java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:20:43,364 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:20:43,366 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:20:43,383 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:20:43,383 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:20:43,384 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:20:43,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:20:43,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:20:43,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:20:43,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:20:43,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:20:43,391 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:20:43,392 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:20:43,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:20:43,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:20:43,395 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:20:43,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:20:43,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:20:43,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:20:43,401 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:20:43,402 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:20:43,404 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:20:43,406 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:20:43,407 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:20:43,407 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:20:43,408 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:20:43,409 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:20:43,410 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:20:43,411 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:20:43,412 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:20:43,412 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:20:43,413 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:20:43,413 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:20:43,413 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:20:43,414 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:20:43,415 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:20:43,415 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:20:43,433 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:20:43,433 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:20:43,434 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:20:43,434 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:20:43,434 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:20:43,435 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:20:43,435 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:20:43,435 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:20:43,435 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:20:43,435 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:20:43,436 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:20:43,436 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:20:43,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:20:43,437 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:20:43,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:20:43,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:20:43,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:20:43,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:20:43,438 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:20:43,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:20:43,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:20:43,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:20:43,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:20:43,439 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:20:43,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:20:43,439 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:20:43,439 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:20:43,439 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:20:43,440 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:20:43,440 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:20:43,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:20:43,440 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:20:43,440 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:20:43,440 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:20:43,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:20:43,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:20:43,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:20:43,526 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:20:43,526 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:20:43,527 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label00_true-unreach-call_false-termination.c [2018-10-24 19:20:43,606 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d3818b5b/16fdce846e704c5e9b356f06dcb4444a/FLAG6c3d89bcf [2018-10-24 19:20:44,147 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:20:44,148 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label00_true-unreach-call_false-termination.c [2018-10-24 19:20:44,161 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d3818b5b/16fdce846e704c5e9b356f06dcb4444a/FLAG6c3d89bcf [2018-10-24 19:20:44,192 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d3818b5b/16fdce846e704c5e9b356f06dcb4444a [2018-10-24 19:20:44,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:20:44,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:20:44,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:20:44,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:20:44,217 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:20:44,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:20:44" (1/1) ... [2018-10-24 19:20:44,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe9cb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:44, skipping insertion in model container [2018-10-24 19:20:44,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:20:44" (1/1) ... [2018-10-24 19:20:44,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:20:44,321 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:20:44,891 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:20:44,895 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:20:45,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:20:45,038 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:20:45,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45 WrapperNode [2018-10-24 19:20:45,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:20:45,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:20:45,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:20:45,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:20:45,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:20:45,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:20:45,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:20:45,238 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:20:45,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... [2018-10-24 19:20:45,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:20:45,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:20:45,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:20:45,331 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:20:45,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:20:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:20:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:20:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:20:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:20:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:20:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:20:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:20:45,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:20:48,838 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:20:48,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:20:48 BoogieIcfgContainer [2018-10-24 19:20:48,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:20:48,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:20:48,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:20:48,847 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:20:48,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:20:44" (1/3) ... [2018-10-24 19:20:48,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d7dae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:20:48, skipping insertion in model container [2018-10-24 19:20:48,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:45" (2/3) ... [2018-10-24 19:20:48,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d7dae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:20:48, skipping insertion in model container [2018-10-24 19:20:48,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:20:48" (3/3) ... [2018-10-24 19:20:48,853 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label00_true-unreach-call_false-termination.c [2018-10-24 19:20:48,864 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:20:48,879 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:20:48,899 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:20:48,957 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:20:48,958 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:20:48,958 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:20:48,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:20:48,958 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:20:48,959 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:20:48,959 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:20:48,959 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:20:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:20:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 19:20:49,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:20:49,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:20:49,018 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:20:49,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:20:49,025 INFO L82 PathProgramCache]: Analyzing trace with hash 117916544, now seen corresponding path program 1 times [2018-10-24 19:20:49,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:20:49,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:49,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:20:49,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:49,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:20:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:20:49,708 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:20:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:20:49,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:20:49,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:20:49,782 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:20:49,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:20:49,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:20:49,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:20:49,810 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:20:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:20:51,441 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 19:20:51,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:20:51,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2018-10-24 19:20:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:20:51,463 INFO L225 Difference]: With dead ends: 618 [2018-10-24 19:20:51,464 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 19:20:51,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:20:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 19:20:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 19:20:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 19:20:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 19:20:51,610 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 122 [2018-10-24 19:20:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:20:51,611 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 19:20:51,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:20:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 19:20:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 19:20:51,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:20:51,626 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:20:51,627 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:20:51,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:20:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash -735277163, now seen corresponding path program 1 times [2018-10-24 19:20:51,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:20:51,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:51,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:20:51,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:51,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:20:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:20:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:20:51,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:20:51,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:20:51,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:20:51,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:20:51,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:20:51,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:20:51,877 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 19:20:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:20:54,153 INFO L93 Difference]: Finished difference Result 1229 states and 2094 transitions. [2018-10-24 19:20:54,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:20:54,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-24 19:20:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:20:54,169 INFO L225 Difference]: With dead ends: 1229 [2018-10-24 19:20:54,170 INFO L226 Difference]: Without dead ends: 856 [2018-10-24 19:20:54,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:20:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2018-10-24 19:20:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 823. [2018-10-24 19:20:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-10-24 19:20:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1292 transitions. [2018-10-24 19:20:54,255 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1292 transitions. Word has length 138 [2018-10-24 19:20:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:20:54,256 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1292 transitions. [2018-10-24 19:20:54,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:20:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1292 transitions. [2018-10-24 19:20:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 19:20:54,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:20:54,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:20:54,262 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:20:54,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:20:54,263 INFO L82 PathProgramCache]: Analyzing trace with hash 336904770, now seen corresponding path program 1 times [2018-10-24 19:20:54,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:20:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:54,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:20:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:54,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:20:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:20:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:20:54,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:20:54,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:20:54,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:20:54,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:20:54,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:20:54,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:20:54,644 INFO L87 Difference]: Start difference. First operand 823 states and 1292 transitions. Second operand 5 states. [2018-10-24 19:20:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:20:58,043 INFO L93 Difference]: Finished difference Result 1778 states and 2834 transitions. [2018-10-24 19:20:58,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:20:58,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-10-24 19:20:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:20:58,054 INFO L225 Difference]: With dead ends: 1778 [2018-10-24 19:20:58,055 INFO L226 Difference]: Without dead ends: 813 [2018-10-24 19:20:58,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:20:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2018-10-24 19:20:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2018-10-24 19:20:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2018-10-24 19:20:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1260 transitions. [2018-10-24 19:20:58,105 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1260 transitions. Word has length 149 [2018-10-24 19:20:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:20:58,106 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1260 transitions. [2018-10-24 19:20:58,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:20:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1260 transitions. [2018-10-24 19:20:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 19:20:58,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:20:58,112 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:20:58,115 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:20:58,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:20:58,115 INFO L82 PathProgramCache]: Analyzing trace with hash 981001735, now seen corresponding path program 1 times [2018-10-24 19:20:58,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:20:58,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:58,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:20:58,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:20:58,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:20:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:20:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 19:20:58,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:20:58,430 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:20:58,431 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-24 19:20:58,433 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [225], [228], [232], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [647], [649], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:20:58,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:20:58,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:21:11,834 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:21:11,836 INFO L272 AbstractInterpreter]: Visited 123 different actions 123 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:21:11,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:11,846 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:21:17,325 INFO L232 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 81.24% of their original sizes. [2018-10-24 19:21:17,325 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:21:20,792 INFO L413 sIntCurrentIteration]: We have 189 unified AI predicates [2018-10-24 19:21:20,792 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:21:20,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:21:20,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:21:20,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:20,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:21:20,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:21:20,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:21:20,796 INFO L87 Difference]: Start difference. First operand 813 states and 1260 transitions. Second operand 14 states. [2018-10-24 19:23:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:23:53,139 INFO L93 Difference]: Finished difference Result 1920 states and 2965 transitions. [2018-10-24 19:23:53,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:23:53,139 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 190 [2018-10-24 19:23:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:23:53,146 INFO L225 Difference]: With dead ends: 1920 [2018-10-24 19:23:53,146 INFO L226 Difference]: Without dead ends: 1113 [2018-10-24 19:23:53,149 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 202 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:23:53,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2018-10-24 19:23:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 960. [2018-10-24 19:23:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2018-10-24 19:23:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1414 transitions. [2018-10-24 19:23:53,254 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1414 transitions. Word has length 190 [2018-10-24 19:23:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:23:53,254 INFO L481 AbstractCegarLoop]: Abstraction has 960 states and 1414 transitions. [2018-10-24 19:23:53,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:23:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1414 transitions. [2018-10-24 19:23:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 19:23:53,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:23:53,260 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:23:53,260 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:23:53,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:53,261 INFO L82 PathProgramCache]: Analyzing trace with hash -473493464, now seen corresponding path program 1 times [2018-10-24 19:23:53,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:23:53,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:53,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:23:53,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:53,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:23:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:23:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 73 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:23:53,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:23:53,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:23:53,658 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-10-24 19:23:53,660 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [225], [228], [232], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [647], [649], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:23:53,675 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:23:53,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:24:57,486 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:24:57,486 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:24:57,487 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:24:57,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:24:57,488 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:24:57,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:24:57,497 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:24:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:24:57,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:24:57,626 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:24:57,828 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:24:57,828 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:24:57,833 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:24:57,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:24:57 BoogieIcfgContainer [2018-10-24 19:24:57,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:24:57,834 INFO L168 Benchmark]: Toolchain (without parser) took 253628.03 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 19:24:57,836 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:24:57,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 829.80 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:24:57,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 198.25 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:24:57,838 INFO L168 Benchmark]: Boogie Preprocessor took 92.72 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:24:57,838 INFO L168 Benchmark]: RCFGBuilder took 3508.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:24:57,839 INFO L168 Benchmark]: TraceAbstraction took 248992.80 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -773.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 19:24:57,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 829.80 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 198.25 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.72 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3508.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248992.80 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -773.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 517]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 517). Cancelled while BasicCegarLoop was analyzing trace of length 201 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 248.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 159.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 619 SDtfs, 2649 SDslu, 867 SDs, 0 SdLazy, 3297 SolverSat, 616 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 225 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 77.2s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9958078379131013 AbsIntWeakeningRatio, 0.19576719576719576 AbsIntAvgWeakeningVarsNumRemoved, 942.7936507936508 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 599 NumberOfCodeBlocks, 599 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 595 ConstructedInterpolants, 0 QuantifiedInterpolants, 457754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 104/106 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown