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_label36_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:41:03,216 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:41:03,218 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:41:03,231 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:41:03,232 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:41:03,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:41:03,234 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:41:03,236 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:41:03,238 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:41:03,239 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:41:03,240 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:41:03,240 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:41:03,241 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:41:03,242 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:41:03,243 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:41:03,245 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:41:03,247 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:41:03,251 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:41:03,258 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:41:03,260 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:41:03,264 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:41:03,265 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:41:03,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:41:03,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:41:03,272 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:41:03,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:41:03,273 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:41:03,274 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:41:03,275 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:41:03,276 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:41:03,276 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:41:03,277 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:41:03,279 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 21:41:03,295 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:41:03,295 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:41:03,296 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:41:03,297 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:41:03,297 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:41:03,297 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:41:03,297 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:41:03,297 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:41:03,298 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:41:03,298 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:41:03,298 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:41:03,298 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:41:03,299 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:41:03,299 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:41:03,299 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:41:03,300 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:41:03,300 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:41:03,300 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:41:03,300 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:41:03,300 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:41:03,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:41:03,301 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:41:03,301 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:41:03,301 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:41:03,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:41:03,302 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:41:03,302 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:41:03,302 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:41:03,302 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:41:03,302 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:41:03,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:41:03,303 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:41:03,303 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:41:03,303 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:41:03,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:41:03,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:41:03,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:41:03,384 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:41:03,384 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:41:03,385 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36_true-unreach-call_false-termination.c [2018-10-24 21:41:03,449 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ffda45fe2/31b9638a09924763a1f84969d4629bf0/FLAG7b116cfc6 [2018-10-24 21:41:04,031 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:41:04,032 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label36_true-unreach-call_false-termination.c [2018-10-24 21:41:04,064 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ffda45fe2/31b9638a09924763a1f84969d4629bf0/FLAG7b116cfc6 [2018-10-24 21:41:04,081 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ffda45fe2/31b9638a09924763a1f84969d4629bf0 [2018-10-24 21:41:04,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:41:04,094 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:41:04,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:41:04,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:41:04,099 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:41:04,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:04,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5722cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04, skipping insertion in model container [2018-10-24 21:41:04,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:04,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:41:04,184 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:41:04,734 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:41:04,740 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:41:04,967 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:41:04,989 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:41:04,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04 WrapperNode [2018-10-24 21:41:04,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:41:04,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:41:04,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:41:04,991 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:41:05,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:41:05,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:41:05,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:41:05,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:41:05,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (1/1) ... [2018-10-24 21:41:05,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:41:05,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:41:05,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:41:05,346 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:41:05,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (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 21:41:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:41:05,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:41:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:41:05,430 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:41:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:41:05,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:41:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:41:05,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:41:08,968 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:41:08,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08 BoogieIcfgContainer [2018-10-24 21:41:08,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:41:08,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:41:08,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:41:08,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:41:08,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:41:04" (1/3) ... [2018-10-24 21:41:08,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe17036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:08, skipping insertion in model container [2018-10-24 21:41:08,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:04" (2/3) ... [2018-10-24 21:41:08,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe17036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:08, skipping insertion in model container [2018-10-24 21:41:08,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08" (3/3) ... [2018-10-24 21:41:08,987 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label36_true-unreach-call_false-termination.c [2018-10-24 21:41:08,997 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:41:09,009 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:41:09,027 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:41:09,066 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:41:09,067 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:41:09,067 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:41:09,067 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:41:09,067 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:41:09,068 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:41:09,068 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:41:09,068 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:41:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:41:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-24 21:41:09,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:09,107 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] [2018-10-24 21:41:09,110 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:09,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash -601836047, now seen corresponding path program 1 times [2018-10-24 21:41:09,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:09,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:09,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:09,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:09,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:09,542 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:41:09,620 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 21:41:09,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:41:09,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:41:09,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:09,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:41:09,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:41:09,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:41:09,647 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:41:11,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:41:11,419 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:41:11,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:41:11,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-24 21:41:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:41:11,442 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:41:11,442 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:41:11,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:41:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:41:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:41:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:41:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 21:41:11,539 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 55 [2018-10-24 21:41:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:41:11,539 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 21:41:11,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:41:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 21:41:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 21:41:11,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:11,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:11,549 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:11,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:11,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1606390417, now seen corresponding path program 1 times [2018-10-24 21:41:11,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:11,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:11,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:11,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:11,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:41:11,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:41:11,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:41:11,822 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:11,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:41:11,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:41:11,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:41:11,826 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 21:41:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:41:13,862 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 21:41:13,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:41:13,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-24 21:41:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:41:13,868 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 21:41:13,868 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 21:41:13,870 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 21:41:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 21:41:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 21:41:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 21:41:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 21:41:13,914 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 130 [2018-10-24 21:41:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:41:13,915 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 21:41:13,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:41:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 21:41:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 21:41:13,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:13,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:13,920 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:13,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:13,920 INFO L82 PathProgramCache]: Analyzing trace with hash 946019240, now seen corresponding path program 1 times [2018-10-24 21:41:13,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:13,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:13,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:13,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:13,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:41:14,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:41:14,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:41:14,114 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:14,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:41:14,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:41:14,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:41:14,116 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 21:41:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:41:18,525 INFO L93 Difference]: Finished difference Result 2350 states and 4005 transitions. [2018-10-24 21:41:18,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:41:18,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-24 21:41:18,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:41:18,547 INFO L225 Difference]: With dead ends: 2350 [2018-10-24 21:41:18,547 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 21:41:18,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:41:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 21:41:18,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 21:41:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 21:41:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2670 transitions. [2018-10-24 21:41:18,642 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2670 transitions. Word has length 139 [2018-10-24 21:41:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:41:18,643 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2670 transitions. [2018-10-24 21:41:18,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:41:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2670 transitions. [2018-10-24 21:41:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-24 21:41:18,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:18,658 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:41:18,658 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:18,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1544356755, now seen corresponding path program 1 times [2018-10-24 21:41:18,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:18,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:18,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:18,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:18,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:19,277 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2018-10-24 21:41:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:41:19,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:41:19,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:41:19,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-24 21:41:19,931 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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [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 21:41:20,002 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:41:20,002 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:41:22,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:41:25,451 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:41:25,453 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 21:41:25,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:25,497 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:41:28,828 INFO L232 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 78.01% of their original sizes. [2018-10-24 21:41:28,828 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:41:29,287 INFO L413 sIntCurrentIteration]: We have 262 unified AI predicates [2018-10-24 21:41:29,287 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:41:29,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:41:29,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-10-24 21:41:29,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:41:29,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:41:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:41:29,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:41:29,290 INFO L87 Difference]: Start difference. First operand 1731 states and 2670 transitions. Second operand 7 states. [2018-10-24 21:41:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:41:48,632 INFO L93 Difference]: Finished difference Result 3641 states and 5626 transitions. [2018-10-24 21:41:48,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:41:48,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2018-10-24 21:41:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:41:48,645 INFO L225 Difference]: With dead ends: 3641 [2018-10-24 21:41:48,645 INFO L226 Difference]: Without dead ends: 1916 [2018-10-24 21:41:48,655 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 263 GetRequests, 257 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 21:41:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-24 21:41:48,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-24 21:41:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 21:41:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2861 transitions. [2018-10-24 21:41:48,710 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2861 transitions. Word has length 263 [2018-10-24 21:41:48,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:41:48,711 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2861 transitions. [2018-10-24 21:41:48,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:41:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2861 transitions. [2018-10-24 21:41:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-24 21:41:48,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:41:48,724 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 21:41:48,724 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:41:48,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1780119455, now seen corresponding path program 1 times [2018-10-24 21:41:48,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:41:48,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:48,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:41:48,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:41:48,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:41:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:41:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 232 proven. 172 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:41:49,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:41:49,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:41:49,588 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-10-24 21:41:49,589 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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [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 21:41:49,595 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:41:49,595 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:41:52,770 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:41:58,690 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:41:58,690 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 21:41:58,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:41:58,698 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:42:01,094 INFO L232 lantSequenceWeakener]: Weakened 91 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-24 21:42:01,094 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:42:37,000 INFO L413 sIntCurrentIteration]: We have 347 unified AI predicates [2018-10-24 21:42:37,001 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:42:37,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:42:37,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-10-24 21:42:37,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:37,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:42:37,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:42:37,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:42:37,003 INFO L87 Difference]: Start difference. First operand 1914 states and 2861 transitions. Second operand 17 states. [2018-10-24 21:44:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:16,830 INFO L93 Difference]: Finished difference Result 4391 states and 6606 transitions. [2018-10-24 21:44:16,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 21:44:16,830 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 348 [2018-10-24 21:44:16,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:16,843 INFO L225 Difference]: With dead ends: 4391 [2018-10-24 21:44:16,843 INFO L226 Difference]: Without dead ends: 2666 [2018-10-24 21:44:16,853 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 353 GetRequests, 272 SyntacticMatches, 60 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-10-24 21:44:16,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2018-10-24 21:44:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2632. [2018-10-24 21:44:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2632 states. [2018-10-24 21:44:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 3616 transitions. [2018-10-24 21:44:16,980 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 3616 transitions. Word has length 348 [2018-10-24 21:44:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:16,981 INFO L481 AbstractCegarLoop]: Abstraction has 2632 states and 3616 transitions. [2018-10-24 21:44:16,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 21:44:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 3616 transitions. [2018-10-24 21:44:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-24 21:44:16,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:16,995 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:16,996 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:16,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:16,996 INFO L82 PathProgramCache]: Analyzing trace with hash -490485645, now seen corresponding path program 1 times [2018-10-24 21:44:16,997 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:16,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:16,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:16,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:16,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 157 proven. 283 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:44:18,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:44:18,305 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:44:18,306 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 375 with the following transitions: [2018-10-24 21:44:18,306 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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [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 21:44:18,314 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:44:18,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:44:20,381 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:44:26,846 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:44:26,846 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 21:44:26,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:26,852 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:44:30,303 INFO L232 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 78.16% of their original sizes. [2018-10-24 21:44:30,303 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:44:37,252 INFO L413 sIntCurrentIteration]: We have 373 unified AI predicates [2018-10-24 21:44:37,253 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:44:37,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:44:37,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 30 [2018-10-24 21:44:37,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:37,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:44:37,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:44:37,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:44:37,255 INFO L87 Difference]: Start difference. First operand 2632 states and 3616 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:44:52,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:44:52,165 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:44:52,170 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:44:52,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:44:52 BoogieIcfgContainer [2018-10-24 21:44:52,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:44:52,171 INFO L168 Benchmark]: Toolchain (without parser) took 228078.49 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 849.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:52,173 INFO L168 Benchmark]: CDTParser took 0.20 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 21:44:52,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 895.01 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 21:44:52,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 251.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:52,175 INFO L168 Benchmark]: Boogie Preprocessor took 100.29 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:52,176 INFO L168 Benchmark]: RCFGBuilder took 3626.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.8 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:52,176 INFO L168 Benchmark]: TraceAbstraction took 223200.16 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 747.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:44:52,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 895.01 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 251.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.29 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3626.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.8 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223200.16 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 747.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was constructing difference of abstraction (2632states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (63 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 223.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 142.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 786 SDtfs, 5720 SDslu, 463 SDs, 0 SdLazy, 5264 SolverSat, 1344 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1014 GetRequests, 894 SyntacticMatches, 63 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 45.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2632occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.2s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9960502818855336 AbsIntWeakeningRatio, 0.09164969450101833 AbsIntAvgWeakeningVarsNumRemoved, 506.969450101833 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1309 NumberOfCodeBlocks, 1309 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1303 ConstructedInterpolants, 0 QuantifiedInterpolants, 4634275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 684/1141 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown