java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:27:35,360 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:27:35,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:27:35,382 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:27:35,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:27:35,384 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:27:35,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:27:35,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:27:35,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:27:35,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:27:35,393 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:27:35,393 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:27:35,395 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:27:35,396 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:27:35,399 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:27:35,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:27:35,401 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:27:35,408 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:27:35,413 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:27:35,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:27:35,420 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:27:35,421 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:27:35,427 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:27:35,427 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:27:35,427 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:27:35,428 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:27:35,430 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:27:35,431 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:27:35,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:27:35,438 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:27:35,438 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:27:35,442 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:27:35,442 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:27:35,442 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:27:35,443 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:27:35,444 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:27:35,444 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:27:35,467 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:27:35,467 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:27:35,468 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:27:35,468 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:27:35,468 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:27:35,469 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:27:35,469 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:27:35,469 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:27:35,469 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:27:35,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:27:35,469 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:27:35,470 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:27:35,470 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:27:35,470 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:27:35,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:27:35,471 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:27:35,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:27:35,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:27:35,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:27:35,472 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:27:35,472 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:27:35,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:27:35,472 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:27:35,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:27:35,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:27:35,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:27:35,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:27:35,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:27:35,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:27:35,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:27:35,474 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:27:35,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:27:35,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:27:35,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:27:35,475 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:27:35,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:27:35,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:27:35,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:27:35,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:27:35,536 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:27:35,536 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:27:35,537 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c [2018-11-07 06:27:35,594 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703b02e6f/5a8467d7f8504993991ddd9a5698a9af/FLAG44768bec5 [2018-11-07 06:27:36,224 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:27:36,229 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c [2018-11-07 06:27:36,249 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703b02e6f/5a8467d7f8504993991ddd9a5698a9af/FLAG44768bec5 [2018-11-07 06:27:36,268 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703b02e6f/5a8467d7f8504993991ddd9a5698a9af [2018-11-07 06:27:36,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:27:36,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:27:36,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:27:36,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:27:36,290 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:27:36,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:27:36" (1/1) ... [2018-11-07 06:27:36,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44783422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:36, skipping insertion in model container [2018-11-07 06:27:36,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:27:36" (1/1) ... [2018-11-07 06:27:36,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:27:36,364 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:27:36,843 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:27:36,848 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:27:37,026 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:27:37,060 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:27:37,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37 WrapperNode [2018-11-07 06:27:37,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:27:37,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:27:37,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:27:37,062 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:27:37,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:27:37,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:27:37,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:27:37,233 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:27:37,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... [2018-11-07 06:27:37,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:27:37,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:27:37,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:27:37,361 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:27:37,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:27:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:27:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:27:37,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:27:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:27:37,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:27:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:27:37,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:27:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:27:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:27:40,975 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:27:40,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:27:40 BoogieIcfgContainer [2018-11-07 06:27:40,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:27:40,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:27:40,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:27:40,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:27:40,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:27:36" (1/3) ... [2018-11-07 06:27:40,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4b482d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:27:40, skipping insertion in model container [2018-11-07 06:27:40,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:37" (2/3) ... [2018-11-07 06:27:40,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4b482d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:27:40, skipping insertion in model container [2018-11-07 06:27:40,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:27:40" (3/3) ... [2018-11-07 06:27:40,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label57_false-unreach-call_false-termination.c [2018-11-07 06:27:40,996 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:27:41,007 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:27:41,022 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:27:41,065 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:27:41,065 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:27:41,065 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:27:41,065 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:27:41,066 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:27:41,066 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:27:41,066 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:27:41,066 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:27:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:27:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 06:27:41,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:41,115 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] [2018-11-07 06:27:41,118 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:41,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1786255177, now seen corresponding path program 1 times [2018-11-07 06:27:41,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:41,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:41,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:41,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:41,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:27:41,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:27:41,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:27:41,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:41,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:27:41,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:27:41,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:27:41,660 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 06:27:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:43,385 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 06:27:43,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:27:43,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-07 06:27:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:43,411 INFO L225 Difference]: With dead ends: 691 [2018-11-07 06:27:43,411 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 06:27:43,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:27:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 06:27:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 06:27:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:27:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 06:27:43,535 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 37 [2018-11-07 06:27:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:43,536 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 06:27:43,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:27:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 06:27:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 06:27:43,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:43,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:43,549 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:43,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:43,550 INFO L82 PathProgramCache]: Analyzing trace with hash -778187265, now seen corresponding path program 1 times [2018-11-07 06:27:43,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:43,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:43,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:43,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:43,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:27:43,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:27:43,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:27:43,928 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:43,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:27:43,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:27:43,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:27:43,932 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 06:27:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:45,964 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 06:27:45,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:27:45,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-11-07 06:27:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:45,972 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 06:27:45,972 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 06:27:45,979 INFO L604 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 [2018-11-07 06:27:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 06:27:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 06:27:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 06:27:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 06:27:46,027 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 124 [2018-11-07 06:27:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:46,027 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 06:27:46,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:27:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 06:27:46,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 06:27:46,032 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:46,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:46,033 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:46,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:46,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1753523144, now seen corresponding path program 1 times [2018-11-07 06:27:46,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:46,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:46,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:46,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:27:46,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:27:46,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:27:46,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:46,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:27:46,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:27:46,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:27:46,262 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-07 06:27:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:50,599 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-11-07 06:27:50,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:27:50,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2018-11-07 06:27:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:50,613 INFO L225 Difference]: With dead ends: 2352 [2018-11-07 06:27:50,614 INFO L226 Difference]: Without dead ends: 1733 [2018-11-07 06:27:50,620 INFO L604 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 [2018-11-07 06:27:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-11-07 06:27:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-11-07 06:27:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-07 06:27:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-11-07 06:27:50,683 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 133 [2018-11-07 06:27:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:50,684 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-11-07 06:27:50,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:27:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-11-07 06:27:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 06:27:50,702 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:50,703 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:27:50,703 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:50,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash 853397474, now seen corresponding path program 1 times [2018-11-07 06:27:50,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:50,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:50,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:50,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:50,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:51,250 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 06:27:51,609 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 06:27:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:27:51,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:51,834 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:51,835 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 06:27:51,837 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:51,887 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:51,888 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:56,316 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:27:56,318 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:27:56,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:56,332 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:27:59,273 INFO L227 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 77.65% of their original sizes. [2018-11-07 06:27:59,273 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:27:59,515 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-07 06:27:59,515 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:27:59,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:27:59,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 06:27:59,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:59,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:27:59,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:27:59,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:27:59,519 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 6 states. [2018-11-07 06:28:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:28:11,247 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-11-07 06:28:11,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:28:11,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 262 [2018-11-07 06:28:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:28:11,261 INFO L225 Difference]: With dead ends: 3645 [2018-11-07 06:28:11,262 INFO L226 Difference]: Without dead ends: 1918 [2018-11-07 06:28:11,270 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:28:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-07 06:28:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-11-07 06:28:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 06:28:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-11-07 06:28:11,327 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 262 [2018-11-07 06:28:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:28:11,328 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-11-07 06:28:11,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:28:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-11-07 06:28:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 06:28:11,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:28:11,339 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:28:11,339 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:28:11,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash -438030448, now seen corresponding path program 1 times [2018-11-07 06:28:11,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:28:11,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:11,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:11,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:11,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:28:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 178 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:28:12,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:12,287 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:28:12,287 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 06:28:12,287 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:28:12,293 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:28:12,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:28:16,186 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:28:16,186 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:28:16,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:16,196 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:28:18,286 INFO L227 lantSequenceWeakener]: Weakened 344 states. On average, predicates are now at 77.62% of their original sizes. [2018-11-07 06:28:18,287 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:28:18,815 INFO L415 sIntCurrentIteration]: We unified 346 AI predicates to 346 [2018-11-07 06:28:18,815 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:28:18,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:28:18,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 06:28:18,816 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:28:18,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:28:18,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:28:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:28:18,818 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 10 states. [2018-11-07 06:29:24,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:29:24,293 INFO L93 Difference]: Finished difference Result 4389 states and 6461 transitions. [2018-11-07 06:29:24,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:29:24,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 347 [2018-11-07 06:29:24,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:29:24,313 INFO L225 Difference]: With dead ends: 4389 [2018-11-07 06:29:24,314 INFO L226 Difference]: Without dead ends: 2292 [2018-11-07 06:29:24,324 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 355 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:29:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2018-11-07 06:29:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2290. [2018-11-07 06:29:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2018-11-07 06:29:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3235 transitions. [2018-11-07 06:29:24,384 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3235 transitions. Word has length 347 [2018-11-07 06:29:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:29:24,385 INFO L480 AbstractCegarLoop]: Abstraction has 2290 states and 3235 transitions. [2018-11-07 06:29:24,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:29:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3235 transitions. [2018-11-07 06:29:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-11-07 06:29:24,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:29:24,399 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:29:24,399 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:29:24,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash 178840953, now seen corresponding path program 1 times [2018-11-07 06:29:24,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:29:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:24,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:24,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:29:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:25,623 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 06:29:26,101 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 06:29:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 318 proven. 249 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 06:29:26,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:26,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:29:26,820 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 448 with the following transitions: [2018-11-07 06:29:26,820 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:29:26,825 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:29:26,825 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:29:30,789 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:29:30,789 INFO L272 AbstractInterpreter]: Visited 123 different actions 240 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:29:30,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:30,798 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:29:32,946 INFO L227 lantSequenceWeakener]: Weakened 444 states. On average, predicates are now at 77.58% of their original sizes. [2018-11-07 06:29:32,947 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:29:33,102 INFO L415 sIntCurrentIteration]: We unified 446 AI predicates to 446 [2018-11-07 06:29:33,102 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:29:33,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:29:33,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 06:29:33,103 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:29:33,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:29:33,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:29:33,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:29:33,105 INFO L87 Difference]: Start difference. First operand 2290 states and 3235 transitions. Second operand 10 states. [2018-11-07 06:29:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:29:49,939 INFO L93 Difference]: Finished difference Result 4205 states and 6085 transitions. [2018-11-07 06:29:49,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:29:49,939 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 447 [2018-11-07 06:29:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:29:49,949 INFO L225 Difference]: With dead ends: 4205 [2018-11-07 06:29:49,950 INFO L226 Difference]: Without dead ends: 2104 [2018-11-07 06:29:49,958 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 454 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:29:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2018-11-07 06:29:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2101. [2018-11-07 06:29:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2018-11-07 06:29:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3020 transitions. [2018-11-07 06:29:50,012 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3020 transitions. Word has length 447 [2018-11-07 06:29:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:29:50,013 INFO L480 AbstractCegarLoop]: Abstraction has 2101 states and 3020 transitions. [2018-11-07 06:29:50,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:29:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3020 transitions. [2018-11-07 06:29:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-11-07 06:29:50,027 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:29:50,027 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:29:50,028 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:29:50,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash 870094449, now seen corresponding path program 1 times [2018-11-07 06:29:50,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:29:50,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:50,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:50,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:50,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:29:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 352 proven. 111 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 06:29:50,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:50,609 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:29:50,609 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 484 with the following transitions: [2018-11-07 06:29:50,609 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:29:50,614 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:29:50,614 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:29:58,779 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:29:58,780 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 06:29:58,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:58,790 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:29:59,943 INFO L227 lantSequenceWeakener]: Weakened 480 states. On average, predicates are now at 80.23% of their original sizes. [2018-11-07 06:29:59,944 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:30:00,011 INFO L415 sIntCurrentIteration]: We unified 482 AI predicates to 482 [2018-11-07 06:30:00,011 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:30:00,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:30:00,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 06:30:00,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:30:00,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:30:00,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:30:00,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:30:00,013 INFO L87 Difference]: Start difference. First operand 2101 states and 3020 transitions. Second operand 9 states. [2018-11-07 06:30:26,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:30:26,994 INFO L93 Difference]: Finished difference Result 4544 states and 6766 transitions. [2018-11-07 06:30:26,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:30:26,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 483 [2018-11-07 06:30:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:30:27,007 INFO L225 Difference]: With dead ends: 4544 [2018-11-07 06:30:27,007 INFO L226 Difference]: Without dead ends: 2817 [2018-11-07 06:30:27,017 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 489 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:30:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-07 06:30:27,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2801. [2018-11-07 06:30:27,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2018-11-07 06:30:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3921 transitions. [2018-11-07 06:30:27,087 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3921 transitions. Word has length 483 [2018-11-07 06:30:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:30:27,088 INFO L480 AbstractCegarLoop]: Abstraction has 2801 states and 3921 transitions. [2018-11-07 06:30:27,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:30:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3921 transitions. [2018-11-07 06:30:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-11-07 06:30:27,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:30:27,108 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:30:27,108 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:30:27,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash 629897664, now seen corresponding path program 1 times [2018-11-07 06:30:27,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:30:27,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:27,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:27,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:27,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:30:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 354 proven. 321 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 06:30:28,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:28,317 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:30:28,318 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 551 with the following transitions: [2018-11-07 06:30:28,318 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:30:28,324 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:30:28,324 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:30:34,069 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:30:34,069 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:30:34,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:34,077 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:30:34,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:34,077 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:30:34,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:34,088 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:30:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:34,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:30:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-07 06:30:35,192 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:30:35,394 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2018-11-07 06:30:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 352 proven. 111 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 06:30:36,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:30:36,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 06:30:36,112 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:30:36,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:30:36,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:30:36,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:30:36,114 INFO L87 Difference]: Start difference. First operand 2801 states and 3921 transitions. Second operand 17 states. [2018-11-07 06:30:40,215 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-11-07 06:30:40,483 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-07 06:30:42,873 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 06:30:45,457 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-11-07 06:30:46,283 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-11-07 06:30:48,226 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2018-11-07 06:30:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:30:49,558 INFO L93 Difference]: Finished difference Result 7632 states and 11612 transitions. [2018-11-07 06:30:49,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 06:30:49,559 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 550 [2018-11-07 06:30:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:30:49,585 INFO L225 Difference]: With dead ends: 7632 [2018-11-07 06:30:49,585 INFO L226 Difference]: Without dead ends: 5205 [2018-11-07 06:30:49,617 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1133 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 06:30:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2018-11-07 06:30:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5090. [2018-11-07 06:30:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5090 states. [2018-11-07 06:30:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 6919 transitions. [2018-11-07 06:30:49,765 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 6919 transitions. Word has length 550 [2018-11-07 06:30:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:30:49,766 INFO L480 AbstractCegarLoop]: Abstraction has 5090 states and 6919 transitions. [2018-11-07 06:30:49,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:30:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 6919 transitions. [2018-11-07 06:30:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-11-07 06:30:49,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:30:49,785 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:30:49,786 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:30:49,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:49,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1977321543, now seen corresponding path program 1 times [2018-11-07 06:30:49,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:30:49,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:49,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:49,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:49,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:30:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:51,123 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:30:51,363 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 06:30:51,526 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-11-07 06:30:51,653 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-11-07 06:30:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 469 proven. 457 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-07 06:30:52,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:52,230 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:30:52,230 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 557 with the following transitions: [2018-11-07 06:30:52,231 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:30:52,233 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:30:52,233 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:31:02,712 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:31:02,713 INFO L272 AbstractInterpreter]: Visited 125 different actions 494 times. Merged at 8 different actions 30 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 06:31:02,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:31:02,721 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:31:02,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:02,721 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:31:02,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:31:02,732 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:31:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:02,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:31:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 823 proven. 2 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-11-07 06:31:03,368 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:31:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 463 proven. 111 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-07 06:31:04,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:31:04,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:31:04,100 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:31:04,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:31:04,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:31:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:31:04,103 INFO L87 Difference]: Start difference. First operand 5090 states and 6919 transitions. Second operand 17 states. [2018-11-07 06:31:08,211 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-11-07 06:31:09,989 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-11-07 06:31:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:31:11,045 INFO L93 Difference]: Finished difference Result 11242 states and 16091 transitions. [2018-11-07 06:31:11,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 06:31:11,046 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 556 [2018-11-07 06:31:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:31:11,073 INFO L225 Difference]: With dead ends: 11242 [2018-11-07 06:31:11,074 INFO L226 Difference]: Without dead ends: 5411 [2018-11-07 06:31:11,109 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1123 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 06:31:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2018-11-07 06:31:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5277. [2018-11-07 06:31:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5277 states. [2018-11-07 06:31:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 6277 transitions. [2018-11-07 06:31:11,248 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 6277 transitions. Word has length 556 [2018-11-07 06:31:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:31:11,249 INFO L480 AbstractCegarLoop]: Abstraction has 5277 states and 6277 transitions. [2018-11-07 06:31:11,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:31:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 6277 transitions. [2018-11-07 06:31:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-11-07 06:31:11,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:31:11,263 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:31:11,264 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:31:11,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:31:11,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1995290852, now seen corresponding path program 2 times [2018-11-07 06:31:11,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:31:11,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:11,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:31:11,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:11,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:31:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 501 proven. 111 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-07 06:31:12,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:12,061 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:31:12,062 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 06:31:12,062 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 06:31:12,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:12,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:31:12,070 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 06:31:12,071 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 06:31:12,172 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-07 06:31:12,172 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 06:31:12,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:31:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 601 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-11-07 06:31:12,463 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:31:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 601 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-11-07 06:31:12,990 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:31:12,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 06:31:12,990 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:31:12,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:31:12,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:31:12,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:31:12,992 INFO L87 Difference]: Start difference. First operand 5277 states and 6277 transitions. Second operand 9 states. [2018-11-07 06:31:17,024 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 06:31:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:31:20,073 INFO L93 Difference]: Finished difference Result 19844 states and 28214 transitions. [2018-11-07 06:31:20,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-07 06:31:20,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 661 [2018-11-07 06:31:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:31:20,165 INFO L225 Difference]: With dead ends: 19844 [2018-11-07 06:31:20,165 INFO L226 Difference]: Without dead ends: 14941 [2018-11-07 06:31:20,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1403 GetRequests, 1352 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=2026, Unknown=0, NotChecked=0, Total=2550 [2018-11-07 06:31:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14941 states. [2018-11-07 06:31:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14941 to 14664. [2018-11-07 06:31:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14664 states. [2018-11-07 06:31:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14664 states to 14664 states and 17607 transitions. [2018-11-07 06:31:20,712 INFO L78 Accepts]: Start accepts. Automaton has 14664 states and 17607 transitions. Word has length 661 [2018-11-07 06:31:20,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:31:20,713 INFO L480 AbstractCegarLoop]: Abstraction has 14664 states and 17607 transitions. [2018-11-07 06:31:20,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:31:20,713 INFO L276 IsEmpty]: Start isEmpty. Operand 14664 states and 17607 transitions. [2018-11-07 06:31:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2018-11-07 06:31:20,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:31:20,755 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:31:20,756 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:31:20,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:31:20,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1394874683, now seen corresponding path program 1 times [2018-11-07 06:31:20,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:31:20,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:20,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 06:31:20,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:20,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:31:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 508 proven. 175 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 06:31:21,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:21,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:31:21,951 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 733 with the following transitions: [2018-11-07 06:31:21,952 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [918], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:31:21,955 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:31:21,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:31:27,232 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:31:27,233 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:31:27,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:31:27,235 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:31:27,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:27,235 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:31:27,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:31:27,245 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:31:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:27,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:31:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 977 proven. 2 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-11-07 06:31:27,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:31:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 508 proven. 175 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 06:31:29,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:31:29,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 06:31:29,188 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:31:29,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 06:31:29,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 06:31:29,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:31:29,190 INFO L87 Difference]: Start difference. First operand 14664 states and 17607 transitions. Second operand 7 states. Received shutdown request... [2018-11-07 06:31:31,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 06:31:31,046 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:31:31,051 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:31:31,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:31:31 BoogieIcfgContainer [2018-11-07 06:31:31,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:31:31,052 INFO L168 Benchmark]: Toolchain (without parser) took 234770.99 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 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 526.3 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:31,053 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-07 06:31:31,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.43 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:31,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:31,055 INFO L168 Benchmark]: Boogie Preprocessor took 127.73 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. [2018-11-07 06:31:31,055 INFO L168 Benchmark]: RCFGBuilder took 3615.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:31,056 INFO L168 Benchmark]: TraceAbstraction took 230073.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 454.2 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:31,061 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 777.43 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 170.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.73 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 3615.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230073.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 454.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 94). Cancelled while BasicCegarLoop was constructing difference of abstraction (14664states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (14421 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 229.9s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 158.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1710 SDtfs, 19362 SDslu, 2897 SDs, 0 SdLazy, 25638 SolverSat, 4540 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.5s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 6828 GetRequests, 6588 SyntacticMatches, 7 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14664occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 42.0s AbstIntTime, 7 AbstIntIterations, 4 AbstIntStrong, 0.9972680116689103 AbsIntWeakeningRatio, 0.08729641693811074 AbsIntAvgWeakeningVarsNumRemoved, 16.102931596091207 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 558 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 6831 NumberOfCodeBlocks, 6499 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9311 ConstructedInterpolants, 0 QuantifiedInterpolants, 22653737 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3209 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 13383/15510 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown