java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:43:36,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:43:36,008 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:43:36,020 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:43:36,021 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:43:36,022 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:43:36,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:43:36,025 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:43:36,026 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:43:36,027 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:43:36,028 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:43:36,028 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:43:36,029 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:43:36,030 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:43:36,031 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:43:36,032 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:43:36,033 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:43:36,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:43:36,037 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:43:36,039 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:43:36,040 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:43:36,041 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:43:36,044 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:43:36,044 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:43:36,044 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:43:36,045 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:43:36,047 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:43:36,047 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:43:36,048 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:43:36,050 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:43:36,050 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:43:36,051 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:43:36,051 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:43:36,051 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:43:36,052 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:43:36,053 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:43:36,053 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:43:36,069 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:43:36,069 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:43:36,070 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:43:36,071 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:43:36,071 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:43:36,071 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:43:36,071 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:43:36,071 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:43:36,072 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:43:36,072 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:43:36,072 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:43:36,072 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:43:36,073 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:43:36,073 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:43:36,073 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:43:36,073 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:43:36,074 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:43:36,074 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:43:36,074 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:43:36,074 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:43:36,075 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:43:36,075 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:43:36,075 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:43:36,075 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:43:36,075 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:43:36,076 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:43:36,076 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:43:36,076 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:43:36,076 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:43:36,076 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:43:36,076 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:43:36,077 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:43:36,077 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:43:36,077 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:43:36,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:43:36,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:43:36,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:43:36,163 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:43:36,164 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:43:36,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 21:43:36,234 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e341dd26/53304b75950b4207975951641546a837/FLAG4168ae978 [2018-10-24 21:43:36,744 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:43:36,745 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 21:43:36,762 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e341dd26/53304b75950b4207975951641546a837/FLAG4168ae978 [2018-10-24 21:43:36,777 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6e341dd26/53304b75950b4207975951641546a837 [2018-10-24 21:43:36,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:43:36,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:43:36,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:43:36,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:43:36,795 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:43:36,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:43:36" (1/1) ... [2018-10-24 21:43:36,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e6c1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:36, skipping insertion in model container [2018-10-24 21:43:36,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:43:36" (1/1) ... [2018-10-24 21:43:36,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:43:36,890 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:43:37,404 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:43:37,409 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:43:37,548 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:43:37,573 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:43:37,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37 WrapperNode [2018-10-24 21:43:37,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:43:37,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:43:37,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:43:37,576 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:43:37,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:43:37,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:43:37,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:43:37,803 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:43:37,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... [2018-10-24 21:43:37,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:43:37,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:43:37,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:43:37,908 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:43:37,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:43:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:43:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:43:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:43:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:43:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:43:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:43:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:43:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:43:41,499 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:43:41,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:43:41 BoogieIcfgContainer [2018-10-24 21:43:41,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:43:41,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:43:41,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:43:41,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:43:41,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:43:36" (1/3) ... [2018-10-24 21:43:41,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb5d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:43:41, skipping insertion in model container [2018-10-24 21:43:41,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:43:37" (2/3) ... [2018-10-24 21:43:41,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb5d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:43:41, skipping insertion in model container [2018-10-24 21:43:41,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:43:41" (3/3) ... [2018-10-24 21:43:41,511 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label53_true-unreach-call_false-termination.c [2018-10-24 21:43:41,521 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:43:41,529 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:43:41,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:43:41,591 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:43:41,591 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:43:41,591 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:43:41,592 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:43:41,592 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:43:41,594 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:43:41,594 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:43:41,594 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:43:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:43:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 21:43:41,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:41,631 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:43:41,634 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:41,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:41,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1477043892, now seen corresponding path program 1 times [2018-10-24 21:43:41,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:41,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:41,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:41,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:41,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:42,081 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:43:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:42,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:43:42,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:43:42,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:42,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:43:42,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:43:42,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:43:42,142 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:43:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:44,011 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:43:44,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:43:44,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-10-24 21:43:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:44,036 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:43:44,036 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:43:44,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:43:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:43:44,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:43:44,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:43:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 21:43:44,150 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 56 [2018-10-24 21:43:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:44,151 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 21:43:44,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:43:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 21:43:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 21:43:44,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:44,160 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:43:44,160 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:44,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:44,161 INFO L82 PathProgramCache]: Analyzing trace with hash 167474839, now seen corresponding path program 1 times [2018-10-24 21:43:44,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:44,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:44,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:44,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:44,163 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:44,534 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:43:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:44,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:43:44,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:43:44,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:44,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:43:44,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:43:44,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:43:44,606 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 21:43:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:46,808 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 21:43:46,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:43:46,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 21:43:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:46,816 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 21:43:46,816 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 21:43:46,818 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:43:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 21:43:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 21:43:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 21:43:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 21:43:46,858 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 143 [2018-10-24 21:43:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:46,859 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 21:43:46,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:43:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 21:43:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 21:43:46,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:46,865 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:43:46,865 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:46,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1433253212, now seen corresponding path program 1 times [2018-10-24 21:43:46,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:46,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:46,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:46,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:46,867 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:47,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:43:47,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:43:47,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:47,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:43:47,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:43:47,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:43:47,110 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 21:43:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:50,835 INFO L93 Difference]: Finished difference Result 2350 states and 4002 transitions. [2018-10-24 21:43:50,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:43:50,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-24 21:43:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:50,858 INFO L225 Difference]: With dead ends: 2350 [2018-10-24 21:43:50,858 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 21:43:50,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:43:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 21:43:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 21:43:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 21:43:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2678 transitions. [2018-10-24 21:43:50,951 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2678 transitions. Word has length 152 [2018-10-24 21:43:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:50,952 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2678 transitions. [2018-10-24 21:43:50,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:43:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2678 transitions. [2018-10-24 21:43:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-24 21:43:50,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:50,964 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:43:50,964 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:50,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash -830750464, now seen corresponding path program 1 times [2018-10-24 21:43:50,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:50,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:50,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:50,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:50,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:51,571 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-24 21:43:51,879 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-24 21:43:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:43:52,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:43:52,460 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:43:52,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-24 21:43:52,463 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [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], [562], [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], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:43:52,539 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:43:52,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:43:54,263 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:43:58,302 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:43:58,304 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:43:58,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:58,338 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:44:01,140 INFO L232 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 78.05% of their original sizes. [2018-10-24 21:44:01,140 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:44:01,521 INFO L413 sIntCurrentIteration]: We have 255 unified AI predicates [2018-10-24 21:44:01,522 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:44:01,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:44:01,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-24 21:44:01,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:01,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:44:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:44:01,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:44:01,525 INFO L87 Difference]: Start difference. First operand 1731 states and 2678 transitions. Second operand 7 states. [2018-10-24 21:44:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:44:24,790 INFO L93 Difference]: Finished difference Result 3641 states and 5641 transitions. [2018-10-24 21:44:24,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:44:24,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2018-10-24 21:44:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:44:24,803 INFO L225 Difference]: With dead ends: 3641 [2018-10-24 21:44:24,803 INFO L226 Difference]: Without dead ends: 1916 [2018-10-24 21:44:24,812 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:44:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-24 21:44:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-24 21:44:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 21:44:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2869 transitions. [2018-10-24 21:44:24,868 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2869 transitions. Word has length 256 [2018-10-24 21:44:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:44:24,869 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2869 transitions. [2018-10-24 21:44:24,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:44:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2869 transitions. [2018-10-24 21:44:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-24 21:44:24,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:44:24,880 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:44:24,880 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:44:24,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1183303121, now seen corresponding path program 1 times [2018-10-24 21:44:24,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:44:24,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:24,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:44:24,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:44:24,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:44:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:44:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 235 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:44:25,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:44:25,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:44:25,683 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 342 with the following transitions: [2018-10-24 21:44:25,683 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [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], [562], [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], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:44:25,689 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:44:25,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:44:27,048 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:44:32,873 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:44:32,873 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. [2018-10-24 21:44:32,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:44:32,879 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:44:35,757 INFO L232 lantSequenceWeakener]: Weakened 84 states. On average, predicates are now at 78.03% of their original sizes. [2018-10-24 21:44:35,757 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:45:22,606 INFO L413 sIntCurrentIteration]: We have 340 unified AI predicates [2018-10-24 21:45:22,607 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:45:22,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:45:22,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-10-24 21:45:22,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:22,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:45:22,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:45:22,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:45:22,609 INFO L87 Difference]: Start difference. First operand 1914 states and 2869 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:47:42,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:47:42,972 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:47:42,976 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:47:42,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:47:42 BoogieIcfgContainer [2018-10-24 21:47:42,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:47:42,978 INFO L168 Benchmark]: Toolchain (without parser) took 246189.07 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:47:42,979 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:47:42,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.45 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. [2018-10-24 21:47:42,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:42,982 INFO L168 Benchmark]: Boogie Preprocessor took 104.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:42,982 INFO L168 Benchmark]: RCFGBuilder took 3592.45 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: 131.5 MB). Peak memory consumption was 131.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:47:42,983 INFO L168 Benchmark]: TraceAbstraction took 241475.36 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -787.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:47:42,988 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 783.45 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 227.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3592.45 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: 131.5 MB). Peak memory consumption was 131.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241475.36 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -787.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 151). Cancelled while BasicCegarLoop was constructing difference of abstraction (1914states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (2700 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 241.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 171.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 727 SDtfs, 4828 SDslu, 500 SDs, 0 SdLazy, 5737 SolverSat, 1159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 622 GetRequests, 522 SyntacticMatches, 63 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 48.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1914occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958927049080502 AbsIntWeakeningRatio, 0.09747899159663866 AbsIntAvgWeakeningVarsNumRemoved, 600.3983193277311 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 948 NumberOfCodeBlocks, 948 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 943 ConstructedInterpolants, 0 QuantifiedInterpolants, 2796814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 521/687 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown