java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:12:46,258 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:12:46,260 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:12:46,279 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:12:46,279 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:12:46,280 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:12:46,282 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:12:46,284 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:12:46,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:12:46,288 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:12:46,289 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:12:46,295 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:12:46,296 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:12:46,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:12:46,298 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:12:46,299 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:12:46,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:12:46,301 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:12:46,305 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:12:46,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:12:46,310 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:12:46,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:12:46,314 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:12:46,314 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:12:46,314 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:12:46,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:12:46,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:12:46,319 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:12:46,319 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:12:46,322 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:12:46,324 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:12:46,325 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:12:46,325 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:12:46,326 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:12:46,327 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:12:46,327 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:12:46,328 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:12:46,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:12:46,343 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:12:46,344 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:12:46,344 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:12:46,344 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:12:46,344 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:12:46,344 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:12:46,345 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:12:46,345 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:12:46,345 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:12:46,345 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:12:46,345 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:12:46,345 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:12:46,346 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:12:46,346 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:12:46,346 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:12:46,347 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:12:46,347 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:12:46,347 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:12:46,347 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:12:46,347 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:12:46,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:12:46,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:12:46,348 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:12:46,348 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:12:46,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:12:46,349 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:12:46,349 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:12:46,349 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:12:46,349 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:12:46,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:12:46,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:12:46,350 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:12:46,350 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:12:46,350 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:12:46,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:12:46,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:12:46,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:12:46,424 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:12:46,424 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:12:46,425 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-11-12 19:12:46,507 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f123b0884/258f51e0ee99454ab4b670e42d4b7a94/FLAG5eb8cb1cf [2018-11-12 19:12:47,206 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:12:47,207 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-11-12 19:12:47,225 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f123b0884/258f51e0ee99454ab4b670e42d4b7a94/FLAG5eb8cb1cf [2018-11-12 19:12:47,240 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f123b0884/258f51e0ee99454ab4b670e42d4b7a94 [2018-11-12 19:12:47,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:12:47,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:12:47,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:12:47,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:12:47,259 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:12:47,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:12:47" (1/1) ... [2018-11-12 19:12:47,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e53ccc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:47, skipping insertion in model container [2018-11-12 19:12:47,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:12:47" (1/1) ... [2018-11-12 19:12:47,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:12:47,385 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:12:48,283 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:12:48,287 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:12:48,583 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:12:48,604 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:12:48,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48 WrapperNode [2018-11-12 19:12:48,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:12:48,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:12:48,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:12:48,606 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:12:48,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:12:48,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:12:48,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:12:48,829 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:12:48,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... [2018-11-12 19:12:48,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:12:48,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:12:48,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:12:48,975 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:12:48,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:12:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:12:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:12:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:12:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:12:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:12:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:12:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:12:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:12:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:12:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:12:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:12:55,079 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:12:55,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:12:55 BoogieIcfgContainer [2018-11-12 19:12:55,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:12:55,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:12:55,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:12:55,084 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:12:55,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:12:47" (1/3) ... [2018-11-12 19:12:55,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ec3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:12:55, skipping insertion in model container [2018-11-12 19:12:55,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:12:48" (2/3) ... [2018-11-12 19:12:55,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ec3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:12:55, skipping insertion in model container [2018-11-12 19:12:55,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:12:55" (3/3) ... [2018-11-12 19:12:55,088 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-11-12 19:12:55,098 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:12:55,107 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:12:55,125 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:12:55,167 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:12:55,167 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:12:55,167 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:12:55,167 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:12:55,168 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:12:55,168 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:12:55,168 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:12:55,168 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:12:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:12:55,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-12 19:12:55,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:55,211 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:12:55,213 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:55,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:55,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1425761551, now seen corresponding path program 1 times [2018-11-12 19:12:55,221 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:55,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:55,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:55,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:55,277 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:12:55,730 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:12:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:12:55,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:12:55,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:12:55,808 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:12:55,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:12:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:12:55,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:12:55,835 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-12 19:12:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:12:59,709 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-11-12 19:12:59,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:12:59,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-12 19:12:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:12:59,734 INFO L225 Difference]: With dead ends: 1198 [2018-11-12 19:12:59,735 INFO L226 Difference]: Without dead ends: 758 [2018-11-12 19:12:59,743 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:12:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-11-12 19:12:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-11-12 19:12:59,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-11-12 19:12:59,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-11-12 19:12:59,855 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 45 [2018-11-12 19:12:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:12:59,856 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-11-12 19:12:59,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:12:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-11-12 19:12:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-12 19:12:59,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:59,863 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:12:59,863 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:59,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:59,864 INFO L82 PathProgramCache]: Analyzing trace with hash 146607380, now seen corresponding path program 1 times [2018-11-12 19:12:59,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:59,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:59,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:59,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:59,865 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:00,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:00,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:13:00,157 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:00,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:13:00,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:13:00,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:13:00,160 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-11-12 19:13:06,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:06,006 INFO L93 Difference]: Finished difference Result 2231 states and 3964 transitions. [2018-11-12 19:13:06,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:13:06,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-11-12 19:13:06,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:06,024 INFO L225 Difference]: With dead ends: 2231 [2018-11-12 19:13:06,024 INFO L226 Difference]: Without dead ends: 1483 [2018-11-12 19:13:06,028 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:13:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2018-11-12 19:13:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1449. [2018-11-12 19:13:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-11-12 19:13:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-11-12 19:13:06,103 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 119 [2018-11-12 19:13:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:06,104 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-11-12 19:13:06,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:13:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-11-12 19:13:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-12 19:13:06,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:06,116 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:06,117 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:06,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:06,117 INFO L82 PathProgramCache]: Analyzing trace with hash -762150644, now seen corresponding path program 1 times [2018-11-12 19:13:06,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:06,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:06,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:06,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:06,119 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:06,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:06,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:13:06,489 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:06,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:13:06,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:13:06,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:13:06,490 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-11-12 19:13:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:11,402 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-11-12 19:13:11,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:13:11,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-12 19:13:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:11,419 INFO L225 Difference]: With dead ends: 4188 [2018-11-12 19:13:11,419 INFO L226 Difference]: Without dead ends: 2745 [2018-11-12 19:13:11,427 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:13:11,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-11-12 19:13:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-11-12 19:13:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-11-12 19:13:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-11-12 19:13:11,505 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 131 [2018-11-12 19:13:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:11,506 INFO L480 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-11-12 19:13:11,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:13:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-11-12 19:13:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-12 19:13:11,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:11,509 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:11,509 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:11,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:11,510 INFO L82 PathProgramCache]: Analyzing trace with hash -131413768, now seen corresponding path program 1 times [2018-11-12 19:13:11,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:11,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:11,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:11,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:11,511 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:11,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:11,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:13:11,798 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:11,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:13:11,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:13:11,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:13:11,799 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-11-12 19:13:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:16,230 INFO L93 Difference]: Finished difference Result 6682 states and 9546 transitions. [2018-11-12 19:13:16,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:13:16,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-12 19:13:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:16,259 INFO L225 Difference]: With dead ends: 6682 [2018-11-12 19:13:16,259 INFO L226 Difference]: Without dead ends: 3977 [2018-11-12 19:13:16,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:13:16,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-11-12 19:13:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3953. [2018-11-12 19:13:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-11-12 19:13:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-11-12 19:13:16,381 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 132 [2018-11-12 19:13:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:16,381 INFO L480 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-11-12 19:13:16,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:13:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-11-12 19:13:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-12 19:13:16,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:16,386 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:16,386 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:16,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:16,387 INFO L82 PathProgramCache]: Analyzing trace with hash 61536093, now seen corresponding path program 1 times [2018-11-12 19:13:16,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:16,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:16,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:16,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:16,388 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:17,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:17,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:13:17,002 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:17,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:13:17,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:13:17,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:13:17,004 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-11-12 19:13:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:25,208 INFO L93 Difference]: Finished difference Result 14055 states and 18983 transitions. [2018-11-12 19:13:25,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:13:25,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-12 19:13:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:25,256 INFO L225 Difference]: With dead ends: 14055 [2018-11-12 19:13:25,256 INFO L226 Difference]: Without dead ends: 10108 [2018-11-12 19:13:25,283 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:13:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2018-11-12 19:13:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 9903. [2018-11-12 19:13:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9903 states. [2018-11-12 19:13:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9903 states to 9903 states and 12523 transitions. [2018-11-12 19:13:25,513 INFO L78 Accepts]: Start accepts. Automaton has 9903 states and 12523 transitions. Word has length 172 [2018-11-12 19:13:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:25,513 INFO L480 AbstractCegarLoop]: Abstraction has 9903 states and 12523 transitions. [2018-11-12 19:13:25,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:13:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 9903 states and 12523 transitions. [2018-11-12 19:13:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-12 19:13:25,520 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:25,521 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:25,521 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:25,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash 183841615, now seen corresponding path program 1 times [2018-11-12 19:13:25,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:25,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:25,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:25,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:25,523 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-12 19:13:25,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:25,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:13:25,843 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:25,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:13:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:13:25,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:25,845 INFO L87 Difference]: Start difference. First operand 9903 states and 12523 transitions. Second operand 4 states. [2018-11-12 19:13:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:30,366 INFO L93 Difference]: Finished difference Result 32954 states and 43877 transitions. [2018-11-12 19:13:30,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:13:30,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-11-12 19:13:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:30,449 INFO L225 Difference]: With dead ends: 32954 [2018-11-12 19:13:30,450 INFO L226 Difference]: Without dead ends: 23057 [2018-11-12 19:13:30,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:13:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23057 states. [2018-11-12 19:13:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23057 to 22425. [2018-11-12 19:13:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22425 states. [2018-11-12 19:13:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22425 states to 22425 states and 27436 transitions. [2018-11-12 19:13:31,030 INFO L78 Accepts]: Start accepts. Automaton has 22425 states and 27436 transitions. Word has length 200 [2018-11-12 19:13:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:31,031 INFO L480 AbstractCegarLoop]: Abstraction has 22425 states and 27436 transitions. [2018-11-12 19:13:31,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:13:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 22425 states and 27436 transitions. [2018-11-12 19:13:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-12 19:13:31,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:31,043 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:31,043 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:31,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:31,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1258150557, now seen corresponding path program 1 times [2018-11-12 19:13:31,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:31,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:31,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:31,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:31,045 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:31,256 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-11-12 19:13:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-12 19:13:31,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:31,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:13:31,279 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:31,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:13:31,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:13:31,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:13:31,280 INFO L87 Difference]: Start difference. First operand 22425 states and 27436 transitions. Second operand 3 states. [2018-11-12 19:13:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:34,719 INFO L93 Difference]: Finished difference Result 50641 states and 63873 transitions. [2018-11-12 19:13:34,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:13:34,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-11-12 19:13:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:34,860 INFO L225 Difference]: With dead ends: 50641 [2018-11-12 19:13:34,860 INFO L226 Difference]: Without dead ends: 28222 [2018-11-12 19:13:34,950 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:13:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28222 states. [2018-11-12 19:13:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28222 to 28123. [2018-11-12 19:13:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28123 states. [2018-11-12 19:13:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28123 states to 28123 states and 35307 transitions. [2018-11-12 19:13:35,739 INFO L78 Accepts]: Start accepts. Automaton has 28123 states and 35307 transitions. Word has length 213 [2018-11-12 19:13:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:35,740 INFO L480 AbstractCegarLoop]: Abstraction has 28123 states and 35307 transitions. [2018-11-12 19:13:35,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:13:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 28123 states and 35307 transitions. [2018-11-12 19:13:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-12 19:13:35,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:35,755 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:13:35,755 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:35,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:35,756 INFO L82 PathProgramCache]: Analyzing trace with hash -79355213, now seen corresponding path program 1 times [2018-11-12 19:13:35,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:35,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:35,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:35,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:35,757 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:36,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:36,200 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:36,201 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-12 19:13:36,203 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:36,249 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:36,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:36,732 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:13:36,733 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Performed 868 root evaluator evaluations with a maximum evaluation depth of 4. Performed 868 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:13:36,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:36,777 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:13:37,249 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-12 19:13:37,249 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:13:37,510 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-12 19:13:37,510 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:13:37,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:13:37,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:13:37,511 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:37,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:13:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:13:37,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:13:37,513 INFO L87 Difference]: Start difference. First operand 28123 states and 35307 transitions. Second operand 7 states. [2018-11-12 19:13:39,837 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:58,292 INFO L93 Difference]: Finished difference Result 56550 states and 70970 transitions. [2018-11-12 19:13:58,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:13:58,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2018-11-12 19:13:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:58,407 INFO L225 Difference]: With dead ends: 56550 [2018-11-12 19:13:58,407 INFO L226 Difference]: Without dead ends: 28433 [2018-11-12 19:13:58,508 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:13:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28433 states. [2018-11-12 19:13:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28433 to 28431. [2018-11-12 19:13:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28431 states. [2018-11-12 19:13:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28431 states to 28431 states and 35624 transitions. [2018-11-12 19:13:59,473 INFO L78 Accepts]: Start accepts. Automaton has 28431 states and 35624 transitions. Word has length 218 [2018-11-12 19:13:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:59,473 INFO L480 AbstractCegarLoop]: Abstraction has 28431 states and 35624 transitions. [2018-11-12 19:13:59,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:13:59,474 INFO L276 IsEmpty]: Start isEmpty. Operand 28431 states and 35624 transitions. [2018-11-12 19:13:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-11-12 19:13:59,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:59,490 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:13:59,491 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:59,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:59,491 INFO L82 PathProgramCache]: Analyzing trace with hash -174466883, now seen corresponding path program 1 times [2018-11-12 19:13:59,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:59,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:59,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:59,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:59,493 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-12 19:13:59,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:59,833 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:59,833 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-11-12 19:13:59,833 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:59,839 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:59,839 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:59,906 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:01,042 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:14:01,043 INFO L272 AbstractInterpreter]: Visited 105 different actions 699 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 11440 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11440 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:14:01,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:01,083 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:14:01,690 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 19:14:01,691 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:14:03,508 INFO L415 sIntCurrentIteration]: We unified 313 AI predicates to 313 [2018-11-12 19:14:03,508 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:14:03,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:14:03,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:14:03,509 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:03,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:14:03,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:14:03,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:14:03,510 INFO L87 Difference]: Start difference. First operand 28431 states and 35624 transitions. Second operand 18 states. [2018-11-12 19:14:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:44,595 INFO L93 Difference]: Finished difference Result 58831 states and 73543 transitions. [2018-11-12 19:14:44,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-12 19:14:44,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 314 [2018-11-12 19:14:44,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:44,731 INFO L225 Difference]: With dead ends: 58831 [2018-11-12 19:14:44,731 INFO L226 Difference]: Without dead ends: 30714 [2018-11-12 19:14:44,839 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 326 GetRequests, 295 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:14:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30714 states. [2018-11-12 19:14:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30714 to 30218. [2018-11-12 19:14:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30218 states. [2018-11-12 19:14:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30218 states to 30218 states and 37487 transitions. [2018-11-12 19:14:46,336 INFO L78 Accepts]: Start accepts. Automaton has 30218 states and 37487 transitions. Word has length 314 [2018-11-12 19:14:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:46,336 INFO L480 AbstractCegarLoop]: Abstraction has 30218 states and 37487 transitions. [2018-11-12 19:14:46,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:14:46,336 INFO L276 IsEmpty]: Start isEmpty. Operand 30218 states and 37487 transitions. [2018-11-12 19:14:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-11-12 19:14:46,358 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:46,358 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:14:46,358 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:46,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:46,359 INFO L82 PathProgramCache]: Analyzing trace with hash -568287624, now seen corresponding path program 1 times [2018-11-12 19:14:46,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:46,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:46,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:46,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:46,360 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-12 19:14:47,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:14:47,044 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:14:47,044 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 400 with the following transitions: [2018-11-12 19:14:47,045 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:14:47,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:14:47,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:14:47,230 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:47,627 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:14:47,628 INFO L272 AbstractInterpreter]: Visited 190 different actions 557 times. Merged at 5 different actions 9 times. Never widened. Performed 12912 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12912 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:14:47,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:47,634 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:14:48,542 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 19:14:48,543 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:14:51,020 INFO L415 sIntCurrentIteration]: We unified 398 AI predicates to 398 [2018-11-12 19:14:51,021 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:14:51,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:14:51,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:14:51,021 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:51,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:14:51,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:14:51,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:14:51,022 INFO L87 Difference]: Start difference. First operand 30218 states and 37487 transitions. Second operand 18 states. [2018-11-12 19:15:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:41,870 INFO L93 Difference]: Finished difference Result 60365 states and 75145 transitions. [2018-11-12 19:15:41,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 19:15:41,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 399 [2018-11-12 19:15:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:41,968 INFO L225 Difference]: With dead ends: 60365 [2018-11-12 19:15:41,968 INFO L226 Difference]: Without dead ends: 32248 [2018-11-12 19:15:42,026 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 412 GetRequests, 322 SyntacticMatches, 60 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2018-11-12 19:15:42,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32248 states. [2018-11-12 19:15:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32248 to 31754. [2018-11-12 19:15:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31754 states. [2018-11-12 19:15:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31754 states to 31754 states and 39086 transitions. [2018-11-12 19:15:42,567 INFO L78 Accepts]: Start accepts. Automaton has 31754 states and 39086 transitions. Word has length 399 [2018-11-12 19:15:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:42,568 INFO L480 AbstractCegarLoop]: Abstraction has 31754 states and 39086 transitions. [2018-11-12 19:15:42,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:15:42,568 INFO L276 IsEmpty]: Start isEmpty. Operand 31754 states and 39086 transitions. [2018-11-12 19:15:42,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-11-12 19:15:42,597 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:42,597 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:15:42,598 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:42,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash -43114992, now seen corresponding path program 1 times [2018-11-12 19:15:42,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:42,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:42,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:42,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:42,600 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-12 19:15:43,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:43,235 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:43,235 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 457 with the following transitions: [2018-11-12 19:15:43,236 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [660], [663], [667], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:43,240 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:43,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:43,384 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:43,742 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:15:43,742 INFO L272 AbstractInterpreter]: Visited 247 different actions 728 times. Merged at 5 different actions 9 times. Never widened. Performed 11090 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11090 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:15:43,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:43,753 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:15:45,022 INFO L227 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-12 19:15:45,023 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:15:47,635 INFO L415 sIntCurrentIteration]: We unified 455 AI predicates to 455 [2018-11-12 19:15:47,635 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:15:47,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:15:47,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 19:15:47,635 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:47,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:15:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:15:47,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:15:47,637 INFO L87 Difference]: Start difference. First operand 31754 states and 39086 transitions. Second operand 17 states. Received shutdown request... [2018-11-12 19:16:22,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 19:16:22,093 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:16:22,097 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:16:22,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:16:22 BoogieIcfgContainer [2018-11-12 19:16:22,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:16:22,098 INFO L168 Benchmark]: Toolchain (without parser) took 214846.48 ms. Allocated memory was 1.6 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -674.5 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 19:16:22,100 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:16:22,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1350.94 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:22,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 222.87 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -927.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:22,102 INFO L168 Benchmark]: Boogie Preprocessor took 145.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:22,103 INFO L168 Benchmark]: RCFGBuilder took 6105.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 287.5 MB). Peak memory consumption was 287.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:16:22,103 INFO L168 Benchmark]: TraceAbstraction took 207017.16 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 19:16:22,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1350.94 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 222.87 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -927.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6105.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 287.5 MB). Peak memory consumption was 287.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207017.16 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (31754states) and FLOYD_HOARE automaton (currently 20 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (11416 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 183.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3192 SDtfs, 25988 SDslu, 2455 SDs, 0 SdLazy, 32479 SolverSat, 3989 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.5s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1472 GetRequests, 1218 SyntacticMatches, 136 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31754occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 4 AbstIntIterations, 4 AbstIntStrong, 0.9975460129378838 AbsIntWeakeningRatio, 0.0911062906724512 AbsIntAvgWeakeningVarsNumRemoved, 10.6941431670282 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2024 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 2399 NumberOfCodeBlocks, 2399 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2388 ConstructedInterpolants, 0 QuantifiedInterpolants, 1732391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 1706/1714 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown