java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:24:14,399 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:24:14,401 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:24:14,417 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:24:14,418 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:24:14,419 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:24:14,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:24:14,422 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:24:14,424 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:24:14,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:24:14,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:24:14,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:24:14,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:24:14,427 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:24:14,429 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:24:14,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:24:14,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:24:14,432 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:24:14,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:24:14,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:24:14,437 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:24:14,438 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:24:14,440 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:24:14,441 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:24:14,441 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:24:14,442 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:24:14,443 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:24:14,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:24:14,444 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:24:14,446 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:24:14,446 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:24:14,447 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:24:14,447 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:24:14,447 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:24:14,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:24:14,449 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:24:14,449 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:24:14,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:24:14,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:24:14,475 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:24:14,475 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:24:14,475 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:24:14,475 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:24:14,476 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:24:14,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:24:14,479 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:24:14,479 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:24:14,479 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:24:14,479 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:24:14,480 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:24:14,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:24:14,481 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:24:14,481 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:24:14,481 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:24:14,481 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:24:14,481 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:24:14,481 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:24:14,482 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:24:14,482 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:24:14,482 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:24:14,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:24:14,484 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:24:14,484 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:24:14,484 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:24:14,484 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:24:14,484 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:24:14,486 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:24:14,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:24:14,486 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:24:14,486 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:24:14,487 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:24:14,544 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:24:14,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:24:14,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:24:14,562 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:24:14,563 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:24:14,564 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-11-07 03:24:14,626 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ded420b4/f2d0f44aee0d4ebbb89adf74d62b3a4e/FLAGee1dfcd18 [2018-11-07 03:24:15,204 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:24:15,208 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-11-07 03:24:15,234 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ded420b4/f2d0f44aee0d4ebbb89adf74d62b3a4e/FLAGee1dfcd18 [2018-11-07 03:24:15,257 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ded420b4/f2d0f44aee0d4ebbb89adf74d62b3a4e [2018-11-07 03:24:15,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:24:15,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:24:15,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:24:15,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:24:15,279 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:24:15,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:15" (1/1) ... [2018-11-07 03:24:15,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b49af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:15, skipping insertion in model container [2018-11-07 03:24:15,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:15" (1/1) ... [2018-11-07 03:24:15,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:24:15,384 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:24:15,960 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:24:15,965 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:24:16,143 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:24:16,174 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:24:16,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16 WrapperNode [2018-11-07 03:24:16,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:24:16,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:24:16,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:24:16,176 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:24:16,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:24:16,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:24:16,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:24:16,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:24:16,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... [2018-11-07 03:24:16,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:24:16,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:24:16,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:24:16,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:24:16,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:24:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:24:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:24:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:24:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:24:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:24:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:24:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:24:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:24:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:24:20,032 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:24:20,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:20 BoogieIcfgContainer [2018-11-07 03:24:20,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:24:20,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:24:20,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:24:20,039 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:24:20,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:24:15" (1/3) ... [2018-11-07 03:24:20,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@943ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:20, skipping insertion in model container [2018-11-07 03:24:20,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:16" (2/3) ... [2018-11-07 03:24:20,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@943ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:20, skipping insertion in model container [2018-11-07 03:24:20,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:20" (3/3) ... [2018-11-07 03:24:20,043 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-11-07 03:24:20,054 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:24:20,064 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:24:20,083 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:24:20,123 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:24:20,123 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:24:20,123 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:24:20,123 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:24:20,124 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:24:20,124 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:24:20,124 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:24:20,124 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:24:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 03:24:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 03:24:20,160 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:20,162 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] [2018-11-07 03:24:20,165 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:20,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:20,172 INFO L82 PathProgramCache]: Analyzing trace with hash -989245532, now seen corresponding path program 1 times [2018-11-07 03:24:20,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:20,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:20,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:20,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:20,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:24:20,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:20,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:24:20,710 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:20,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:24:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:24:20,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:20,737 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 03:24:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:23,520 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 03:24:23,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:24:23,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-07 03:24:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:23,546 INFO L225 Difference]: With dead ends: 894 [2018-11-07 03:24:23,546 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 03:24:23,556 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 03:24:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 03:24:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 03:24:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 03:24:23,648 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 54 [2018-11-07 03:24:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:23,649 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 03:24:23,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:24:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 03:24:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 03:24:23,658 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:23,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:24:23,659 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:23,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:23,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1614354860, now seen corresponding path program 1 times [2018-11-07 03:24:23,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:23,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:23,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:23,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:23,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:24:24,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:24,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:24:24,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:24,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:24:24,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:24:24,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:24,065 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-11-07 03:24:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:26,815 INFO L93 Difference]: Finished difference Result 1594 states and 2533 transitions. [2018-11-07 03:24:26,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:24:26,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-11-07 03:24:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:26,833 INFO L225 Difference]: With dead ends: 1594 [2018-11-07 03:24:26,834 INFO L226 Difference]: Without dead ends: 780 [2018-11-07 03:24:26,841 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-11-07 03:24:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-11-07 03:24:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-11-07 03:24:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1152 transitions. [2018-11-07 03:24:26,905 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1152 transitions. Word has length 138 [2018-11-07 03:24:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:26,906 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 1152 transitions. [2018-11-07 03:24:26,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:24:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1152 transitions. [2018-11-07 03:24:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 03:24:26,921 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:26,922 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:24:26,923 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:26,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:26,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1391925776, now seen corresponding path program 1 times [2018-11-07 03:24:26,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:26,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:26,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:26,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:26,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 03:24:27,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:27,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:24:27,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:27,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:24:27,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:24:27,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:27,262 INFO L87 Difference]: Start difference. First operand 780 states and 1152 transitions. Second operand 4 states. [2018-11-07 03:24:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:29,913 INFO L93 Difference]: Finished difference Result 3018 states and 4610 transitions. [2018-11-07 03:24:29,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:24:29,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-11-07 03:24:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:29,937 INFO L225 Difference]: With dead ends: 3018 [2018-11-07 03:24:29,938 INFO L226 Difference]: Without dead ends: 2244 [2018-11-07 03:24:29,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2018-11-07 03:24:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2018-11-07 03:24:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-11-07 03:24:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3149 transitions. [2018-11-07 03:24:30,044 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3149 transitions. Word has length 224 [2018-11-07 03:24:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:30,045 INFO L480 AbstractCegarLoop]: Abstraction has 2244 states and 3149 transitions. [2018-11-07 03:24:30,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:24:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3149 transitions. [2018-11-07 03:24:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-07 03:24:30,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:30,063 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:24:30,063 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:30,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:30,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1136291269, now seen corresponding path program 1 times [2018-11-07 03:24:30,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:30,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:30,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:30,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:30,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:30,677 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 03:24:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 94 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:24:31,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:24:31,212 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:24:31,213 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-07 03:24:31,216 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], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:24:31,304 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:24:31,304 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:24:34,021 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:24:38,203 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:24:38,205 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:24:38,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:38,220 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:24:41,179 INFO L227 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 77.86% of their original sizes. [2018-11-07 03:24:41,179 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:24:41,773 INFO L415 sIntCurrentIteration]: We unified 318 AI predicates to 318 [2018-11-07 03:24:41,773 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:24:41,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:24:41,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 03:24:41,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:41,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:24:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:24:41,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:24:41,776 INFO L87 Difference]: Start difference. First operand 2244 states and 3149 transitions. Second operand 8 states. [2018-11-07 03:24:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:55,670 INFO L93 Difference]: Finished difference Result 4667 states and 6526 transitions. [2018-11-07 03:24:55,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:24:55,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 319 [2018-11-07 03:24:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:55,691 INFO L225 Difference]: With dead ends: 4667 [2018-11-07 03:24:55,692 INFO L226 Difference]: Without dead ends: 2429 [2018-11-07 03:24:55,706 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:24:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-11-07 03:24:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2018-11-07 03:24:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2018-11-07 03:24:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3340 transitions. [2018-11-07 03:24:55,785 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3340 transitions. Word has length 319 [2018-11-07 03:24:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:55,786 INFO L480 AbstractCegarLoop]: Abstraction has 2427 states and 3340 transitions. [2018-11-07 03:24:55,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 03:24:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3340 transitions. [2018-11-07 03:24:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-07 03:24:55,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:55,806 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:24:55,806 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:55,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2012329804, now seen corresponding path program 1 times [2018-11-07 03:24:55,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:55,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:55,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:55,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:55,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:56,409 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:24:56,614 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 03:24:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 229 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:24:57,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:24:57,283 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:24:57,284 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-11-07 03:24:57,284 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], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:24:57,291 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:24:57,292 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:24:59,611 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:25:06,139 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:25:06,140 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:25:06,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:25:06,173 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:25:09,480 INFO L227 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 78.12% of their original sizes. [2018-11-07 03:25:09,481 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:25:56,699 INFO L415 sIntCurrentIteration]: We unified 403 AI predicates to 403 [2018-11-07 03:25:56,699 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:25:56,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:25:56,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-11-07 03:25:56,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:25:56,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 03:25:56,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 03:25:56,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-07 03:25:56,701 INFO L87 Difference]: Start difference. First operand 2427 states and 3340 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 03:28:11,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 03:28:11,723 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:28:11,728 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:28:11,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:28:11 BoogieIcfgContainer [2018-11-07 03:28:11,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:28:11,729 INFO L168 Benchmark]: Toolchain (without parser) took 236458.07 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:28:11,730 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-07 03:28:11,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 901.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:11,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -815.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:11,733 INFO L168 Benchmark]: Boogie Preprocessor took 135.14 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:28:11,733 INFO L168 Benchmark]: RCFGBuilder took 3558.29 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:11,734 INFO L168 Benchmark]: TraceAbstraction took 231693.50 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -880.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:28:11,739 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 901.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 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 163.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.4 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -815.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.14 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3558.29 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231693.50 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -880.5 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: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (2427states) and FLOYD_HOARE automaton (currently 20 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (901 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 231.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 157.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 636 SDtfs, 2738 SDslu, 386 SDs, 0 SdLazy, 4980 SolverSat, 1082 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 747 GetRequests, 649 SyntacticMatches, 60 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 49.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2427occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9966104846328568 AbsIntWeakeningRatio, 0.08044382801664356 AbsIntAvgWeakeningVarsNumRemoved, 653.6324549237171 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 201 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1139 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1134 ConstructedInterpolants, 0 QuantifiedInterpolants, 2745835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 548/846 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown