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/Problem14_label19_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:38:44,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:38:44,225 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:38:44,240 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:38:44,240 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:38:44,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:38:44,244 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:38:44,248 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:38:44,250 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:38:44,251 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:38:44,252 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:38:44,252 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:38:44,253 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:38:44,254 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:38:44,255 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:38:44,256 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:38:44,257 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:38:44,259 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:38:44,261 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:38:44,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:38:44,268 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:38:44,269 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:38:44,276 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:38:44,291 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 21:38:44,323 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:38:44,323 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:38:44,324 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:38:44,325 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:38:44,325 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:38:44,325 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:38:44,325 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:38:44,326 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:38:44,326 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:38:44,326 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:38:44,327 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:38:44,327 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:38:44,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:38:44,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:38:44,328 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:38:44,328 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:38:44,328 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:38:44,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:38:44,329 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:38:44,329 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:38:44,329 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:38:44,329 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:38:44,330 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:38:44,330 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:38:44,330 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:38:44,330 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:38:44,330 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:38:44,331 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:38:44,331 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:38:44,331 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:38:44,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:38:44,331 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:38:44,332 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:38:44,332 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:38:44,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:38:44,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:38:44,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:38:44,426 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:38:44,426 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:38:44,427 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label19_true-unreach-call_false-termination.c [2018-10-24 21:38:44,487 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b217a751/df2453d0e4014054a70e51048b417903/FLAG199bdd008 [2018-10-24 21:38:45,143 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:38:45,144 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label19_true-unreach-call_false-termination.c [2018-10-24 21:38:45,171 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b217a751/df2453d0e4014054a70e51048b417903/FLAG199bdd008 [2018-10-24 21:38:45,193 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b217a751/df2453d0e4014054a70e51048b417903 [2018-10-24 21:38:45,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:38:45,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:38:45,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:38:45,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:38:45,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:38:45,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:38:45" (1/1) ... [2018-10-24 21:38:45,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b8a232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:45, skipping insertion in model container [2018-10-24 21:38:45,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:38:45" (1/1) ... [2018-10-24 21:38:45,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:38:45,310 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:38:45,880 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:38:45,885 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:38:46,067 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:38:46,085 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:38:46,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46 WrapperNode [2018-10-24 21:38:46,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:38:46,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:38:46,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:38:46,087 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:38:46,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:38:46,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:38:46,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:38:46,326 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:38:46,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (1/1) ... [2018-10-24 21:38:46,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:38:46,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:38:46,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:38:46,449 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:38:46,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (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 21:38:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:38:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:38:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:38:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:38:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:38:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:38:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:38:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:38:50,437 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:38:50,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:38:50 BoogieIcfgContainer [2018-10-24 21:38:50,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:38:50,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:38:50,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:38:50,443 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:38:50,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:38:45" (1/3) ... [2018-10-24 21:38:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d1785f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:38:50, skipping insertion in model container [2018-10-24 21:38:50,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:38:46" (2/3) ... [2018-10-24 21:38:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d1785f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:38:50, skipping insertion in model container [2018-10-24 21:38:50,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:38:50" (3/3) ... [2018-10-24 21:38:50,448 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label19_true-unreach-call_false-termination.c [2018-10-24 21:38:50,459 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:38:50,474 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:38:50,494 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:38:50,549 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:38:50,550 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:38:50,550 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:38:50,550 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:38:50,551 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:38:50,551 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:38:50,551 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:38:50,551 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:38:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:38:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-24 21:38:50,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:50,592 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:38:50,595 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:50,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:50,602 INFO L82 PathProgramCache]: Analyzing trace with hash -949219895, now seen corresponding path program 1 times [2018-10-24 21:38:50,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:50,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:50,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:50,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:50,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:38:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:38:51,146 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:38:51,239 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 21:38:51,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:38:51,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:38:51,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:38:51,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:38:51,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:38:51,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:38:51,269 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:38:53,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:38:53,108 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:38:53,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:38:53,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-24 21:38:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:38:53,133 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:38:53,133 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:38:53,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:38:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:38:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:38:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:38:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 772 transitions. [2018-10-24 21:38:53,231 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 772 transitions. Word has length 69 [2018-10-24 21:38:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:38:53,232 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 772 transitions. [2018-10-24 21:38:53,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:38:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 772 transitions. [2018-10-24 21:38:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 21:38:53,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:53,242 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:38:53,243 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:53,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:53,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1252535900, now seen corresponding path program 1 times [2018-10-24 21:38:53,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:53,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:53,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:53,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:53,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:38:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:38:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:38:53,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:38:53,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:38:53,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:38:53,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:38:53,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:38:53,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:38:53,569 INFO L87 Difference]: Start difference. First operand 434 states and 772 transitions. Second operand 6 states. [2018-10-24 21:38:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:38:57,159 INFO L93 Difference]: Finished difference Result 1234 states and 2250 transitions. [2018-10-24 21:38:57,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:38:57,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 21:38:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:38:57,179 INFO L225 Difference]: With dead ends: 1234 [2018-10-24 21:38:57,179 INFO L226 Difference]: Without dead ends: 806 [2018-10-24 21:38:57,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:38:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-10-24 21:38:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-10-24 21:38:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-10-24 21:38:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1300 transitions. [2018-10-24 21:38:57,247 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1300 transitions. Word has length 139 [2018-10-24 21:38:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:38:57,248 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 1300 transitions. [2018-10-24 21:38:57,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:38:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1300 transitions. [2018-10-24 21:38:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 21:38:57,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:57,254 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:38:57,255 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:57,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:57,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1412263263, now seen corresponding path program 1 times [2018-10-24 21:38:57,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:57,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:57,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:57,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:57,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:38:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:38:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:38:57,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:38:57,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:38:57,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:38:57,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:38:57,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:38:57,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:38:57,433 INFO L87 Difference]: Start difference. First operand 797 states and 1300 transitions. Second operand 5 states. [2018-10-24 21:38:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:38:59,883 INFO L93 Difference]: Finished difference Result 2186 states and 3741 transitions. [2018-10-24 21:38:59,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:38:59,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-24 21:38:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:38:59,909 INFO L225 Difference]: With dead ends: 2186 [2018-10-24 21:38:59,909 INFO L226 Difference]: Without dead ends: 1395 [2018-10-24 21:38:59,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:38:59,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2018-10-24 21:38:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1369. [2018-10-24 21:38:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2018-10-24 21:38:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2191 transitions. [2018-10-24 21:38:59,986 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2191 transitions. Word has length 140 [2018-10-24 21:38:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:38:59,988 INFO L481 AbstractCegarLoop]: Abstraction has 1369 states and 2191 transitions. [2018-10-24 21:38:59,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:38:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2191 transitions. [2018-10-24 21:38:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 21:38:59,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:38:59,994 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:38:59,995 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:38:59,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:38:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash 531411331, now seen corresponding path program 1 times [2018-10-24 21:38:59,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:38:59,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:59,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:38:59,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:38:59,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:00,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:00,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:39:00,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:00,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:39:00,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:39:00,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:39:00,351 INFO L87 Difference]: Start difference. First operand 1369 states and 2191 transitions. Second operand 5 states. [2018-10-24 21:39:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:04,361 INFO L93 Difference]: Finished difference Result 4059 states and 6474 transitions. [2018-10-24 21:39:04,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:39:04,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2018-10-24 21:39:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:04,392 INFO L225 Difference]: With dead ends: 4059 [2018-10-24 21:39:04,393 INFO L226 Difference]: Without dead ends: 2696 [2018-10-24 21:39:04,405 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 21:39:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2018-10-24 21:39:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2603. [2018-10-24 21:39:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2603 states. [2018-10-24 21:39:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 3729 transitions. [2018-10-24 21:39:04,510 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 3729 transitions. Word has length 142 [2018-10-24 21:39:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:04,511 INFO L481 AbstractCegarLoop]: Abstraction has 2603 states and 3729 transitions. [2018-10-24 21:39:04,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:39:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 3729 transitions. [2018-10-24 21:39:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 21:39:04,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:04,515 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:39:04,516 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:04,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:04,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2121902484, now seen corresponding path program 1 times [2018-10-24 21:39:04,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:04,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:04,518 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:04,936 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 21:39:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:05,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:05,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:39:05,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:05,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:39:05,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:39:05,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:39:05,072 INFO L87 Difference]: Start difference. First operand 2603 states and 3729 transitions. Second operand 5 states. [2018-10-24 21:39:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:08,590 INFO L93 Difference]: Finished difference Result 6795 states and 10054 transitions. [2018-10-24 21:39:08,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 21:39:08,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-24 21:39:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:08,609 INFO L225 Difference]: With dead ends: 6795 [2018-10-24 21:39:08,610 INFO L226 Difference]: Without dead ends: 3293 [2018-10-24 21:39:08,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:39:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2018-10-24 21:39:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3278. [2018-10-24 21:39:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3278 states. [2018-10-24 21:39:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4140 transitions. [2018-10-24 21:39:08,717 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4140 transitions. Word has length 143 [2018-10-24 21:39:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:08,717 INFO L481 AbstractCegarLoop]: Abstraction has 3278 states and 4140 transitions. [2018-10-24 21:39:08,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:39:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4140 transitions. [2018-10-24 21:39:08,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-24 21:39:08,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:08,727 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:08,727 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:08,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:08,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1248172171, now seen corresponding path program 1 times [2018-10-24 21:39:08,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:08,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:08,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:08,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:08,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:08,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:39:08,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:39:08,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:08,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:39:08,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:39:08,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:39:08,997 INFO L87 Difference]: Start difference. First operand 3278 states and 4140 transitions. Second operand 4 states. [2018-10-24 21:39:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:10,818 INFO L93 Difference]: Finished difference Result 6733 states and 8492 transitions. [2018-10-24 21:39:10,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:39:10,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2018-10-24 21:39:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:10,842 INFO L225 Difference]: With dead ends: 6733 [2018-10-24 21:39:10,842 INFO L226 Difference]: Without dead ends: 3461 [2018-10-24 21:39:10,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:39:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2018-10-24 21:39:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3461. [2018-10-24 21:39:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3461 states. [2018-10-24 21:39:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 4335 transitions. [2018-10-24 21:39:10,937 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 4335 transitions. Word has length 242 [2018-10-24 21:39:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:10,937 INFO L481 AbstractCegarLoop]: Abstraction has 3461 states and 4335 transitions. [2018-10-24 21:39:10,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:39:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 4335 transitions. [2018-10-24 21:39:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-24 21:39:10,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:10,952 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:39:10,952 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:10,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:10,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2039548178, now seen corresponding path program 1 times [2018-10-24 21:39:10,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:10,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:10,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:10,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:10,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:39:12,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:39:12,117 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:39:12,118 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-10-24 21:39:12,120 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:39:12,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:39:12,204 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:39:14,535 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:39:19,103 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:39:19,105 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:39:19,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:19,148 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:39:22,378 INFO L232 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 78.18% of their original sizes. [2018-10-24 21:39:22,378 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:39:22,815 INFO L413 sIntCurrentIteration]: We have 283 unified AI predicates [2018-10-24 21:39:22,815 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:39:22,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:39:22,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-10-24 21:39:22,817 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:39:22,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:39:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:39:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:39:22,818 INFO L87 Difference]: Start difference. First operand 3461 states and 4335 transitions. Second operand 7 states. [2018-10-24 21:39:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:39:47,369 INFO L93 Difference]: Finished difference Result 7101 states and 8875 transitions. [2018-10-24 21:39:47,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:39:47,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2018-10-24 21:39:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:39:47,385 INFO L225 Difference]: With dead ends: 7101 [2018-10-24 21:39:47,386 INFO L226 Difference]: Without dead ends: 3646 [2018-10-24 21:39:47,398 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:39:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2018-10-24 21:39:47,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3644. [2018-10-24 21:39:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3644 states. [2018-10-24 21:39:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4520 transitions. [2018-10-24 21:39:47,490 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4520 transitions. Word has length 284 [2018-10-24 21:39:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:39:47,491 INFO L481 AbstractCegarLoop]: Abstraction has 3644 states and 4520 transitions. [2018-10-24 21:39:47,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:39:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4520 transitions. [2018-10-24 21:39:47,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-24 21:39:47,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:39:47,512 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:39:47,512 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:39:47,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash -806219320, now seen corresponding path program 1 times [2018-10-24 21:39:47,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:39:47,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:47,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:39:47,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:39:47,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:39:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:39:48,090 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:39:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 199 proven. 297 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:39:48,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:39:48,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:39:48,944 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-10-24 21:39:48,945 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:39:48,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:39:48,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:39:50,459 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:39:57,014 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:39:57,014 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:39:57,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:39:57,022 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:39:59,449 INFO L232 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 79.05% of their original sizes. [2018-10-24 21:39:59,449 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:40:07,447 INFO L413 sIntCurrentIteration]: We have 394 unified AI predicates [2018-10-24 21:40:07,448 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:40:07,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:40:07,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-10-24 21:40:07,448 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:40:07,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 21:40:07,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 21:40:07,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-10-24 21:40:07,450 INFO L87 Difference]: Start difference. First operand 3644 states and 4520 transitions. Second operand 21 states. [2018-10-24 21:42:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:07,565 INFO L93 Difference]: Finished difference Result 7476 states and 9280 transitions. [2018-10-24 21:42:07,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 21:42:07,565 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 395 [2018-10-24 21:42:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:07,582 INFO L225 Difference]: With dead ends: 7476 [2018-10-24 21:42:07,582 INFO L226 Difference]: Without dead ends: 4021 [2018-10-24 21:42:07,594 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 411 GetRequests, 373 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2018-10-24 21:42:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2018-10-24 21:42:07,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4016. [2018-10-24 21:42:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4016 states. [2018-10-24 21:42:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 4900 transitions. [2018-10-24 21:42:07,807 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 4900 transitions. Word has length 395 [2018-10-24 21:42:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:07,808 INFO L481 AbstractCegarLoop]: Abstraction has 4016 states and 4900 transitions. [2018-10-24 21:42:07,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 21:42:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 4900 transitions. [2018-10-24 21:42:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-10-24 21:42:07,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:07,834 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, 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, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:42:07,834 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:07,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1783785411, now seen corresponding path program 1 times [2018-10-24 21:42:07,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:07,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:07,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:07,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:07,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:08,610 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 21:42:09,247 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2018-10-24 21:42:09,637 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 14 [2018-10-24 21:42:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 558 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-24 21:42:10,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:42:10,258 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:42:10,258 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 506 with the following transitions: [2018-10-24 21:42:10,258 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [622], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:42:10,262 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:42:10,263 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:42:13,042 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:42:40,228 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 21:42:40,229 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 21:42:40,230 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 21:42:40,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:42:40,230 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 21:42:40,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:40,241 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:42:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:40,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:42:40,467 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 21:42:40,669 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:42:40,670 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:42:40,675 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:42:40,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:42:40 BoogieIcfgContainer [2018-10-24 21:42:40,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:42:40,679 INFO L168 Benchmark]: Toolchain (without parser) took 235472.96 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 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 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:42:40,680 INFO L168 Benchmark]: CDTParser took 0.22 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 21:42:40,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:42:40,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 238.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -846.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:42:40,686 INFO L168 Benchmark]: Boogie Preprocessor took 121.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:42:40,687 INFO L168 Benchmark]: RCFGBuilder took 3990.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.0 MB). Peak memory consumption was 130.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:42:40,689 INFO L168 Benchmark]: TraceAbstraction took 230235.88 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -845.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:42:40,698 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 877.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 238.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -846.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3990.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.0 MB). Peak memory consumption was 130.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230235.88 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -845.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was analyzing trace of length 506 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 162.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1387 SDtfs, 5719 SDslu, 1234 SDs, 0 SdLazy, 9801 SolverSat, 1726 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 742 GetRequests, 668 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4016occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 45.0s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9963901911673408 AbsIntWeakeningRatio, 0.08567208271787297 AbsIntAvgWeakeningVarsNumRemoved, 897.6262924667651 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 150 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1554 NumberOfCodeBlocks, 1554 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1546 ConstructedInterpolants, 0 QuantifiedInterpolants, 3419291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 738/1037 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown