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/Problem17_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:35:59,387 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:35:59,389 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:35:59,408 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:35:59,408 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:35:59,410 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:35:59,411 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:35:59,416 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:35:59,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:35:59,420 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:35:59,421 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:35:59,421 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:35:59,423 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:35:59,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:35:59,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:35:59,426 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:35:59,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:35:59,436 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:35:59,438 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:35:59,439 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:35:59,440 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:35:59,442 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:35:59,444 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:35:59,444 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:35:59,445 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:35:59,445 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:35:59,446 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:35:59,447 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:35:59,448 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:35:59,449 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:35:59,449 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:35:59,450 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:35:59,450 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:35:59,450 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:35:59,451 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:35:59,452 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:35:59,452 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 19:35:59,480 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:35:59,481 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:35:59,481 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:35:59,482 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:35:59,482 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:35:59,482 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:35:59,482 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:35:59,483 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:35:59,483 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:35:59,483 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:35:59,483 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:35:59,483 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:35:59,484 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:35:59,484 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:35:59,485 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:35:59,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:35:59,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:35:59,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:35:59,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:35:59,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:35:59,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:35:59,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:35:59,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:35:59,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:35:59,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:35:59,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:35:59,489 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:35:59,489 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:35:59,489 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:35:59,489 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:35:59,490 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:35:59,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:35:59,490 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:35:59,490 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:35:59,491 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:35:59,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:35:59,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:35:59,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:35:59,553 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:35:59,553 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:35:59,554 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-11-12 19:35:59,622 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a795cc7/e73e2510474141208adf200133cfb3b0/FLAG6da6fbbb8 [2018-11-12 19:36:00,280 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:36:00,281 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-11-12 19:36:00,306 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a795cc7/e73e2510474141208adf200133cfb3b0/FLAG6da6fbbb8 [2018-11-12 19:36:00,326 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a795cc7/e73e2510474141208adf200133cfb3b0 [2018-11-12 19:36:00,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:36:00,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:36:00,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:36:00,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:36:00,345 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:36:00,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:36:00" (1/1) ... [2018-11-12 19:36:00,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aefa37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:00, skipping insertion in model container [2018-11-12 19:36:00,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:36:00" (1/1) ... [2018-11-12 19:36:00,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:36:00,492 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:36:01,503 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:36:01,509 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:36:01,951 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:36:01,973 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:36:01,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01 WrapperNode [2018-11-12 19:36:01,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:36:01,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:36:01,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:36:01,975 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:36:02,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:36:02,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:36:02,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:36:02,226 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:36:02,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (1/1) ... [2018-11-12 19:36:02,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:36:02,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:36:02,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:36:02,430 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:36:02,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (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 19:36:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:36:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:36:02,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:36:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:36:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:36:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:36:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:36:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:36:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:36:02,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:36:02,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:36:10,529 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:36:10,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:36:10 BoogieIcfgContainer [2018-11-12 19:36:10,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:36:10,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:36:10,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:36:10,535 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:36:10,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:36:00" (1/3) ... [2018-11-12 19:36:10,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fabd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:36:10, skipping insertion in model container [2018-11-12 19:36:10,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:01" (2/3) ... [2018-11-12 19:36:10,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fabd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:36:10, skipping insertion in model container [2018-11-12 19:36:10,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:36:10" (3/3) ... [2018-11-12 19:36:10,538 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47_true-unreach-call.c [2018-11-12 19:36:10,547 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:36:10,555 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:36:10,570 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:36:10,625 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:36:10,625 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:36:10,626 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:36:10,626 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:36:10,626 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:36:10,626 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:36:10,626 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:36:10,626 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:36:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-12 19:36:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-12 19:36:10,673 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:36:10,674 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:36:10,676 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:36:10,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash -572495578, now seen corresponding path program 1 times [2018-11-12 19:36:10,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:36:10,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:10,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:10,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:10,734 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:36:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:11,254 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-12 19:36:11,267 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 19:36:11,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:36:11,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:36:11,271 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:36:11,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:36:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:36:11,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:36:11,296 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-12 19:36:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:36:23,062 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-12 19:36:23,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:36:23,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-11-12 19:36:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:36:23,110 INFO L225 Difference]: With dead ends: 2164 [2018-11-12 19:36:23,110 INFO L226 Difference]: Without dead ends: 1554 [2018-11-12 19:36:23,120 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:36:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-12 19:36:23,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1051. [2018-11-12 19:36:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2018-11-12 19:36:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1880 transitions. [2018-11-12 19:36:23,250 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1880 transitions. Word has length 51 [2018-11-12 19:36:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:36:23,251 INFO L480 AbstractCegarLoop]: Abstraction has 1051 states and 1880 transitions. [2018-11-12 19:36:23,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:36:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1880 transitions. [2018-11-12 19:36:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-12 19:36:23,261 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:36:23,262 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:23,262 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:36:23,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:23,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1304014569, now seen corresponding path program 1 times [2018-11-12 19:36:23,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:36:23,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:23,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:23,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:23,264 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:36:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:23,559 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:36:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:23,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:36:23,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:36:23,592 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:36:23,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:36:23,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:36:23,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:36:23,595 INFO L87 Difference]: Start difference. First operand 1051 states and 1880 transitions. Second operand 5 states. [2018-11-12 19:36:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:36:30,146 INFO L93 Difference]: Finished difference Result 3028 states and 5532 transitions. [2018-11-12 19:36:30,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:36:30,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-11-12 19:36:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:36:30,168 INFO L225 Difference]: With dead ends: 3028 [2018-11-12 19:36:30,168 INFO L226 Difference]: Without dead ends: 1983 [2018-11-12 19:36:30,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:36:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2018-11-12 19:36:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1957. [2018-11-12 19:36:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-12 19:36:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3236 transitions. [2018-11-12 19:36:30,267 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3236 transitions. Word has length 123 [2018-11-12 19:36:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:36:30,268 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3236 transitions. [2018-11-12 19:36:30,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:36:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3236 transitions. [2018-11-12 19:36:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-12 19:36:30,281 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:36:30,281 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:30,282 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:36:30,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:30,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2080151345, now seen corresponding path program 1 times [2018-11-12 19:36:30,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:36:30,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:30,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:30,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:30,289 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:36:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:30,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:36:30,698 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:36:30,699 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2018-11-12 19:36:30,702 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:36:30,749 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:36:30,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:36:31,223 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:36:31,932 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:36:31,933 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Performed 3901 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3901 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:36:31,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:31,979 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:36:31,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:36:31,980 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 19:36:31,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:31,998 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:36:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:32,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:36:35,649 WARN L179 SmtUtils]: Spent 3.06 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-12 19:36:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:35,839 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:36:36,127 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-12 19:36:36,231 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-12 19:36:36,536 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 13 [2018-11-12 19:36:37,100 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-11-12 19:36:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:37,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:36:37,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-12 19:36:37,461 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:36:37,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:36:37,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:36:37,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:36:37,465 INFO L87 Difference]: Start difference. First operand 1957 states and 3236 transitions. Second operand 6 states. [2018-11-12 19:36:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:36:49,711 INFO L93 Difference]: Finished difference Result 7514 states and 12887 transitions. [2018-11-12 19:36:49,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 19:36:49,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-12 19:36:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:36:49,750 INFO L225 Difference]: With dead ends: 7514 [2018-11-12 19:36:49,751 INFO L226 Difference]: Without dead ends: 5563 [2018-11-12 19:36:49,767 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:36:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2018-11-12 19:36:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5553. [2018-11-12 19:36:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2018-11-12 19:36:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 9337 transitions. [2018-11-12 19:36:49,949 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 9337 transitions. Word has length 126 [2018-11-12 19:36:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:36:49,950 INFO L480 AbstractCegarLoop]: Abstraction has 5553 states and 9337 transitions. [2018-11-12 19:36:49,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:36:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 9337 transitions. [2018-11-12 19:36:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-12 19:36:49,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:36:49,955 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:49,955 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:36:49,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:49,956 INFO L82 PathProgramCache]: Analyzing trace with hash 486218423, now seen corresponding path program 1 times [2018-11-12 19:36:49,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:36:49,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:49,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:49,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:49,957 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:36:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:50,232 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:36:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:50,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:36:50,894 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:36:50,895 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-11-12 19:36:50,895 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:36:50,904 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:36:50,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:36:51,051 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:36:51,611 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:36:51,611 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Performed 4214 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4214 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:36:51,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:51,639 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:36:51,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:36:51,639 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 19:36:51,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:51,655 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:36:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:51,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:36:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:51,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:36:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:52,232 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:36:52,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-12 19:36:52,232 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:36:52,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:36:52,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:36:52,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:36:52,234 INFO L87 Difference]: Start difference. First operand 5553 states and 9337 transitions. Second operand 3 states. [2018-11-12 19:36:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:36:55,598 INFO L93 Difference]: Finished difference Result 13722 states and 22947 transitions. [2018-11-12 19:36:55,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:36:55,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2018-11-12 19:36:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:36:55,646 INFO L225 Difference]: With dead ends: 13722 [2018-11-12 19:36:55,646 INFO L226 Difference]: Without dead ends: 8175 [2018-11-12 19:36:55,681 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:36:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2018-11-12 19:36:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 8174. [2018-11-12 19:36:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8174 states. [2018-11-12 19:36:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 12761 transitions. [2018-11-12 19:36:55,923 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 12761 transitions. Word has length 139 [2018-11-12 19:36:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:36:55,924 INFO L480 AbstractCegarLoop]: Abstraction has 8174 states and 12761 transitions. [2018-11-12 19:36:55,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:36:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 12761 transitions. [2018-11-12 19:36:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-12 19:36:55,933 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:36:55,934 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:36:55,934 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:36:55,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:55,934 INFO L82 PathProgramCache]: Analyzing trace with hash 661531126, now seen corresponding path program 1 times [2018-11-12 19:36:55,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:36:55,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:55,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:55,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:36:55,936 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:36:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:56,225 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:36:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:36:56,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:36:56,691 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:36:56,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-12 19:36:56,692 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:36:56,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:36:56,701 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:36:56,794 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:36:57,357 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:36:57,357 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Performed 5326 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5326 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:36:57,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:36:57,394 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:36:57,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:36:57,394 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:36:57,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:36:57,410 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:36:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:36:57,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:36:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:57,915 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:36:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:36:58,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:36:58,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 19:36:58,400 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:36:58,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:36:58,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:36:58,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:36:58,401 INFO L87 Difference]: Start difference. First operand 8174 states and 12761 transitions. Second operand 9 states. [2018-11-12 19:37:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:04,388 INFO L93 Difference]: Finished difference Result 16001 states and 25145 transitions. [2018-11-12 19:37:04,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 19:37:04,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 224 [2018-11-12 19:37:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:04,423 INFO L225 Difference]: With dead ends: 16001 [2018-11-12 19:37:04,423 INFO L226 Difference]: Without dead ends: 6863 [2018-11-12 19:37:04,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 446 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:37:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6863 states. [2018-11-12 19:37:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6863 to 6830. [2018-11-12 19:37:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6830 states. [2018-11-12 19:37:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 8191 transitions. [2018-11-12 19:37:04,601 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 8191 transitions. Word has length 224 [2018-11-12 19:37:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:04,602 INFO L480 AbstractCegarLoop]: Abstraction has 6830 states and 8191 transitions. [2018-11-12 19:37:04,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:37:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 8191 transitions. [2018-11-12 19:37:04,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-12 19:37:04,609 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:04,610 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:37:04,610 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:04,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:04,610 INFO L82 PathProgramCache]: Analyzing trace with hash -478946251, now seen corresponding path program 1 times [2018-11-12 19:37:04,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:04,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:04,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:04,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:04,612 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 89 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-12 19:37:05,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:05,279 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:37:05,280 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-11-12 19:37:05,281 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1692], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:37:05,287 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:37:05,287 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:37:05,369 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:37:06,328 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:37:06,329 INFO L272 AbstractInterpreter]: Visited 175 different actions 511 times. Merged at 5 different actions 9 times. Never widened. Performed 8629 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8629 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:37:06,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:06,372 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:37:06,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:06,372 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:37:06,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:06,384 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:37:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:06,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:37:06,958 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-11-12 19:37:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-12 19:37:07,131 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:37:08,141 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-12 19:37:08,423 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2018-11-12 19:37:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:10,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:37:10,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 21 [2018-11-12 19:37:10,139 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:10,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:37:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:37:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:37:10,141 INFO L87 Difference]: Start difference. First operand 6830 states and 8191 transitions. Second operand 7 states. [2018-11-12 19:37:30,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:30,206 INFO L93 Difference]: Finished difference Result 18649 states and 22804 transitions. [2018-11-12 19:37:30,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 19:37:30,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2018-11-12 19:37:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:30,238 INFO L225 Difference]: With dead ends: 18649 [2018-11-12 19:37:30,238 INFO L226 Difference]: Without dead ends: 11386 [2018-11-12 19:37:30,252 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 599 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2018-11-12 19:37:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11386 states. [2018-11-12 19:37:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11386 to 10001. [2018-11-12 19:37:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10001 states. [2018-11-12 19:37:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10001 states to 10001 states and 11860 transitions. [2018-11-12 19:37:30,445 INFO L78 Accepts]: Start accepts. Automaton has 10001 states and 11860 transitions. Word has length 305 [2018-11-12 19:37:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:30,446 INFO L480 AbstractCegarLoop]: Abstraction has 10001 states and 11860 transitions. [2018-11-12 19:37:30,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:37:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10001 states and 11860 transitions. [2018-11-12 19:37:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-11-12 19:37:30,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:30,460 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:30,460 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:30,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:30,460 INFO L82 PathProgramCache]: Analyzing trace with hash -620484572, now seen corresponding path program 1 times [2018-11-12 19:37:30,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:30,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:30,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:30,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:30,462 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:31,199 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:37:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 138 proven. 240 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-12 19:37:31,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:31,452 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:37:31,452 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 409 with the following transitions: [2018-11-12 19:37:31,453 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1692], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:37:31,457 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:37:31,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:37:31,527 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:37:32,311 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:37:32,312 INFO L272 AbstractInterpreter]: Visited 176 different actions 514 times. Merged at 5 different actions 9 times. Never widened. Performed 8650 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8650 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:37:32,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:32,355 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:37:32,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:32,357 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:37:32,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:32,374 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:37:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:32,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:37:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 283 proven. 55 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-12 19:37:33,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:37:34,059 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-11-12 19:37:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 142 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:37:34,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:37:34,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 19 [2018-11-12 19:37:34,507 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:37:34,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 19:37:34,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 19:37:34,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:37:34,509 INFO L87 Difference]: Start difference. First operand 10001 states and 11860 transitions. Second operand 13 states. [2018-11-12 19:38:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:13,761 INFO L93 Difference]: Finished difference Result 52045 states and 69783 transitions. [2018-11-12 19:38:13,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-11-12 19:38:13,764 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 408 [2018-11-12 19:38:13,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:13,993 INFO L225 Difference]: With dead ends: 52045 [2018-11-12 19:38:13,994 INFO L226 Difference]: Without dead ends: 42050 [2018-11-12 19:38:14,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 842 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1181, Invalid=4369, Unknown=0, NotChecked=0, Total=5550 [2018-11-12 19:38:14,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42050 states. [2018-11-12 19:38:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42050 to 36690. [2018-11-12 19:38:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36690 states. [2018-11-12 19:38:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36690 states to 36690 states and 47036 transitions. [2018-11-12 19:38:15,164 INFO L78 Accepts]: Start accepts. Automaton has 36690 states and 47036 transitions. Word has length 408 [2018-11-12 19:38:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:15,164 INFO L480 AbstractCegarLoop]: Abstraction has 36690 states and 47036 transitions. [2018-11-12 19:38:15,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 19:38:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 36690 states and 47036 transitions. [2018-11-12 19:38:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-11-12 19:38:15,184 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:15,185 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:15,185 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:15,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash -519986993, now seen corresponding path program 1 times [2018-11-12 19:38:15,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:15,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:15,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,187 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 138 proven. 192 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-12 19:38:15,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:15,797 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:15,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-11-12 19:38:15,797 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1758], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:38:15,801 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:15,801 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:15,878 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:38:18,237 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:38:18,238 INFO L272 AbstractInterpreter]: Visited 189 different actions 1311 times. Merged at 8 different actions 55 times. Widened at 1 different actions 2 times. Performed 24296 root evaluator evaluations with a maximum evaluation depth of 6. Performed 24296 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 13 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 19:38:18,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:18,250 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:38:18,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:18,250 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:38:18,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:18,260 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:38:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:18,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:38:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 19:38:18,874 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:38:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 19:38:19,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:38:19,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-12 19:38:19,449 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:38:19,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:38:19,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:38:19,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-12 19:38:19,450 INFO L87 Difference]: Start difference. First operand 36690 states and 47036 transitions. Second operand 10 states. [2018-11-12 19:38:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:33,363 INFO L93 Difference]: Finished difference Result 117243 states and 153277 transitions. [2018-11-12 19:38:33,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:38:33,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 426 [2018-11-12 19:38:33,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:33,665 INFO L225 Difference]: With dead ends: 117243 [2018-11-12 19:38:33,665 INFO L226 Difference]: Without dead ends: 72146 [2018-11-12 19:38:33,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 863 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2018-11-12 19:38:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72146 states. [2018-11-12 19:38:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72146 to 61058. [2018-11-12 19:38:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61058 states. [2018-11-12 19:38:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61058 states to 61058 states and 76773 transitions. [2018-11-12 19:38:35,854 INFO L78 Accepts]: Start accepts. Automaton has 61058 states and 76773 transitions. Word has length 426 [2018-11-12 19:38:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:35,855 INFO L480 AbstractCegarLoop]: Abstraction has 61058 states and 76773 transitions. [2018-11-12 19:38:35,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:38:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 61058 states and 76773 transitions. [2018-11-12 19:38:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-11-12 19:38:35,881 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:35,882 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:35,882 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:35,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:35,883 INFO L82 PathProgramCache]: Analyzing trace with hash -957097124, now seen corresponding path program 1 times [2018-11-12 19:38:35,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:35,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:35,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:35,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:35,884 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 7 proven. 206 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2018-11-12 19:38:36,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:36,534 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:36,535 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 496 with the following transitions: [2018-11-12 19:38:36,535 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1692], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:38:36,538 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:36,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:36,591 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:38:38,314 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:38:38,314 INFO L272 AbstractInterpreter]: Visited 177 different actions 1069 times. Merged at 9 different actions 63 times. Widened at 1 different actions 2 times. Performed 20577 root evaluator evaluations with a maximum evaluation depth of 6. Performed 20577 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 14 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:38:38,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:38,320 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:38:38,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:38,320 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:38:38,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:38,329 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:38:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:38,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:38:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 418 proven. 42 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-12 19:38:39,682 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:38:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 458 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-12 19:38:40,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:38:40,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2018-11-12 19:38:40,761 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:38:40,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 19:38:40,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 19:38:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:38:40,763 INFO L87 Difference]: Start difference. First operand 61058 states and 76773 transitions. Second operand 13 states. [2018-11-12 19:39:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:10,710 INFO L93 Difference]: Finished difference Result 170942 states and 224345 transitions. [2018-11-12 19:39:10,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 19:39:10,711 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 495 [2018-11-12 19:39:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:11,218 INFO L225 Difference]: With dead ends: 170942 [2018-11-12 19:39:11,218 INFO L226 Difference]: Without dead ends: 106665 [2018-11-12 19:39:11,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 1000 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:39:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106665 states. [2018-11-12 19:39:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106665 to 99632. [2018-11-12 19:39:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99632 states. [2018-11-12 19:39:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99632 states to 99632 states and 125622 transitions. [2018-11-12 19:39:13,772 INFO L78 Accepts]: Start accepts. Automaton has 99632 states and 125622 transitions. Word has length 495 [2018-11-12 19:39:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:13,773 INFO L480 AbstractCegarLoop]: Abstraction has 99632 states and 125622 transitions. [2018-11-12 19:39:13,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 19:39:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 99632 states and 125622 transitions. [2018-11-12 19:39:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-11-12 19:39:13,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:13,818 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:13,821 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:13,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:13,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1088766146, now seen corresponding path program 1 times [2018-11-12 19:39:13,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:13,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:13,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:13,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:13,822 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:14,214 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 19:39:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 462 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-12 19:39:14,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:14,807 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:39:14,807 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 500 with the following transitions: [2018-11-12 19:39:14,808 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1018], [1020], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1692], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:39:14,811 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:39:14,812 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:39:14,871 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:39:17,440 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:39:17,441 INFO L272 AbstractInterpreter]: Visited 177 different actions 1417 times. Merged at 9 different actions 79 times. Widened at 1 different actions 3 times. Performed 28674 root evaluator evaluations with a maximum evaluation depth of 6. Performed 28674 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 20 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 19:39:17,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:17,453 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:39:17,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:17,453 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:39:17,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:17,463 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:39:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:17,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:39:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-12 19:39:17,934 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:39:18,315 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 19:39:18,344 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-11-12 19:39:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 187 proven. 433 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-12 19:39:19,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:39:19,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2018-11-12 19:39:19,542 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:39:19,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:39:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:39:19,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:39:19,544 INFO L87 Difference]: Start difference. First operand 99632 states and 125622 transitions. Second operand 11 states. Received shutdown request... [2018-11-12 19:39:50,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-12 19:39:50,926 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:39:50,942 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:39:50,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:39:50 BoogieIcfgContainer [2018-11-12 19:39:50,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:39:50,944 INFO L168 Benchmark]: Toolchain (without parser) took 230605.26 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 915.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:39:50,945 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:39:50,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1633.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:39:50,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 250.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:39:50,948 INFO L168 Benchmark]: Boogie Preprocessor took 203.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:39:50,948 INFO L168 Benchmark]: RCFGBuilder took 8100.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 460.1 MB). Peak memory consumption was 460.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:39:50,949 INFO L168 Benchmark]: TraceAbstraction took 220411.67 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 486.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:39:50,954 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1633.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 250.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8100.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 460.1 MB). Peak memory consumption was 460.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220411.67 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 486.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 140). Cancelled while BasicCegarLoop was constructing difference of abstraction (99632states) and FLOYD_HOARE automaton (currently 54 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (38452 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 220.3s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 176.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2546 SDtfs, 35918 SDslu, 4702 SDs, 0 SdLazy, 62321 SolverSat, 8074 SolverUnsat, 408 SolverUnknown, 0 SolverNotchecked, 151.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5576 GetRequests, 5305 SyntacticMatches, 25 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99632occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.6s AbstIntTime, 8 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 25439 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 5418 NumberOfCodeBlocks, 5418 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8014 ConstructedInterpolants, 714 QuantifiedInterpolants, 19401790 SizeOfPredicates, 21 NumberOfNonLiveVariables, 4323 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 6385/8096 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown