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/Problem18_label57_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:25:58,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:25:58,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:25:58,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:25:58,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:25:58,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:25:58,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:25:58,195 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:25:58,197 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:25:58,199 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:25:58,200 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:25:58,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:25:58,203 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:25:58,206 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:25:58,214 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:25:58,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:25:58,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:25:58,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:25:58,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:25:58,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:25:58,225 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:25:58,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:25:58,231 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:25:58,231 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:25:58,231 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:25:58,232 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:25:58,233 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:25:58,236 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:25:58,237 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:25:58,238 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:25:58,238 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:25:58,241 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:25:58,241 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:25:58,241 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:25:58,242 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:25:58,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:25:58,243 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 [2018-10-27 00:25:58,267 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:25:58,267 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:25:58,268 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:25:58,268 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:25:58,268 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:25:58,269 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:25:58,271 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:25:58,272 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:25:58,272 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:25:58,272 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:25:58,273 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:25:58,273 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:25:58,274 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:25:58,274 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:25:58,274 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:25:58,274 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:25:58,274 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:25:58,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:25:58,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:25:58,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:25:58,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:25:58,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:25:58,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:25:58,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:25:58,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:25:58,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:25:58,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:25:58,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:25:58,279 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:25:58,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:25:58,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:25:58,279 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:25:58,279 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:25:58,280 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:25:58,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:25:58,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:25:58,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:25:58,371 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:25:58,372 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:25:58,373 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-10-27 00:25:58,458 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01c721697/1bd94f08e4a341c4bdebb70ea580336e/FLAG16af8c357 [2018-10-27 00:25:59,268 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:25:59,269 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label57_false-unreach-call.c [2018-10-27 00:25:59,303 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01c721697/1bd94f08e4a341c4bdebb70ea580336e/FLAG16af8c357 [2018-10-27 00:25:59,322 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/01c721697/1bd94f08e4a341c4bdebb70ea580336e [2018-10-27 00:25:59,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:25:59,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:25:59,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:25:59,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:25:59,342 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:25:59,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:59" (1/1) ... [2018-10-27 00:25:59,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa64f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:59, skipping insertion in model container [2018-10-27 00:25:59,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:59" (1/1) ... [2018-10-27 00:25:59,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:25:59,501 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:26:00,638 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:26:00,646 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:26:01,122 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:26:01,153 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:26:01,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01 WrapperNode [2018-10-27 00:26:01,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:26:01,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:26:01,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:26:01,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:26:01,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:26:01,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:26:01,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:26:01,626 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:26:01,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (1/1) ... [2018-10-27 00:26:01,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:26:01,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:26:01,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:26:01,880 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:26:01,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (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 00:26:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:26:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:26:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 00:26:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 00:26:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:26:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:26:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:26:01,956 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:26:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:26:01,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:26:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:26:01,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:26:10,871 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:26:10,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:26:10 BoogieIcfgContainer [2018-10-27 00:26:10,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:26:10,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:26:10,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:26:10,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:26:10,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:25:59" (1/3) ... [2018-10-27 00:26:10,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7613b851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:26:10, skipping insertion in model container [2018-10-27 00:26:10,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:01" (2/3) ... [2018-10-27 00:26:10,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7613b851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:26:10, skipping insertion in model container [2018-10-27 00:26:10,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:26:10" (3/3) ... [2018-10-27 00:26:10,888 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label57_false-unreach-call.c [2018-10-27 00:26:10,900 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:26:10,909 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:26:10,928 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:26:10,977 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:26:10,977 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:26:10,977 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:26:10,977 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:26:10,977 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:26:10,978 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:26:10,978 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:26:10,978 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:26:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 00:26:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 00:26:11,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:26:11,029 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:26:11,031 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:26:11,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:26:11,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1758437031, now seen corresponding path program 1 times [2018-10-27 00:26:11,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:26:11,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:11,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:26:11,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:11,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:26:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:26:11,404 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:26:11,504 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 00:26:11,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:26:11,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:26:11,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:26:11,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:26:11,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:26:11,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:26:11,534 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 00:26:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:26:20,359 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 00:26:20,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:26:20,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-27 00:26:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:26:20,398 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 00:26:20,398 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 00:26:20,411 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 00:26:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 00:26:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 00:26:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 00:26:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-27 00:26:20,607 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 15 [2018-10-27 00:26:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:26:20,608 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-27 00:26:20,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:26:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-27 00:26:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-27 00:26:20,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:26:20,615 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:26:20,616 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:26:20,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:26:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1339520165, now seen corresponding path program 1 times [2018-10-27 00:26:20,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:26:20,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:20,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:26:20,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:20,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:26:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:26:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:26:21,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:26:21,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:26:21,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:26:21,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:26:21,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:26:21,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:26:21,016 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-27 00:26:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:26:31,802 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-27 00:26:31,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:26:31,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-10-27 00:26:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:26:31,824 INFO L225 Difference]: With dead ends: 4422 [2018-10-27 00:26:31,824 INFO L226 Difference]: Without dead ends: 2954 [2018-10-27 00:26:31,829 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 00:26:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-27 00:26:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-27 00:26:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 00:26:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-10-27 00:26:31,942 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 90 [2018-10-27 00:26:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:26:31,943 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-10-27 00:26:31,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:26:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-10-27 00:26:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 00:26:31,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:26:31,947 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:26:31,947 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:26:31,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:26:31,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1432897539, now seen corresponding path program 1 times [2018-10-27 00:26:31,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:26:31,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:31,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:26:31,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:31,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:26:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:26:32,219 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:26:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:26:32,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:26:32,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:26:32,305 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:26:32,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:26:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:26:32,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:26:32,307 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-10-27 00:26:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:26:38,020 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-10-27 00:26:38,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:26:38,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 00:26:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:26:38,050 INFO L225 Difference]: With dead ends: 7337 [2018-10-27 00:26:38,051 INFO L226 Difference]: Without dead ends: 4415 [2018-10-27 00:26:38,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:26:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-10-27 00:26:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-10-27 00:26:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-10-27 00:26:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-10-27 00:26:38,179 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 102 [2018-10-27 00:26:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:26:38,179 INFO L481 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-10-27 00:26:38,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:26:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-10-27 00:26:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 00:26:38,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:26:38,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:26:38,183 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:26:38,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:26:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash -567537364, now seen corresponding path program 1 times [2018-10-27 00:26:38,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:26:38,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:38,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:26:38,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:26:38,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:26:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:26:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:26:38,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:26:38,443 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:26:38,444 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-10-27 00:26:38,446 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1643], [1645], [1648], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 00:26:38,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:26:38,523 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:26:41,453 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:26:41,573 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:26:41,575 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 00:26:41,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:26:41,589 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:26:42,926 INFO L227 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 77.27% of their original sizes. [2018-10-27 00:26:42,926 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:26:43,090 INFO L415 sIntCurrentIteration]: We unified 126 AI predicates to 126 [2018-10-27 00:26:43,091 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:26:43,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:26:43,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-27 00:26:43,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:26:43,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 00:26:43,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 00:26:43,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:26:43,094 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 7 states. [2018-10-27 00:28:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:28:27,536 INFO L93 Difference]: Finished difference Result 9493 states and 13867 transitions. [2018-10-27 00:28:27,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:28:27,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2018-10-27 00:28:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:28:27,558 INFO L225 Difference]: With dead ends: 9493 [2018-10-27 00:28:27,559 INFO L226 Difference]: Without dead ends: 5102 [2018-10-27 00:28:27,571 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:28:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-10-27 00:28:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5100. [2018-10-27 00:28:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5100 states. [2018-10-27 00:28:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 7209 transitions. [2018-10-27 00:28:27,691 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 7209 transitions. Word has length 127 [2018-10-27 00:28:27,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:28:27,693 INFO L481 AbstractCegarLoop]: Abstraction has 5100 states and 7209 transitions. [2018-10-27 00:28:27,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 00:28:27,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 7209 transitions. [2018-10-27 00:28:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-27 00:28:27,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:28:27,702 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:28:27,704 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:28:27,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:28:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash 414092554, now seen corresponding path program 1 times [2018-10-27 00:28:27,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:28:27,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:28:27,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:28:27,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:28:27,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:28:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:28:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 70 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:28:28,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:28:28,424 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:28:28,424 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-10-27 00:28:28,425 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1643], [1645], [1648], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2284], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 00:28:28,441 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:28:28,442 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:28:30,591 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:28:40,452 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:28:40,453 INFO L272 AbstractInterpreter]: Visited 195 different actions 383 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:28:40,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:28:40,463 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:28:43,722 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 77.73% of their original sizes. [2018-10-27 00:28:43,723 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:29:20,647 INFO L415 sIntCurrentIteration]: We unified 313 AI predicates to 313 [2018-10-27 00:29:20,648 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:29:20,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:29:20,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-10-27 00:29:20,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:29:20,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 00:29:20,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 00:29:20,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-10-27 00:29:20,651 INFO L87 Difference]: Start difference. First operand 5100 states and 7209 transitions. Second operand 17 states. Received shutdown request... [2018-10-27 00:29:49,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 00:29:49,515 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:29:49,522 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:29:49,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:29:49 BoogieIcfgContainer [2018-10-27 00:29:49,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:29:49,524 INFO L168 Benchmark]: Toolchain (without parser) took 230188.83 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.3 GB in the beginning and 1.8 GB in the end (delta: -420.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 00:29:49,525 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:29:49,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1817.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 00:29:49,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 470.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 706.7 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -885.2 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:29:49,529 INFO L168 Benchmark]: Boogie Preprocessor took 253.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2018-10-27 00:29:49,533 INFO L168 Benchmark]: RCFGBuilder took 8995.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 523.2 MB). Peak memory consumption was 523.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:29:49,534 INFO L168 Benchmark]: TraceAbstraction took 218646.70 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -220.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 00:29:49,543 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1817.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 470.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 706.7 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -885.2 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 253.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8995.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 523.2 MB). Peak memory consumption was 523.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218646.70 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: -220.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (5100states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (96 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 218.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 158.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1125 SDtfs, 7699 SDslu, 658 SDs, 0 SdLazy, 12729 SolverSat, 3674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 469 GetRequests, 373 SyntacticMatches, 56 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5100occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9954029249612095 AbsIntWeakeningRatio, 0.10478359908883828 AbsIntAvgWeakeningVarsNumRemoved, 268.3644646924829 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 643 ConstructedInterpolants, 0 QuantifiedInterpolants, 1265541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 86/152 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown