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/Problem11_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:16:19,270 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:16:19,272 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:16:19,291 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:16:19,292 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:16:19,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:16:19,294 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:16:19,296 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:16:19,297 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:16:19,298 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:16:19,299 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:16:19,299 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:16:19,300 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:16:19,301 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:16:19,302 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:16:19,303 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:16:19,304 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:16:19,306 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:16:19,308 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:16:19,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:16:19,310 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:16:19,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:16:19,314 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:16:19,314 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:16:19,314 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:16:19,315 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:16:19,316 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:16:19,317 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:16:19,318 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:16:19,320 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:16:19,321 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:16:19,323 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:16:19,324 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:16:19,324 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:16:19,326 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:16:19,327 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:16:19,328 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 21:16:19,358 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:16:19,359 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:16:19,360 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:16:19,360 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:16:19,360 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:16:19,360 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:16:19,360 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:16:19,363 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:16:19,363 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:16:19,364 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:16:19,364 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:16:19,364 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:16:19,365 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:16:19,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:16:19,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:16:19,365 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:16:19,366 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:16:19,366 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:16:19,366 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:16:19,366 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:16:19,366 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:16:19,367 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:16:19,367 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:16:19,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:16:19,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:16:19,368 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:16:19,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:16:19,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:16:19,370 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:16:19,370 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:16:19,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:16:19,371 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:16:19,371 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:16:19,371 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:16:19,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:16:19,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:16:19,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:16:19,452 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:16:19,452 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:16:19,453 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55_true-unreach-call.c [2018-10-24 21:16:19,523 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1cfa28b1/86cd72b270b644e69e4ac6b2c8988934/FLAGe17586d01 [2018-10-24 21:16:20,164 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:16:20,167 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label55_true-unreach-call.c [2018-10-24 21:16:20,187 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1cfa28b1/86cd72b270b644e69e4ac6b2c8988934/FLAGe17586d01 [2018-10-24 21:16:20,203 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a1cfa28b1/86cd72b270b644e69e4ac6b2c8988934 [2018-10-24 21:16:20,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:16:20,215 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:16:20,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:16:20,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:16:20,220 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:16:20,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:16:20" (1/1) ... [2018-10-24 21:16:20,224 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 09:16:20, skipping insertion in model container [2018-10-24 21:16:20,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:16:20" (1/1) ... [2018-10-24 21:16:20,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:16:20,309 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:16:21,026 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:16:21,031 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:16:21,228 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:16:21,246 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:16:21,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21 WrapperNode [2018-10-24 21:16:21,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:16:21,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:16:21,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:16:21,248 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:16:21,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:16:21,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:16:21,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:16:21,520 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:16:21,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (1/1) ... [2018-10-24 21:16:21,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:16:21,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:16:21,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:16:21,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:16:21,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (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 21:16:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:16:21,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:16:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:16:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:16:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:16:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:16:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:16:21,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:16:26,643 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:16:26,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:16:26 BoogieIcfgContainer [2018-10-24 21:16:26,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:16:26,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:16:26,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:16:26,655 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:16:26,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:16:20" (1/3) ... [2018-10-24 21:16:26,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1772fbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:16:26, skipping insertion in model container [2018-10-24 21:16:26,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:21" (2/3) ... [2018-10-24 21:16:26,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1772fbcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:16:26, skipping insertion in model container [2018-10-24 21:16:26,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:16:26" (3/3) ... [2018-10-24 21:16:26,662 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label55_true-unreach-call.c [2018-10-24 21:16:26,673 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:16:26,690 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:16:26,708 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:16:26,750 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:16:26,750 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:16:26,750 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:16:26,750 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:16:26,750 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:16:26,751 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:16:26,751 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:16:26,751 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:16:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:16:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 21:16:26,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:26,794 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] [2018-10-24 21:16:26,796 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:26,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:26,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2008695804, now seen corresponding path program 1 times [2018-10-24 21:16:26,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:26,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:26,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:26,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:26,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:27,390 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 21:16:27,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:16:27,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:16:27,393 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:27,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:16:27,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:16:27,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:16:27,419 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:16:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:16:31,042 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-24 21:16:31,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:16:31,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-24 21:16:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:16:31,069 INFO L225 Difference]: With dead ends: 979 [2018-10-24 21:16:31,069 INFO L226 Difference]: Without dead ends: 680 [2018-10-24 21:16:31,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:16:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-24 21:16:31,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-24 21:16:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-24 21:16:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-24 21:16:31,219 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 52 [2018-10-24 21:16:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:16:31,220 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-24 21:16:31,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:16:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-24 21:16:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 21:16:31,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:31,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:31,233 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:31,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:31,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1306963893, now seen corresponding path program 1 times [2018-10-24 21:16:31,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:31,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:31,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:31,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:31,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:31,692 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:16:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:16:31,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:16:31,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:16:31,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:31,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:16:31,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:16:31,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:16:31,902 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-24 21:16:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:16:36,264 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-24 21:16:36,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:16:36,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 21:16:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:16:36,284 INFO L225 Difference]: With dead ends: 1555 [2018-10-24 21:16:36,284 INFO L226 Difference]: Without dead ends: 1077 [2018-10-24 21:16:36,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:16:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-24 21:16:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-24 21:16:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-24 21:16:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-24 21:16:36,344 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 125 [2018-10-24 21:16:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:16:36,345 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-24 21:16:36,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:16:36,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-24 21:16:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 21:16:36,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:36,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:36,349 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:36,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1349379296, now seen corresponding path program 1 times [2018-10-24 21:16:36,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:36,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:36,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:36,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:36,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:16:36,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:16:36,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:16:36,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:36,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:16:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:16:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:16:36,580 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-10-24 21:16:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:16:39,412 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-10-24 21:16:39,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:16:39,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-24 21:16:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:16:39,428 INFO L225 Difference]: With dead ends: 2907 [2018-10-24 21:16:39,429 INFO L226 Difference]: Without dead ends: 1850 [2018-10-24 21:16:39,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:16:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-10-24 21:16:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-10-24 21:16:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-10-24 21:16:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-10-24 21:16:39,505 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 126 [2018-10-24 21:16:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:16:39,507 INFO L481 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-10-24 21:16:39,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:16:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-10-24 21:16:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 21:16:39,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:39,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:39,513 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:39,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:39,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1663032705, now seen corresponding path program 1 times [2018-10-24 21:16:39,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:39,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:39,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:39,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:39,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:16:39,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:16:39,841 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:16:39,842 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-10-24 21:16:39,844 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], [317], [319], [322], [330], [338], [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], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:16:39,914 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:16:39,914 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:16:42,953 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:16:43,247 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:16:43,249 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:16:43,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:43,287 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:16:45,545 INFO L232 lantSequenceWeakener]: Weakened 142 states. On average, predicates are now at 73.94% of their original sizes. [2018-10-24 21:16:45,545 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:16:45,991 INFO L413 sIntCurrentIteration]: We have 146 unified AI predicates [2018-10-24 21:16:45,992 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:16:45,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:16:45,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 21:16:45,993 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:45,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:16:45,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:16:45,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:16:45,995 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 7 states. [2018-10-24 21:17:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:17:09,777 INFO L93 Difference]: Finished difference Result 3478 states and 5113 transitions. [2018-10-24 21:17:09,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:17:09,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2018-10-24 21:17:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:17:09,792 INFO L225 Difference]: With dead ends: 3478 [2018-10-24 21:17:09,793 INFO L226 Difference]: Without dead ends: 1838 [2018-10-24 21:17:09,798 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 147 GetRequests, 141 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 21:17:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-10-24 21:17:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2018-10-24 21:17:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-10-24 21:17:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2636 transitions. [2018-10-24 21:17:09,858 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2636 transitions. Word has length 147 [2018-10-24 21:17:09,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:17:09,860 INFO L481 AbstractCegarLoop]: Abstraction has 1836 states and 2636 transitions. [2018-10-24 21:17:09,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:17:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2636 transitions. [2018-10-24 21:17:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-24 21:17:09,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:17:09,866 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:17:09,867 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:17:09,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:17:09,867 INFO L82 PathProgramCache]: Analyzing trace with hash 639193526, now seen corresponding path program 1 times [2018-10-24 21:17:09,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:17:09,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:09,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:17:09,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:09,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:17:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:17:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 21:17:10,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:17:10,472 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:17:10,472 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-10-24 21:17:10,473 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], [317], [319], [322], [330], [338], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:17:10,479 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:17:10,479 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:17:12,283 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:17:23,989 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:17:23,990 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:17:24,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:17:24,006 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:17:27,630 INFO L232 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 76.47% of their original sizes. [2018-10-24 21:17:27,630 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:18:09,137 INFO L413 sIntCurrentIteration]: We have 263 unified AI predicates [2018-10-24 21:18:09,138 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:18:09,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:18:09,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-24 21:18:09,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:09,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 21:18:09,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 21:18:09,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:18:09,140 INFO L87 Difference]: Start difference. First operand 1836 states and 2636 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 21:20:24,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:20:24,926 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:20:24,931 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:20:24,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:20:24 BoogieIcfgContainer [2018-10-24 21:20:24,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:20:24,932 INFO L168 Benchmark]: Toolchain (without parser) took 244718.42 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 736.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:24,934 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:20:24,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1031.27 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:24,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 271.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:24,936 INFO L168 Benchmark]: Boogie Preprocessor took 135.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:20:24,938 INFO L168 Benchmark]: RCFGBuilder took 4989.13 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: 197.6 MB). Peak memory consumption was 197.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:24,939 INFO L168 Benchmark]: TraceAbstraction took 238286.17 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 568.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:24,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1031.27 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 271.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4989.13 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: 197.6 MB). Peak memory consumption was 197.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238286.17 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 568.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (1836states) and FLOYD_HOARE automaton (currently 17 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (687 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 238.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 170.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1177 SDtfs, 3610 SDslu, 714 SDs, 0 SdLazy, 5535 SolverSat, 1410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 438 GetRequests, 365 SyntacticMatches, 35 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 45.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1836occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9954269673096084 AbsIntWeakeningRatio, 0.12224938875305623 AbsIntAvgWeakeningVarsNumRemoved, 540.8533007334963 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 416 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 714 NumberOfCodeBlocks, 714 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 414750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 182/320 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown