java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:10:44,452 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:10:44,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:10:44,471 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:10:44,472 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:10:44,473 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:10:44,474 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:10:44,476 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:10:44,478 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:10:44,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:10:44,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:10:44,480 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:10:44,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:10:44,482 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:10:44,483 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:10:44,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:10:44,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:10:44,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:10:44,489 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:10:44,491 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:10:44,492 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:10:44,493 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:10:44,496 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:10:44,503 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:10:44,503 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:10:44,504 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:10:44,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:10:44,505 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:10:44,525 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:10:44,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:10:44,527 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:10:44,527 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:10:44,527 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:10:44,527 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:10:44,527 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:10:44,528 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:10:44,528 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:10:44,528 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:10:44,528 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:10:44,528 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:10:44,529 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:10:44,529 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:10:44,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:10:44,530 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:10:44,530 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:10:44,530 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:10:44,530 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:10:44,530 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:10:44,531 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:10:44,531 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:10:44,531 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:10:44,531 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:10:44,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:10:44,531 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:10:44,532 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:10:44,532 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:10:44,532 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:10:44,532 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:10:44,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:10:44,533 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:10:44,533 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:10:44,533 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:10:44,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:10:44,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:10:44,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:10:44,627 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:10:44,628 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:10:44,629 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-10-24 22:10:44,700 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e74a522b4/3876bcbb02bc42dfa70f8ddbe9b1d213/FLAG7b884552f [2018-10-24 22:10:45,473 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:10:45,474 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-10-24 22:10:45,503 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e74a522b4/3876bcbb02bc42dfa70f8ddbe9b1d213/FLAG7b884552f [2018-10-24 22:10:45,523 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e74a522b4/3876bcbb02bc42dfa70f8ddbe9b1d213 [2018-10-24 22:10:45,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:10:45,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:10:45,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:10:45,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:10:45,549 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:10:45,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:45" (1/1) ... [2018-10-24 22:10:45,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1086b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:45, skipping insertion in model container [2018-10-24 22:10:45,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:45" (1/1) ... [2018-10-24 22:10:45,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:10:45,687 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:10:46,682 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:10:46,688 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:10:47,108 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:10:47,133 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:10:47,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47 WrapperNode [2018-10-24 22:10:47,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:10:47,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:10:47,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:10:47,135 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:10:47,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:10:47,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:10:47,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:10:47,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:10:47,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... [2018-10-24 22:10:47,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:10:47,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:10:47,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:10:47,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:10:47,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:10:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:10:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:10:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:10:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:10:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:10:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:10:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:10:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:10:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:10:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:10:59,417 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:10:59,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:59 BoogieIcfgContainer [2018-10-24 22:10:59,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:10:59,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:10:59,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:10:59,423 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:10:59,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:10:45" (1/3) ... [2018-10-24 22:10:59,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3b727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:59, skipping insertion in model container [2018-10-24 22:10:59,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:47" (2/3) ... [2018-10-24 22:10:59,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3b727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:59, skipping insertion in model container [2018-10-24 22:10:59,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:59" (3/3) ... [2018-10-24 22:10:59,427 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label36_true-unreach-call.c [2018-10-24 22:10:59,437 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:10:59,447 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:10:59,465 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:10:59,509 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:10:59,509 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:10:59,509 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:10:59,510 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:10:59,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:10:59,510 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:10:59,510 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:10:59,510 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:10:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:10:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-24 22:10:59,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:10:59,562 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:10:59,565 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:10:59,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:10:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1923722508, now seen corresponding path program 1 times [2018-10-24 22:10:59,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:10:59,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:59,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:10:59,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:59,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:10:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:00,156 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 22:11:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:11:00,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:11:00,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:11:00,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:11:00,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:11:00,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:11:00,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:11:00,208 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:11:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:11:11,705 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-10-24 22:11:11,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:11:11,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-10-24 22:11:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:11:11,742 INFO L225 Difference]: With dead ends: 2118 [2018-10-24 22:11:11,743 INFO L226 Difference]: Without dead ends: 1508 [2018-10-24 22:11:11,757 INFO L605 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 [2018-10-24 22:11:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-10-24 22:11:11,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-10-24 22:11:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-24 22:11:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-10-24 22:11:11,887 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 64 [2018-10-24 22:11:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:11:11,888 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-10-24 22:11:11,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:11:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-10-24 22:11:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 22:11:11,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:11:11,898 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:11:11,898 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:11:11,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:11:11,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1151590018, now seen corresponding path program 1 times [2018-10-24 22:11:11,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:11:11,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:11,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:11:11,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:11,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:11:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:11:12,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:11:12,309 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:11:12,311 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-10-24 22:11:12,313 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], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1122], [1124], [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] [2018-10-24 22:11:12,408 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:11:12,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:11:13,899 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:11:34,568 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:11:34,570 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:11:34,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:11:34,625 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:11:34,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:11:34,625 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:11:34,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:11:34,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:11:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:34,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:12:01,650 WARN L179 SmtUtils]: Spent 24.25 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 22:12:21,920 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 22:12:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:22,614 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:12:26,908 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 22:12:26,976 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 22:12:29,483 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 22:12:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:29,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:12:29,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 22:12:29,872 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:29,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:12:29,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:12:29,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-10-24 22:12:29,874 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-10-24 22:13:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:46,292 INFO L93 Difference]: Finished difference Result 3906 states and 6151 transitions. [2018-10-24 22:13:46,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:13:46,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 22:13:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:46,321 INFO L225 Difference]: With dead ends: 3906 [2018-10-24 22:13:46,321 INFO L226 Difference]: Without dead ends: 2873 [2018-10-24 22:13:46,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=52, Invalid=184, Unknown=4, NotChecked=0, Total=240 [2018-10-24 22:13:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2018-10-24 22:13:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2844. [2018-10-24 22:13:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2018-10-24 22:13:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4219 transitions. [2018-10-24 22:13:46,454 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4219 transitions. Word has length 139 [2018-10-24 22:13:46,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:46,455 INFO L481 AbstractCegarLoop]: Abstraction has 2844 states and 4219 transitions. [2018-10-24 22:13:46,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:13:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4219 transitions. [2018-10-24 22:13:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 22:13:46,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:46,464 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:13:46,465 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:46,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:46,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1756750855, now seen corresponding path program 1 times [2018-10-24 22:13:46,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:46,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:46,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:46,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:46,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:46,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:46,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:13:46,775 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:46,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:13:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:13:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:13:46,776 INFO L87 Difference]: Start difference. First operand 2844 states and 4219 transitions. Second operand 4 states. [2018-10-24 22:13:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:55,060 INFO L93 Difference]: Finished difference Result 10478 states and 16151 transitions. [2018-10-24 22:13:55,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:13:55,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-10-24 22:13:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:55,117 INFO L225 Difference]: With dead ends: 10478 [2018-10-24 22:13:55,117 INFO L226 Difference]: Without dead ends: 7640 [2018-10-24 22:13:55,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:13:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2018-10-24 22:13:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 7638. [2018-10-24 22:13:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7638 states. [2018-10-24 22:13:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 10984 transitions. [2018-10-24 22:13:55,383 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 10984 transitions. Word has length 174 [2018-10-24 22:13:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:55,384 INFO L481 AbstractCegarLoop]: Abstraction has 7638 states and 10984 transitions. [2018-10-24 22:13:55,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:13:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 10984 transitions. [2018-10-24 22:13:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-24 22:13:55,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:55,390 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:13:55,390 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:55,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:55,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1278645089, now seen corresponding path program 1 times [2018-10-24 22:13:55,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:55,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:55,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:55,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:55,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:55,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:55,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:13:55,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:55,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:13:55,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:13:55,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:13:55,793 INFO L87 Difference]: Start difference. First operand 7638 states and 10984 transitions. Second operand 5 states. [2018-10-24 22:14:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:13,325 INFO L93 Difference]: Finished difference Result 23781 states and 35982 transitions. [2018-10-24 22:14:13,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:14:13,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2018-10-24 22:14:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:13,426 INFO L225 Difference]: With dead ends: 23781 [2018-10-24 22:14:13,426 INFO L226 Difference]: Without dead ends: 16149 [2018-10-24 22:14:13,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:14:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16149 states. [2018-10-24 22:14:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16149 to 16116. [2018-10-24 22:14:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16116 states. [2018-10-24 22:14:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16116 states to 16116 states and 22450 transitions. [2018-10-24 22:14:13,946 INFO L78 Accepts]: Start accepts. Automaton has 16116 states and 22450 transitions. Word has length 202 [2018-10-24 22:14:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:13,949 INFO L481 AbstractCegarLoop]: Abstraction has 16116 states and 22450 transitions. [2018-10-24 22:14:13,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:14:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 16116 states and 22450 transitions. [2018-10-24 22:14:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 22:14:13,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:13,958 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:14:13,958 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:13,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:13,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1543994889, now seen corresponding path program 1 times [2018-10-24 22:14:13,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:13,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:13,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:13,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:13,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:14,344 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:14:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 22:14:14,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:14,825 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:14:14,826 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-24 22:14:14,826 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], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1122], [1124], [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], [1286], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:14:14,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:14:14,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:14:15,721 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:14:38,358 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:14:38,359 INFO L272 AbstractInterpreter]: Visited 98 different actions 649 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:14:38,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:38,365 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:14:38,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:38,365 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:14:38,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:38,374 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:14:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:38,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:14:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:38,688 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:14:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:38,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:14:38,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 22:14:38,903 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:14:38,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:14:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:14:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:14:38,905 INFO L87 Difference]: Start difference. First operand 16116 states and 22450 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 22:14:50,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 22:14:50,185 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:14:50,191 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:14:50,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:14:50 BoogieIcfgContainer [2018-10-24 22:14:50,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:14:50,193 INFO L168 Benchmark]: Toolchain (without parser) took 244654.82 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 675.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:50,194 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:14:50,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1593.77 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. [2018-10-24 22:14:50,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 495.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:50,199 INFO L168 Benchmark]: Boogie Preprocessor took 328.59 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:50,200 INFO L168 Benchmark]: RCFGBuilder took 11459.27 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: 463.5 MB). Peak memory consumption was 463.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:50,202 INFO L168 Benchmark]: TraceAbstraction took 230772.40 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 197.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:50,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1593.77 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 495.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -929.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 328.59 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11459.27 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: 463.5 MB). Peak memory consumption was 463.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230772.40 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 197.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 179). Cancelled while BasicCegarLoop was constructing difference of abstraction (16116states) and FLOYD_HOARE automaton (currently 13 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (32290 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 230.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 125.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2083 SDtfs, 10531 SDslu, 1503 SDs, 0 SdLazy, 16999 SolverSat, 6094 SolverUnsat, 28 SolverUnknown, 0 SolverNotchecked, 118.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 781 GetRequests, 736 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 55.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16116occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 45.8s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 533 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 57.4s InterpolantComputationTime, 1174 NumberOfCodeBlocks, 1174 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1532 ConstructedInterpolants, 138 QuantifiedInterpolants, 2457149 SizeOfPredicates, 3 NumberOfNonLiveVariables, 713 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 733/852 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown