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/Problem01_label41_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:04:18,391 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:04:18,393 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:04:18,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:04:18,406 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:04:18,407 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:04:18,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:04:18,410 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:04:18,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:04:18,412 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:04:18,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:04:18,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:04:18,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:04:18,416 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:04:18,417 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:04:18,418 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:04:18,418 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:04:18,420 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:04:18,422 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:04:18,424 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:04:18,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:04:18,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:04:18,429 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 01:04:18,429 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 01:04:18,429 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 01:04:18,430 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 01:04:18,431 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 01:04:18,432 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 01:04:18,433 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 01:04:18,434 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 01:04:18,434 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 01:04:18,435 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 01:04:18,435 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:04:18,435 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:04:18,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:04:18,443 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:04:18,444 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:04:18,478 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:04:18,478 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:04:18,479 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:04:18,479 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:04:18,479 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:04:18,479 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:04:18,480 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:04:18,482 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:04:18,483 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:04:18,483 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:04:18,483 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:04:18,483 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:04:18,484 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:04:18,484 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:04:18,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:04:18,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:04:18,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:04:18,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:04:18,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:04:18,486 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:04:18,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:04:18,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:04:18,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:04:18,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:04:18,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:04:18,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:04:18,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:04:18,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:04:18,489 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:04:18,489 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:04:18,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:04:18,489 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:04:18,489 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:04:18,489 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:04:18,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:04:18,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:04:18,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:04:18,560 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:04:18,561 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:04:18,562 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41_true-unreach-call_false-termination.c [2018-11-07 01:04:18,629 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944d614d3/5ff664e2dc094dcb9c4d2f2aae6516a1/FLAGa80d1443e [2018-11-07 01:04:19,247 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:04:19,249 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label41_true-unreach-call_false-termination.c [2018-11-07 01:04:19,266 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944d614d3/5ff664e2dc094dcb9c4d2f2aae6516a1/FLAGa80d1443e [2018-11-07 01:04:19,282 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/944d614d3/5ff664e2dc094dcb9c4d2f2aae6516a1 [2018-11-07 01:04:19,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:04:19,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:04:19,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:04:19,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:04:19,301 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:04:19,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:19" (1/1) ... [2018-11-07 01:04:19,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b7df7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:19, skipping insertion in model container [2018-11-07 01:04:19,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:19" (1/1) ... [2018-11-07 01:04:19,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:04:19,395 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:04:19,946 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:04:19,951 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:04:20,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:04:20,084 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:04:20,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20 WrapperNode [2018-11-07 01:04:20,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:04:20,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:04:20,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:04:20,086 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:04:20,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:04:20,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:04:20,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:04:20,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:04:20,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (1/1) ... [2018-11-07 01:04:20,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:04:20,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:04:20,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:04:20,355 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:04:20,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (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 01:04:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:04:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:04:20,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:04:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:04:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:04:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:04:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:04:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:04:20,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:04:23,619 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:04:23,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:23 BoogieIcfgContainer [2018-11-07 01:04:23,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:04:23,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:04:23,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:04:23,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:04:23,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:04:19" (1/3) ... [2018-11-07 01:04:23,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da00395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:23, skipping insertion in model container [2018-11-07 01:04:23,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:20" (2/3) ... [2018-11-07 01:04:23,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da00395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:23, skipping insertion in model container [2018-11-07 01:04:23,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:23" (3/3) ... [2018-11-07 01:04:23,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label41_true-unreach-call_false-termination.c [2018-11-07 01:04:23,646 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:04:23,659 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:04:23,678 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:04:23,730 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:04:23,730 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:04:23,730 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:04:23,730 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:04:23,730 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:04:23,731 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:04:23,731 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:04:23,731 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:04:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-11-07 01:04:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-07 01:04:23,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:23,775 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:23,777 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:23,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:23,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1784134456, now seen corresponding path program 1 times [2018-11-07 01:04:23,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:23,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:23,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:23,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:23,833 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:24,498 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 01:04:24,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:24,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:04:24,502 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:24,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:04:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:04:24,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:24,531 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-11-07 01:04:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:26,214 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-11-07 01:04:26,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:04:26,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2018-11-07 01:04:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:26,239 INFO L225 Difference]: With dead ends: 550 [2018-11-07 01:04:26,239 INFO L226 Difference]: Without dead ends: 340 [2018-11-07 01:04:26,247 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:26,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-07 01:04:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-11-07 01:04:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-07 01:04:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-11-07 01:04:26,331 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 92 [2018-11-07 01:04:26,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:26,332 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-11-07 01:04:26,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:04:26,333 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-11-07 01:04:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 01:04:26,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:26,339 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] [2018-11-07 01:04:26,339 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:26,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:26,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1017763991, now seen corresponding path program 1 times [2018-11-07 01:04:26,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:26,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:26,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:26,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:26,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:26,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:26,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:04:26,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:26,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:04:26,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:04:26,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:04:26,511 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-11-07 01:04:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:28,468 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-11-07 01:04:28,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:04:28,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-11-07 01:04:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:28,476 INFO L225 Difference]: With dead ends: 888 [2018-11-07 01:04:28,476 INFO L226 Difference]: Without dead ends: 554 [2018-11-07 01:04:28,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:04:28,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-11-07 01:04:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-11-07 01:04:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-11-07 01:04:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-11-07 01:04:28,533 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 103 [2018-11-07 01:04:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:28,534 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-11-07 01:04:28,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:04:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-11-07 01:04:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 01:04:28,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:28,539 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-11-07 01:04:28,539 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:28,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:28,540 INFO L82 PathProgramCache]: Analyzing trace with hash 869358827, now seen corresponding path program 1 times [2018-11-07 01:04:28,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:28,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:28,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:28,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:28,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:28,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:28,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:04:28,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:28,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:04:28,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:04:28,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:28,780 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 3 states. [2018-11-07 01:04:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:30,346 INFO L93 Difference]: Finished difference Result 1530 states and 2432 transitions. [2018-11-07 01:04:30,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:04:30,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2018-11-07 01:04:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:30,357 INFO L225 Difference]: With dead ends: 1530 [2018-11-07 01:04:30,357 INFO L226 Difference]: Without dead ends: 997 [2018-11-07 01:04:30,361 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2018-11-07 01:04:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2018-11-07 01:04:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2018-11-07 01:04:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1488 transitions. [2018-11-07 01:04:30,407 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1488 transitions. Word has length 104 [2018-11-07 01:04:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:30,407 INFO L480 AbstractCegarLoop]: Abstraction has 997 states and 1488 transitions. [2018-11-07 01:04:30,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:04:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1488 transitions. [2018-11-07 01:04:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 01:04:30,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:30,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:30,419 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:30,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash -58190001, now seen corresponding path program 1 times [2018-11-07 01:04:30,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:30,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:30,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:30,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:30,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:30,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:30,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:04:30,629 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:30,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:04:30,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:04:30,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:04:30,631 INFO L87 Difference]: Start difference. First operand 997 states and 1488 transitions. Second operand 6 states. [2018-11-07 01:04:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:33,399 INFO L93 Difference]: Finished difference Result 2927 states and 4616 transitions. [2018-11-07 01:04:33,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:04:33,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-11-07 01:04:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:33,426 INFO L225 Difference]: With dead ends: 2927 [2018-11-07 01:04:33,426 INFO L226 Difference]: Without dead ends: 1936 [2018-11-07 01:04:33,434 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:04:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2018-11-07 01:04:33,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1881. [2018-11-07 01:04:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2018-11-07 01:04:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2656 transitions. [2018-11-07 01:04:33,526 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2656 transitions. Word has length 118 [2018-11-07 01:04:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:33,527 INFO L480 AbstractCegarLoop]: Abstraction has 1881 states and 2656 transitions. [2018-11-07 01:04:33,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:04:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2656 transitions. [2018-11-07 01:04:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 01:04:33,533 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:33,534 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:33,534 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:33,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:33,536 INFO L82 PathProgramCache]: Analyzing trace with hash -2017463946, now seen corresponding path program 1 times [2018-11-07 01:04:33,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:33,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:33,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:33,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:33,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:33,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:04:33,699 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:04:33,700 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-11-07 01:04:33,702 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 01:04:33,807 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:04:33,807 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:05:11,795 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:05:11,797 INFO L272 AbstractInterpreter]: Visited 96 different actions 161 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-11-07 01:05:11,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:05:11,811 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:05:22,329 INFO L227 lantSequenceWeakener]: Weakened 32 states. On average, predicates are now at 81% of their original sizes. [2018-11-07 01:05:22,329 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:06:24,751 INFO L415 sIntCurrentIteration]: We unified 135 AI predicates to 135 [2018-11-07 01:06:24,751 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:06:24,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:06:24,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 01:06:24,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:06:24,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 01:06:24,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 01:06:24,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-11-07 01:06:24,754 INFO L87 Difference]: Start difference. First operand 1881 states and 2656 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 01:08:37,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 01:08:37,888 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:08:37,894 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:08:37,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:08:37 BoogieIcfgContainer [2018-11-07 01:08:37,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:08:37,896 INFO L168 Benchmark]: Toolchain (without parser) took 258601.89 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -382.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 01:08:37,898 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 01:08:37,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:08:37,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.65 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 01:08:37,900 INFO L168 Benchmark]: Boogie Preprocessor took 219.35 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:08:37,901 INFO L168 Benchmark]: RCFGBuilder took 3265.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 120.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. [2018-11-07 01:08:37,902 INFO L168 Benchmark]: TraceAbstraction took 254274.24 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 249.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 01:08:37,907 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 789.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.65 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. * Boogie Preprocessor took 219.35 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3265.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 120.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254274.24 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 249.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 431]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 431). Cancelled while BasicCegarLoop was constructing difference of abstraction (1881states) and FLOYD_HOARE automaton (currently 24 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (529 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 254.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 141.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 453 SDtfs, 2060 SDslu, 306 SDs, 0 SdLazy, 3038 SolverSat, 697 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 78.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1881occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 38.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934443153955349 AbsIntWeakeningRatio, 0.25925925925925924 AbsIntAvgWeakeningVarsNumRemoved, 180.47407407407408 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 70 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 553 NumberOfCodeBlocks, 553 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 548 ConstructedInterpolants, 0 QuantifiedInterpolants, 147277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 88/90 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown