java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label42_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:27:55,272 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:27:55,279 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:27:55,292 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:27:55,292 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:27:55,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:27:55,295 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:27:55,296 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:27:55,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:27:55,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:27:55,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:27:55,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:27:55,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:27:55,302 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:27:55,303 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:27:55,304 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:27:55,305 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:27:55,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:27:55,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:27:55,310 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:27:55,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:27:55,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:27:55,315 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:27:55,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:27:55,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:27:55,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:27:55,320 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:27:55,321 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:27:55,322 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:27:55,323 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:27:55,323 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:27:55,324 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:27:55,324 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:27:55,324 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:27:55,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:27:55,331 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:27:55,332 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:27:55,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:27:55,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:27:55,355 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:27:55,356 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:27:55,356 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:27:55,356 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:27:55,356 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:27:55,356 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:27:55,357 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:27:55,357 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:27:55,357 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:27:55,357 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:27:55,358 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:27:55,358 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:27:55,358 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:27:55,358 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:27:55,359 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:27:55,359 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:27:55,359 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:27:55,359 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:27:55,359 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:27:55,360 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:27:55,360 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:27:55,360 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:27:55,360 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:27:55,360 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:27:55,361 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:27:55,361 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:27:55,361 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:27:55,361 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:27:55,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:27:55,361 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:27:55,362 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:27:55,362 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:27:55,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:27:55,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:27:55,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:27:55,440 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:27:55,440 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:27:55,441 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label42_true-unreach-call_false-termination.c [2018-10-27 14:27:55,502 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/451a7e120/4ecec952e3d947039e76241d005c17a6/FLAGd70287a1c [2018-10-27 14:27:56,074 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:27:56,075 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label42_true-unreach-call_false-termination.c [2018-10-27 14:27:56,093 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/451a7e120/4ecec952e3d947039e76241d005c17a6/FLAGd70287a1c [2018-10-27 14:27:56,116 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/451a7e120/4ecec952e3d947039e76241d005c17a6 [2018-10-27 14:27:56,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:27:56,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:27:56,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:27:56,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:27:56,135 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:27:56,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:56,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bfd507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56, skipping insertion in model container [2018-10-27 14:27:56,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:56,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:27:56,223 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:27:56,712 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:27:56,717 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:27:56,901 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:27:56,923 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:27:56,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56 WrapperNode [2018-10-27 14:27:56,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:27:56,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:27:56,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:27:56,925 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:27:56,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:56,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:27:57,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:27:57,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:27:57,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:27:57,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... [2018-10-27 14:27:57,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:27:57,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:27:57,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:27:57,290 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:27:57,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:27:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:27:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:27:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:27:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:27:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:27:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:27:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:27:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:28:00,874 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:28:00,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:28:00 BoogieIcfgContainer [2018-10-27 14:28:00,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:28:00,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:28:00,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:28:00,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:28:00,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:27:56" (1/3) ... [2018-10-27 14:28:00,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690d9ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:28:00, skipping insertion in model container [2018-10-27 14:28:00,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:56" (2/3) ... [2018-10-27 14:28:00,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690d9ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:28:00, skipping insertion in model container [2018-10-27 14:28:00,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:28:00" (3/3) ... [2018-10-27 14:28:00,885 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label42_true-unreach-call_false-termination.c [2018-10-27 14:28:00,896 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:28:00,913 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:28:00,931 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:28:00,978 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:28:00,978 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:28:00,979 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:28:00,979 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:28:00,979 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:28:00,979 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:28:00,979 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:28:00,980 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:28:01,007 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 14:28:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-27 14:28:01,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:28:01,018 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:28:01,021 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:28:01,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:28:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1589650361, now seen corresponding path program 1 times [2018-10-27 14:28:01,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:28:01,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:01,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:28:01,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:01,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:28:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:28:01,459 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:28:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:28:01,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:28:01,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:28:01,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:28:01,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:28:01,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:28:01,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:28:01,613 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 14:28:03,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:28:03,314 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 14:28:03,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:28:03,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-10-27 14:28:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:28:03,336 INFO L225 Difference]: With dead ends: 691 [2018-10-27 14:28:03,337 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 14:28:03,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:28:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 14:28:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 14:28:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 14:28:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 14:28:03,432 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 49 [2018-10-27 14:28:03,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:28:03,433 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 14:28:03,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:28:03,434 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 14:28:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 14:28:03,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:28:03,443 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:28:03,443 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:28:03,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:28:03,444 INFO L82 PathProgramCache]: Analyzing trace with hash 192752175, now seen corresponding path program 1 times [2018-10-27 14:28:03,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:28:03,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:03,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:28:03,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:03,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:28:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:28:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:28:03,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:28:03,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:28:03,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:28:03,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:28:03,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:28:03,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:28:03,801 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 14:28:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:28:05,931 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-27 14:28:05,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:28:05,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-27 14:28:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:28:05,939 INFO L225 Difference]: With dead ends: 1062 [2018-10-27 14:28:05,939 INFO L226 Difference]: Without dead ends: 634 [2018-10-27 14:28:05,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:28:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-27 14:28:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-27 14:28:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-27 14:28:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-27 14:28:05,983 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 136 [2018-10-27 14:28:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:28:05,984 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-27 14:28:05,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:28:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-27 14:28:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 14:28:05,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:28:05,989 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:28:05,990 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:28:05,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:28:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1678139032, now seen corresponding path program 1 times [2018-10-27 14:28:05,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:28:05,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:05,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:28:05,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:05,992 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:28:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:28:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:28:06,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:28:06,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:28:06,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:28:06,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:28:06,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:28:06,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:28:06,201 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-27 14:28:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:28:10,772 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-10-27 14:28:10,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:28:10,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2018-10-27 14:28:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:28:10,799 INFO L225 Difference]: With dead ends: 2352 [2018-10-27 14:28:10,800 INFO L226 Difference]: Without dead ends: 1733 [2018-10-27 14:28:10,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:28:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-10-27 14:28:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-10-27 14:28:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-27 14:28:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-10-27 14:28:10,897 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 145 [2018-10-27 14:28:10,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:28:10,898 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-10-27 14:28:10,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:28:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-10-27 14:28:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-27 14:28:10,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:28:10,915 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:28:10,916 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:28:10,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:28:10,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1304221998, now seen corresponding path program 1 times [2018-10-27 14:28:10,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:28:10,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:10,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:28:10,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:28:10,918 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:28:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:28:11,472 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-27 14:28:11,830 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 14:28:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 84 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:28:12,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:28:12,141 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:28:12,142 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-27 14:28:12,144 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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] [2018-10-27 14:28:12,192 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:28:12,193 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:28:13,128 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:28:22,945 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:28:22,947 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:28:22,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:28:22,961 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:28:32,363 INFO L227 lantSequenceWeakener]: Weakened 265 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-27 14:28:32,363 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:28:32,509 INFO L415 sIntCurrentIteration]: We unified 273 AI predicates to 273 [2018-10-27 14:28:32,510 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:28:32,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:28:32,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-27 14:28:32,511 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:28:32,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 14:28:32,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 14:28:32,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 14:28:32,513 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown