:17,687 INFO L225 Difference]: With dead ends: 4741 [2018-11-12 19:08:17,687 INFO L226 Difference]: Without dead ends: 2955 [2018-11-12 19:08:17,694 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 299 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2018-11-12 19:08:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2018-11-12 19:08:17,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2694. [2018-11-12 19:08:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2694 states. [2018-11-12 19:08:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3777 transitions. [2018-11-12 19:08:17,763 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3777 transitions. Word has length 291 [2018-11-12 19:08:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:08:17,764 INFO L480 AbstractCegarLoop]: Abstraction has 2694 states and 3777 transitions. [2018-11-12 19:08:17,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:08:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3777 transitions. [2018-11-12 19:08:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-12 19:08:17,772 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:08:17,773 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:08:17,773 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:08:17,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1239734922, now seen corresponding path program 1 times [2018-11-12 19:08:17,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:08:17,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:17,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:08:17,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:17,775 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:08:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:08:18,565 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 19:08:18,957 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:08:19,418 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 19:08:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 278 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:08:19,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:08:19,832 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:08:19,832 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-11-12 19:08:19,832 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:08:19,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:08:19,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:08:19,869 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:08:19,980 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:08:19,981 INFO L272 AbstractInterpreter]: Visited 120 different actions 234 times. Merged at 5 different actions 5 times. Never widened. Performed 2131 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2131 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:08:19,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:19,985 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:20,331 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 78.17% of their original sizes. [2018-11-12 19:08:20,331 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:20,890 INFO L415 sIntCurrentIteration]: We unified 316 AI predicates to 316 [2018-11-12 19:08:20,890 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:20,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:20,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [14] total 30 [2018-11-12 19:08:20,891 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:20,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:08:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:08:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:08:20,892 INFO L87 Difference]: Start difference. First operand 2694 states and 3777 transitions. Second operand 18 states. [2018-11-12 19:08:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:08:37,341 INFO L93 Difference]: Finished difference Result 4853 states and 7072 transitions. [2018-11-12 19:08:37,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:08:37,342 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 317 [2018-11-12 19:08:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:08:37,355 INFO L225 Difference]: With dead ends: 4853 [2018-11-12 19:08:37,355 INFO L226 Difference]: Without dead ends: 3067 [2018-11-12 19:08:37,363 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 336 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=269, Invalid=1137, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 19:08:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2018-11-12 19:08:37,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 3062. [2018-11-12 19:08:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2018-11-12 19:08:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4173 transitions. [2018-11-12 19:08:37,434 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4173 transitions. Word has length 317 [2018-11-12 19:08:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:08:37,434 INFO L480 AbstractCegarLoop]: Abstraction has 3062 states and 4173 transitions. [2018-11-12 19:08:37,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:08:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4173 transitions. [2018-11-12 19:08:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-11-12 19:08:37,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:08:37,444 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:08:37,445 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:08:37,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:37,445 INFO L82 PathProgramCache]: Analyzing trace with hash 806701890, now seen corresponding path program 1 times [2018-11-12 19:08:37,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:08:37,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:37,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:08:37,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:37,447 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:08:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:08:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 191 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:08:38,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:08:38,120 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:08:38,121 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 328 with the following transitions: [2018-11-12 19:08:38,121 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [698], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:08:38,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:08:38,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:08:38,158 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:08:38,307 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:08:38,307 INFO L272 AbstractInterpreter]: Visited 130 different actions 253 times. Merged at 4 different actions 4 times. Never widened. Performed 3311 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3311 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:08:38,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:38,316 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:38,718 INFO L227 lantSequenceWeakener]: Weakened 100 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-12 19:08:38,719 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:39,286 INFO L415 sIntCurrentIteration]: We unified 326 AI predicates to 326 [2018-11-12 19:08:39,286 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:39,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:39,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [13] total 31 [2018-11-12 19:08:39,287 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:39,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:08:39,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:08:39,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:08:39,288 INFO L87 Difference]: Start difference. First operand 3062 states and 4173 transitions. Second operand 20 states. [2018-11-12 19:08:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:08:56,155 INFO L93 Difference]: Finished difference Result 5653 states and 8006 transitions. [2018-11-12 19:08:56,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:08:56,155 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 327 [2018-11-12 19:08:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:08:56,178 INFO L225 Difference]: With dead ends: 5653 [2018-11-12 19:08:56,178 INFO L226 Difference]: Without dead ends: 3867 [2018-11-12 19:08:56,186 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 333 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2018-11-12 19:08:56,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2018-11-12 19:08:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3407. [2018-11-12 19:08:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3407 states. [2018-11-12 19:08:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4534 transitions. [2018-11-12 19:08:56,287 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4534 transitions. Word has length 327 [2018-11-12 19:08:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:08:56,288 INFO L480 AbstractCegarLoop]: Abstraction has 3407 states and 4534 transitions. [2018-11-12 19:08:56,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:08:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4534 transitions. [2018-11-12 19:08:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-12 19:08:56,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:08:56,303 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:08:56,304 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:08:56,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:56,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1909640393, now seen corresponding path program 1 times [2018-11-12 19:08:56,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:08:56,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:56,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:08:56,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:56,306 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:08:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:08:56,868 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:08:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 191 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:08:57,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:08:57,915 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:08:57,916 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 353 with the following transitions: [2018-11-12 19:08:57,916 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:08:57,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:08:57,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:08:57,955 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:08:58,269 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:08:58,269 INFO L272 AbstractInterpreter]: Visited 155 different actions 303 times. Merged at 4 different actions 4 times. Never widened. Performed 4205 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4205 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:08:58,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:58,307 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:58,970 INFO L227 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 77.72% of their original sizes. [2018-11-12 19:08:58,971 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:59,559 INFO L415 sIntCurrentIteration]: We unified 351 AI predicates to 351 [2018-11-12 19:08:59,559 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:59,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:59,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [13] total 31 [2018-11-12 19:08:59,560 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:59,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:08:59,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:08:59,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:08:59,561 INFO L87 Difference]: Start difference. First operand 3407 states and 4534 transitions. Second operand 20 states. [2018-11-12 19:09:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:21,105 INFO L93 Difference]: Finished difference Result 5995 states and 8366 transitions. [2018-11-12 19:09:21,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:09:21,105 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 352 [2018-11-12 19:09:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:21,120 INFO L225 Difference]: With dead ends: 5995 [2018-11-12 19:09:21,121 INFO L226 Difference]: Without dead ends: 4209 [2018-11-12 19:09:21,127 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 358 GetRequests, 327 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2018-11-12 19:09:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2018-11-12 19:09:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 3748. [2018-11-12 19:09:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3748 states. [2018-11-12 19:09:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 4893 transitions. [2018-11-12 19:09:21,216 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 4893 transitions. Word has length 352 [2018-11-12 19:09:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:21,217 INFO L480 AbstractCegarLoop]: Abstraction has 3748 states and 4893 transitions. [2018-11-12 19:09:21,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:09:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 4893 transitions. [2018-11-12 19:09:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-12 19:09:21,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:21,229 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:09:21,229 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:21,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1138346898, now seen corresponding path program 1 times [2018-11-12 19:09:21,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:21,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:21,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:21,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:21,231 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:21,545 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:09:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 252 proven. 77 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 19:09:21,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:21,873 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:21,873 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-12 19:09:21,873 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:21,875 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:21,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:22,003 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:22,111 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:22,111 INFO L272 AbstractInterpreter]: Visited 120 different actions 360 times. Merged at 7 different actions 22 times. Never widened. Performed 3475 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3475 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:09:22,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:22,113 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:22,398 INFO L227 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 80.25% of their original sizes. [2018-11-12 19:09:22,399 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:22,538 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-12 19:09:22,539 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:22,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:22,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-12 19:09:22,539 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:22,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:09:22,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:09:22,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:09:22,540 INFO L87 Difference]: Start difference. First operand 3748 states and 4893 transitions. Second operand 11 states. [2018-11-12 19:09:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:31,508 INFO L93 Difference]: Finished difference Result 6494 states and 9309 transitions. [2018-11-12 19:09:31,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 19:09:31,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 353 [2018-11-12 19:09:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:31,523 INFO L225 Difference]: With dead ends: 6494 [2018-11-12 19:09:31,523 INFO L226 Difference]: Without dead ends: 4708 [2018-11-12 19:09:31,531 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 363 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:09:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2018-11-12 19:09:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4315. [2018-11-12 19:09:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2018-11-12 19:09:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5644 transitions. [2018-11-12 19:09:31,633 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5644 transitions. Word has length 353 [2018-11-12 19:09:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:31,634 INFO L480 AbstractCegarLoop]: Abstraction has 4315 states and 5644 transitions. [2018-11-12 19:09:31,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:09:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5644 transitions. [2018-11-12 19:09:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-11-12 19:09:31,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:31,654 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:09:31,654 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:31,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash 398913046, now seen corresponding path program 1 times [2018-11-12 19:09:31,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:31,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:31,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:31,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:31,656 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 191 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:09:32,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:32,644 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:32,644 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 366 with the following transitions: [2018-11-12 19:09:32,644 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [850], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:32,646 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:32,647 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:32,678 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:32,857 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:32,857 INFO L272 AbstractInterpreter]: Visited 168 different actions 329 times. Merged at 4 different actions 4 times. Never widened. Performed 3491 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3491 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:09:32,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:32,863 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:33,240 INFO L227 lantSequenceWeakener]: Weakened 100 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-12 19:09:33,240 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:33,731 INFO L415 sIntCurrentIteration]: We unified 364 AI predicates to 364 [2018-11-12 19:09:33,731 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:33,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:33,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [13] total 33 [2018-11-12 19:09:33,732 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:33,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:09:33,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:09:33,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:09:33,733 INFO L87 Difference]: Start difference. First operand 4315 states and 5644 transitions. Second operand 22 states. [2018-11-12 19:09:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:56,326 INFO L93 Difference]: Finished difference Result 7654 states and 10429 transitions. [2018-11-12 19:09:56,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 19:09:56,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 365 [2018-11-12 19:09:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:56,344 INFO L225 Difference]: With dead ends: 7654 [2018-11-12 19:09:56,344 INFO L226 Difference]: Without dead ends: 5118 [2018-11-12 19:09:56,352 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 373 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2018-11-12 19:09:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-11-12 19:09:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 4669. [2018-11-12 19:09:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4669 states. [2018-11-12 19:09:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 6016 transitions. [2018-11-12 19:09:56,447 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 6016 transitions. Word has length 365 [2018-11-12 19:09:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:56,448 INFO L480 AbstractCegarLoop]: Abstraction has 4669 states and 6016 transitions. [2018-11-12 19:09:56,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 19:09:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 6016 transitions. [2018-11-12 19:09:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-11-12 19:09:56,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:56,462 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:09:56,462 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:56,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:56,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1621659710, now seen corresponding path program 1 times [2018-11-12 19:09:56,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:56,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:56,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:56,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:56,464 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:56,962 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 19:09:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 189 proven. 155 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:09:57,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:57,430 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:57,430 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-11-12 19:09:57,430 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [898], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:57,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:57,434 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:57,472 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:57,676 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:57,676 INFO L272 AbstractInterpreter]: Visited 180 different actions 353 times. Merged at 4 different actions 4 times. Never widened. Performed 3758 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3758 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:09:57,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:57,686 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:58,095 INFO L227 lantSequenceWeakener]: Weakened 100 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-12 19:09:58,095 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:58,573 INFO L415 sIntCurrentIteration]: We unified 376 AI predicates to 376 [2018-11-12 19:09:58,574 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:58,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:58,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [14] total 34 [2018-11-12 19:09:58,575 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:58,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:09:58,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:09:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:09:58,577 INFO L87 Difference]: Start difference. First operand 4669 states and 6016 transitions. Second operand 22 states. [2018-11-12 19:10:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:18,477 INFO L93 Difference]: Finished difference Result 8007 states and 10800 transitions. [2018-11-12 19:10:18,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 19:10:18,477 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 377 [2018-11-12 19:10:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:18,490 INFO L225 Difference]: With dead ends: 8007 [2018-11-12 19:10:18,490 INFO L226 Difference]: Without dead ends: 5471 [2018-11-12 19:10:18,498 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 385 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2018-11-12 19:10:18,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2018-11-12 19:10:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 5021. [2018-11-12 19:10:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5021 states. [2018-11-12 19:10:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 6386 transitions. [2018-11-12 19:10:18,589 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 6386 transitions. Word has length 377 [2018-11-12 19:10:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:18,589 INFO L480 AbstractCegarLoop]: Abstraction has 5021 states and 6386 transitions. [2018-11-12 19:10:18,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 19:10:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 6386 transitions. [2018-11-12 19:10:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-11-12 19:10:18,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:18,607 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-12 19:10:18,608 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:18,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:18,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1978847440, now seen corresponding path program 1 times [2018-11-12 19:10:18,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:18,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:18,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:18,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:18,609 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 245 proven. 155 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-11-12 19:10:18,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:18,979 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:10:18,979 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 403 with the following transitions: [2018-11-12 19:10:18,979 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:10:18,981 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:10:18,981 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:10:19,010 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:10:19,208 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:10:19,208 INFO L272 AbstractInterpreter]: Visited 121 different actions 361 times. Merged at 7 different actions 20 times. Never widened. Performed 3721 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3721 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:10:19,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:19,218 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:10:19,596 INFO L227 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 77.66% of their original sizes. [2018-11-12 19:10:19,596 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:10:19,912 INFO L415 sIntCurrentIteration]: We unified 401 AI predicates to 401 [2018-11-12 19:10:19,913 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:10:19,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:10:19,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 19:10:19,913 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:19,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:10:19,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:10:19,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:10:19,915 INFO L87 Difference]: Start difference. First operand 5021 states and 6386 transitions. Second operand 17 states. [2018-11-12 19:10:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:41,409 INFO L93 Difference]: Finished difference Result 9503 states and 12398 transitions. [2018-11-12 19:10:41,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:10:41,409 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 402 [2018-11-12 19:10:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:41,423 INFO L225 Difference]: With dead ends: 9503 [2018-11-12 19:10:41,423 INFO L226 Difference]: Without dead ends: 6430 [2018-11-12 19:10:41,432 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 415 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2018-11-12 19:10:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6430 states. [2018-11-12 19:10:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6430 to 6140. [2018-11-12 19:10:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6140 states. [2018-11-12 19:10:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 7603 transitions. [2018-11-12 19:10:41,538 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 7603 transitions. Word has length 402 [2018-11-12 19:10:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:41,539 INFO L480 AbstractCegarLoop]: Abstraction has 6140 states and 7603 transitions. [2018-11-12 19:10:41,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:10:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 7603 transitions. [2018-11-12 19:10:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-11-12 19:10:41,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:41,553 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-12 19:10:41,553 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:41,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:41,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1793201698, now seen corresponding path program 1 times [2018-11-12 19:10:41,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:41,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:41,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:41,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:41,554 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-12 19:10:41,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:41,912 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:10:41,912 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 439 with the following transitions: [2018-11-12 19:10:41,912 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:10:41,914 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:10:41,914 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:10:42,182 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:10:42,293 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:10:42,294 INFO L272 AbstractInterpreter]: Visited 122 different actions 485 times. Merged at 8 different actions 33 times. Never widened. Performed 5729 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5729 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:10:42,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:42,310 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:10:42,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:42,310 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:10:42,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:42,320 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:10:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:42,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:10:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-12 19:10:43,277 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:10:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-12 19:10:43,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:10:43,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 19:10:43,866 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:10:43,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:10:43,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:10:43,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:10:43,868 INFO L87 Difference]: Start difference. First operand 6140 states and 7603 transitions. Second operand 9 states. [2018-11-12 19:10:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:51,244 INFO L93 Difference]: Finished difference Result 14219 states and 20312 transitions. [2018-11-12 19:10:51,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-12 19:10:51,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 438 [2018-11-12 19:10:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:51,273 INFO L225 Difference]: With dead ends: 14219 [2018-11-12 19:10:51,273 INFO L226 Difference]: Without dead ends: 6028 [2018-11-12 19:10:51,300 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 904 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=469, Invalid=1883, Unknown=0, NotChecked=0, Total=2352 [2018-11-12 19:10:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2018-11-12 19:10:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 5686. [2018-11-12 19:10:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5686 states. [2018-11-12 19:10:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 7894 transitions. [2018-11-12 19:10:51,472 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 7894 transitions. Word has length 438 [2018-11-12 19:10:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:51,473 INFO L480 AbstractCegarLoop]: Abstraction has 5686 states and 7894 transitions. [2018-11-12 19:10:51,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:10:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 7894 transitions. [2018-11-12 19:10:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-11-12 19:10:51,488 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:51,489 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-12 19:10:51,489 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:51,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:51,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1111783655, now seen corresponding path program 1 times [2018-11-12 19:10:51,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:51,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:51,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:51,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:51,491 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 531 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-11-12 19:10:52,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:52,176 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:10:52,177 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 523 with the following transitions: [2018-11-12 19:10:52,177 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:10:52,179 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:10:52,179 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:10:52,303 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:10:52,613 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:10:52,613 INFO L272 AbstractInterpreter]: Visited 123 different actions 609 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Performed 6195 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6195 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:10:52,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:52,623 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:10:52,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:52,623 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:10:52,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:52,633 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:10:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:52,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:10:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 531 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-11-12 19:10:53,277 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:10:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 531 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-11-12 19:10:53,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:10:53,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-12 19:10:53,533 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:10:53,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:10:53,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:10:53,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-12 19:10:53,534 INFO L87 Difference]: Start difference. First operand 5686 states and 7894 transitions. Second operand 10 states. Received shutdown request... [2018-11-12 19:10:55,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 19:10:55,706 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:10:55,713 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:10:55,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:10:55 BoogieIcfgContainer [2018-11-12 19:10:55,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:10:55,714 INFO L168 Benchmark]: Toolchain (without parser) took 223431.16 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-12 19:10:55,716 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-12 19:10:55,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:55,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:55,718 INFO L168 Benchmark]: Boogie Preprocessor took 113.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:10:55,718 INFO L168 Benchmark]: RCFGBuilder took 3842.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.6 MB). Peak memory consumption was 129.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:10:55,719 INFO L168 Benchmark]: TraceAbstraction took 218447.49 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-12 19:10:55,723 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 863.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 158.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.44 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3842.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.6 MB). Peak memory consumption was 129.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218447.49 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (5686states) and FLOYD_HOARE automaton (currently 11 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (2907 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 218.3s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 189.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2267 SDtfs, 28449 SDslu, 2724 SDs, 0 SdLazy, 37350 SolverSat, 4175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.6s Time, PredicateUnifierStatistics: 18 DeclaredPredicates, 5100 GetRequests, 4788 SyntacticMatches, 17 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2248 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6140occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.5s AbstIntTime, 11 AbstIntIterations, 9 AbstIntStrong, 0.9970167844295145 AbsIntWeakeningRatio, 0.09661187520966119 AbsIntAvgWeakeningVarsNumRemoved, 15.28279100972828 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 3155 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 5211 NumberOfCodeBlocks, 5211 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6153 ConstructedInterpolants, 0 QuantifiedInterpolants, 10280160 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1519 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 7473/8555 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown