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_label46_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:28:09,230 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:28:09,233 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:28:09,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:28:09,251 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:28:09,253 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:28:09,254 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:28:09,257 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:28:09,260 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:28:09,261 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:28:09,264 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:28:09,266 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:28:09,267 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:28:09,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:28:09,271 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:28:09,273 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:28:09,274 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:28:09,278 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:28:09,289 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:28:09,294 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:28:09,298 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:28:09,300 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:28:09,303 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:28:09,319 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 [2018-10-23 23:28:09,347 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:28:09,348 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:28:09,349 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:28:09,350 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:28:09,350 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:28:09,350 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:28:09,350 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:28:09,350 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:28:09,351 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:28:09,351 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:28:09,351 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:28:09,351 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:28:09,353 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:28:09,353 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:28:09,353 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:28:09,353 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:28:09,354 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:28:09,354 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:28:09,354 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:28:09,354 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:28:09,354 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:28:09,355 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:28:09,356 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:28:09,357 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:28:09,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:28:09,357 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:28:09,357 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:28:09,358 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:28:09,358 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:28:09,358 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:28:09,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:28:09,358 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:28:09,359 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:28:09,359 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:28:09,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:28:09,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:28:09,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:28:09,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:28:09,438 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:28:09,439 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46_true-unreach-call_false-termination.c [2018-10-23 23:28:09,514 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/125173299/0d2d9d4b938945d087d71981ec1d527b/FLAGda6df7a47 [2018-10-23 23:28:10,128 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:28:10,129 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label46_true-unreach-call_false-termination.c [2018-10-23 23:28:10,146 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/125173299/0d2d9d4b938945d087d71981ec1d527b/FLAGda6df7a47 [2018-10-23 23:28:10,185 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/125173299/0d2d9d4b938945d087d71981ec1d527b [2018-10-23 23:28:10,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:28:10,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:28:10,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:28:10,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:28:10,213 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:28:10,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:28:10" (1/1) ... [2018-10-23 23:28:10,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4145bbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:10, skipping insertion in model container [2018-10-23 23:28:10,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:28:10" (1/1) ... [2018-10-23 23:28:10,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:28:10,315 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:28:10,858 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:28:10,864 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:28:11,008 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:28:11,037 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:28:11,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11 WrapperNode [2018-10-23 23:28:11,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:28:11,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:28:11,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:28:11,039 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:28:11,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:28:11,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:28:11,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:28:11,234 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:28:11,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (1/1) ... [2018-10-23 23:28:11,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:28:11,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:28:11,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:28:11,343 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:28:11,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (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 [2018-10-23 23:28:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:28:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:28:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:28:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:28:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:28:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:28:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:28:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:28:14,987 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:28:14,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:28:14 BoogieIcfgContainer [2018-10-23 23:28:14,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:28:14,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:28:14,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:28:14,999 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:28:14,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:28:10" (1/3) ... [2018-10-23 23:28:15,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e26baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:28:15, skipping insertion in model container [2018-10-23 23:28:15,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:11" (2/3) ... [2018-10-23 23:28:15,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e26baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:28:15, skipping insertion in model container [2018-10-23 23:28:15,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:28:14" (3/3) ... [2018-10-23 23:28:15,006 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label46_true-unreach-call_false-termination.c [2018-10-23 23:28:15,019 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:28:15,032 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:28:15,051 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:28:15,108 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:28:15,108 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:28:15,109 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:28:15,109 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:28:15,109 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:28:15,109 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:28:15,109 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:28:15,109 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:28:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:28:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 23:28:15,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:15,169 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] [2018-10-23 23:28:15,172 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:15,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:15,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2115690369, now seen corresponding path program 1 times [2018-10-23 23:28:15,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:15,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:15,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:15,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:15,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:15,838 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:28:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:15,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:15,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:28:15,909 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:15,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:28:15,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:28:15,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:28:15,942 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:28:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:17,523 INFO L93 Difference]: Finished difference Result 623 states and 1063 transitions. [2018-10-23 23:28:17,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:28:17,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2018-10-23 23:28:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:17,544 INFO L225 Difference]: With dead ends: 623 [2018-10-23 23:28:17,544 INFO L226 Difference]: Without dead ends: 384 [2018-10-23 23:28:17,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:28:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-23 23:28:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2018-10-23 23:28:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:28:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 642 transitions. [2018-10-23 23:28:17,653 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 642 transitions. Word has length 119 [2018-10-23 23:28:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:17,656 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 642 transitions. [2018-10-23 23:28:17,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:28:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 642 transitions. [2018-10-23 23:28:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-23 23:28:17,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:17,664 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-10-23 23:28:17,664 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:17,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:17,665 INFO L82 PathProgramCache]: Analyzing trace with hash -108977794, now seen corresponding path program 1 times [2018-10-23 23:28:17,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:17,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:17,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:17,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:17,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:17,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:17,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:28:17,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:17,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:28:17,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:28:17,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:28:17,927 INFO L87 Difference]: Start difference. First operand 382 states and 642 transitions. Second operand 3 states. [2018-10-23 23:28:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:18,931 INFO L93 Difference]: Finished difference Result 1051 states and 1838 transitions. [2018-10-23 23:28:18,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:28:18,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-10-23 23:28:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:18,942 INFO L225 Difference]: With dead ends: 1051 [2018-10-23 23:28:18,943 INFO L226 Difference]: Without dead ends: 675 [2018-10-23 23:28:18,951 INFO L605 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 [2018-10-23 23:28:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-10-23 23:28:18,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2018-10-23 23:28:18,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-10-23 23:28:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1091 transitions. [2018-10-23 23:28:19,004 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1091 transitions. Word has length 129 [2018-10-23 23:28:19,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:19,005 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1091 transitions. [2018-10-23 23:28:19,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:28:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1091 transitions. [2018-10-23 23:28:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-23 23:28:19,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:19,012 INFO L375 BasicCegarLoop]: trace histogram [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, 1] [2018-10-23 23:28:19,012 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:19,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:19,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1611295221, now seen corresponding path program 1 times [2018-10-23 23:28:19,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:19,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:19,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:19,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:19,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:19,289 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:28:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:19,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:19,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:28:19,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:19,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:28:19,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:28:19,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:28:19,426 INFO L87 Difference]: Start difference. First operand 675 states and 1091 transitions. Second operand 6 states. [2018-10-23 23:28:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:23,211 INFO L93 Difference]: Finished difference Result 2200 states and 3725 transitions. [2018-10-23 23:28:23,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:28:23,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-23 23:28:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:23,230 INFO L225 Difference]: With dead ends: 2200 [2018-10-23 23:28:23,230 INFO L226 Difference]: Without dead ends: 1531 [2018-10-23 23:28:23,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:28:23,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2018-10-23 23:28:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1501. [2018-10-23 23:28:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2018-10-23 23:28:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2317 transitions. [2018-10-23 23:28:23,315 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2317 transitions. Word has length 142 [2018-10-23 23:28:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:23,316 INFO L481 AbstractCegarLoop]: Abstraction has 1501 states and 2317 transitions. [2018-10-23 23:28:23,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:28:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2317 transitions. [2018-10-23 23:28:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-23 23:28:23,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:23,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:28:23,323 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:23,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2004636025, now seen corresponding path program 1 times [2018-10-23 23:28:23,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:23,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:23,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:23,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:23,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:23,803 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 23:28:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:24,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:24,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:28:24,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:24,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:28:24,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:28:24,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:24,028 INFO L87 Difference]: Start difference. First operand 1501 states and 2317 transitions. Second operand 5 states. [2018-10-23 23:28:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:25,790 INFO L93 Difference]: Finished difference Result 2935 states and 4510 transitions. [2018-10-23 23:28:25,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:28:25,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-10-23 23:28:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:25,801 INFO L225 Difference]: With dead ends: 2935 [2018-10-23 23:28:25,802 INFO L226 Difference]: Without dead ends: 1292 [2018-10-23 23:28:25,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2018-10-23 23:28:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2018-10-23 23:28:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2018-10-23 23:28:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1901 transitions. [2018-10-23 23:28:25,863 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1901 transitions. Word has length 144 [2018-10-23 23:28:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:25,863 INFO L481 AbstractCegarLoop]: Abstraction has 1292 states and 1901 transitions. [2018-10-23 23:28:25,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:28:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1901 transitions. [2018-10-23 23:28:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-23 23:28:25,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:25,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:28:25,872 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:25,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash 475684418, now seen corresponding path program 1 times [2018-10-23 23:28:25,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:25,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:25,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:25,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:25,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:26,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:28:26,118 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:28:26,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-10-23 23:28:26,122 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [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], [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], [623], [625], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:28:26,210 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:28:26,210 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:28:36,413 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:28:36,415 INFO L272 AbstractInterpreter]: Visited 120 different actions 120 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:28:36,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:36,426 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:28:40,049 INFO L232 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 81.38% of their original sizes. [2018-10-23 23:28:40,050 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:28:44,255 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:28:44,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:28:44,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-23 23:28:44,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:44,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:28:44,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:28:44,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:28:44,258 INFO L87 Difference]: Start difference. First operand 1292 states and 1901 transitions. Second operand 13 states. [2018-10-23 23:30:06,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:06,893 INFO L93 Difference]: Finished difference Result 2878 states and 4216 transitions. [2018-10-23 23:30:06,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:30:06,893 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 151 [2018-10-23 23:30:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:06,901 INFO L225 Difference]: With dead ends: 2878 [2018-10-23 23:30:06,901 INFO L226 Difference]: Without dead ends: 1592 [2018-10-23 23:30:06,905 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 161 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:30:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-10-23 23:30:07,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1439. [2018-10-23 23:30:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1439 states. [2018-10-23 23:30:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2058 transitions. [2018-10-23 23:30:07,012 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2058 transitions. Word has length 151 [2018-10-23 23:30:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:07,012 INFO L481 AbstractCegarLoop]: Abstraction has 1439 states and 2058 transitions. [2018-10-23 23:30:07,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:30:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2058 transitions. [2018-10-23 23:30:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-23 23:30:07,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:07,018 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:30:07,019 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:07,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:07,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1654186226, now seen corresponding path program 1 times [2018-10-23 23:30:07,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:07,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:07,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:07,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:07,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:07,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:30:07,262 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:30:07,262 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 157 with the following transitions: [2018-10-23 23:30:07,262 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [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], [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], [623], [625], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:30:07,269 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:30:07,269 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:31:09,730 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:31:09,730 INFO L272 AbstractInterpreter]: Visited 123 different actions 480 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 23:31:09,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:31:09,741 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:31:14,725 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 91.67% of their original sizes. [2018-10-23 23:31:14,725 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:32:21,744 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:32:21,749 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:32:21,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:32:21 BoogieIcfgContainer [2018-10-23 23:32:21,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:32:21,750 INFO L168 Benchmark]: Toolchain (without parser) took 251547.09 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 23:32:21,751 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 23:32:21,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 832.77 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. [2018-10-23 23:32:21,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 193.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:21,754 INFO L168 Benchmark]: Boogie Preprocessor took 106.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:21,755 INFO L168 Benchmark]: RCFGBuilder took 3645.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:21,756 INFO L168 Benchmark]: TraceAbstraction took 246759.94 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 23:32:21,761 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 832.77 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 193.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3645.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246759.94 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 508]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 508). Cancelled while BasicCegarLoop was analyzing trace of length 157 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 246.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 90.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 770 SDtfs, 2823 SDslu, 653 SDs, 0 SdLazy, 3272 SolverSat, 728 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 188 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1501occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 72.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9942774526035955 AbsIntWeakeningRatio, 0.21639344262295082 AbsIntAvgWeakeningVarsNumRemoved, 1696.2688524590164 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 185 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 680 ConstructedInterpolants, 0 QuantifiedInterpolants, 427628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 82/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown