java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:38:23,246 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:38:23,248 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:38:23,262 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:38:23,262 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:38:23,263 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:38:23,264 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:38:23,268 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:38:23,270 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:38:23,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:38:23,273 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:38:23,274 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:38:23,275 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:38:23,276 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:38:23,278 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:38:23,278 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:38:23,279 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:38:23,281 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:38:23,283 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:38:23,285 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:38:23,286 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:38:23,287 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:38:23,290 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 08:38:23,296 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:38:23,297 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:38:23,298 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:38:23,298 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:38:23,299 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:38:23,316 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:38:23,319 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:38:23,320 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:38:23,320 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:38:23,320 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:38:23,320 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:38:23,321 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:38:23,321 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:38:23,321 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:38:23,321 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:38:23,321 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:38:23,321 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:38:23,325 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:38:23,325 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:38:23,326 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:38:23,326 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:38:23,327 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:38:23,327 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:38:23,327 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:38:23,327 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:38:23,327 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:38:23,328 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:38:23,328 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:38:23,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:38:23,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:38:23,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:38:23,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:38:23,331 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:38:23,331 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:38:23,331 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:38:23,331 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:38:23,331 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:38:23,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:38:23,332 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:38:23,332 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:38:23,333 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:38:23,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:38:23,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:38:23,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:38:23,400 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:38:23,400 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:38:23,401 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-11-07 08:38:23,470 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f959a265a/cb40a50680ec435e9ba436881792969e/FLAG75e07b32c [2018-11-07 08:38:24,258 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:38:24,259 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-11-07 08:38:24,298 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f959a265a/cb40a50680ec435e9ba436881792969e/FLAG75e07b32c [2018-11-07 08:38:24,318 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f959a265a/cb40a50680ec435e9ba436881792969e [2018-11-07 08:38:24,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:38:24,332 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:38:24,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:38:24,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:38:24,337 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:38:24,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:38:24" (1/1) ... [2018-11-07 08:38:24,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:24, skipping insertion in model container [2018-11-07 08:38:24,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:38:24" (1/1) ... [2018-11-07 08:38:24,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:38:24,517 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:38:25,859 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:38:25,864 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:38:26,462 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:38:26,493 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:38:26,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26 WrapperNode [2018-11-07 08:38:26,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:38:26,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:38:26,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:38:26,496 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:38:26,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:26,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:26,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:38:26,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:38:26,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:38:26,849 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:38:26,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:26,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:26,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:26,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:27,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:27,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:27,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... [2018-11-07 08:38:27,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:38:27,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:38:27,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:38:27,157 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:38:27,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:38:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:38:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:38:27,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:38:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:38:27,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:38:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:38:27,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:38:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:38:27,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:38:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:38:27,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:38:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:38:27,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:38:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:38:27,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:38:37,014 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:38:37,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:38:37 BoogieIcfgContainer [2018-11-07 08:38:37,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:38:37,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:38:37,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:38:37,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:38:37,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:38:24" (1/3) ... [2018-11-07 08:38:37,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcdfc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:38:37, skipping insertion in model container [2018-11-07 08:38:37,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:38:26" (2/3) ... [2018-11-07 08:38:37,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcdfc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:38:37, skipping insertion in model container [2018-11-07 08:38:37,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:38:37" (3/3) ... [2018-11-07 08:38:37,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-11-07 08:38:37,035 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:38:37,047 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:38:37,066 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:38:37,114 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:38:37,114 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:38:37,114 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:38:37,114 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:38:37,114 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:38:37,115 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:38:37,115 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:38:37,115 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:38:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 08:38:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-07 08:38:37,169 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:37,170 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] [2018-11-07 08:38:37,173 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:37,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:37,180 INFO L82 PathProgramCache]: Analyzing trace with hash -832809957, now seen corresponding path program 1 times [2018-11-07 08:38:37,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:37,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:37,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:37,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:37,340 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:37,832 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:38:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:37,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:38:37,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:38:37,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:38:37,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:38:38,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:38:38,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:38:38,004 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 08:38:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:38:46,360 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 08:38:46,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:38:46,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-11-07 08:38:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:38:46,412 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 08:38:46,412 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 08:38:46,427 INFO L604 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 [2018-11-07 08:38:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 08:38:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 08:38:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 08:38:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 08:38:46,593 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 47 [2018-11-07 08:38:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:38:46,594 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 08:38:46,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:38:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 08:38:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 08:38:46,605 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:46,605 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:38:46,605 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:46,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:46,608 INFO L82 PathProgramCache]: Analyzing trace with hash -342093644, now seen corresponding path program 1 times [2018-11-07 08:38:46,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:46,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:46,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:46,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:46,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:47,033 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:38:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:47,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:38:47,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:38:47,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:38:47,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:38:47,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:38:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:38:47,076 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 08:38:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:38:56,579 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 08:38:56,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:38:56,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-11-07 08:38:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:38:56,602 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 08:38:56,603 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 08:38:56,609 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:38:56,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 08:38:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 08:38:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 08:38:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 08:38:56,718 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 121 [2018-11-07 08:38:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:38:56,718 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 08:38:56,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:38:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 08:38:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 08:38:56,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:56,723 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:38:56,723 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:56,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:56,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1410131373, now seen corresponding path program 1 times [2018-11-07 08:38:56,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:56,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:56,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:56,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:56,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:56,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:38:56,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:38:56,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:38:56,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:38:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:38:56,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:38:56,982 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 08:39:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:39:07,717 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 08:39:07,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:39:07,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-07 08:39:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:39:07,777 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 08:39:07,777 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 08:39:07,794 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:39:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 08:39:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 08:39:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 08:39:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 08:39:08,049 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 126 [2018-11-07 08:39:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:39:08,050 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 08:39:08,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:39:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 08:39:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 08:39:08,053 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:39:08,053 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:39:08,054 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:39:08,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:39:08,054 INFO L82 PathProgramCache]: Analyzing trace with hash 750688061, now seen corresponding path program 1 times [2018-11-07 08:39:08,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:39:08,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:08,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:39:08,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:08,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:39:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:39:08,304 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:39:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:39:08,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:39:08,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:39:08,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:39:08,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:39:08,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:39:08,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:39:08,599 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 08:39:17,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:39:17,752 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 08:39:17,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:39:17,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 08:39:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:39:17,844 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 08:39:17,845 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 08:39:17,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:39:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 08:39:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 08:39:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 08:39:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 08:39:18,255 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 134 [2018-11-07 08:39:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:39:18,256 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 08:39:18,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:39:18,256 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 08:39:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-07 08:39:18,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:39:18,263 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:39:18,264 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:39:18,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:39:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1560155152, now seen corresponding path program 1 times [2018-11-07 08:39:18,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:39:18,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:18,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:39:18,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:18,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:39:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:39:18,586 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:39:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:39:18,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:39:18,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:39:18,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:39:18,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:39:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:39:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:39:18,974 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 08:39:28,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:39:28,110 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-11-07 08:39:28,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:39:28,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-11-07 08:39:28,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:39:28,203 INFO L225 Difference]: With dead ends: 35956 [2018-11-07 08:39:28,204 INFO L226 Difference]: Without dead ends: 21743 [2018-11-07 08:39:28,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:39:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-11-07 08:39:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-11-07 08:39:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-11-07 08:39:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-11-07 08:39:28,711 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 167 [2018-11-07 08:39:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:39:28,712 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-11-07 08:39:28,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:39:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-11-07 08:39:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 08:39:28,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:39:28,725 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 08:39:28,725 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:39:28,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:39:28,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1155888016, now seen corresponding path program 1 times [2018-11-07 08:39:28,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:39:28,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:28,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:39:28,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:28,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:39:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:39:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 08:39:29,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:39:29,400 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:39:29,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 08:39:29,406 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2143], [2145], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 08:39:29,480 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:39:29,481 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:39:30,250 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:39:30,252 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 08:39:30,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:39:30,281 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:39:30,716 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 75.58% of their original sizes. [2018-11-07 08:39:30,717 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:39:31,526 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-07 08:39:31,526 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:39:31,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:39:31,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 08:39:31,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:39:31,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:39:31,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:39:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:39:31,537 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 08:42:24,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 08:42:24,960 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:42:24,967 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:42:24,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:42:24 BoogieIcfgContainer [2018-11-07 08:42:24,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:42:24,969 INFO L168 Benchmark]: Toolchain (without parser) took 240638.17 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 1.9 GB in the end (delta: -532.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 08:42:24,970 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 08:42:24,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2162.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-11-07 08:42:24,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 352.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-11-07 08:42:24,973 INFO L168 Benchmark]: Boogie Preprocessor took 307.96 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-11-07 08:42:24,974 INFO L168 Benchmark]: RCFGBuilder took 9858.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 661.3 MB). Peak memory consumption was 661.3 MB. Max. memory is 7.1 GB. [2018-11-07 08:42:24,975 INFO L168 Benchmark]: TraceAbstraction took 227951.65 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -366.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 08:42:24,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2162.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 352.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.96 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9858.60 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 661.3 MB). Peak memory consumption was 661.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227951.65 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -366.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (21651states) and FLOYD_HOARE automaton (currently 12 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (20114 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 227.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 220.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1151 SDtfs, 17991 SDslu, 985 SDs, 0 SdLazy, 30095 SolverSat, 6936 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 188.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 269 GetRequests, 219 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21651occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9969160246018596 AbsIntWeakeningRatio, 0.12442396313364056 AbsIntAvgWeakeningVarsNumRemoved, 17.092165898617512 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 257 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 813 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 807 ConstructedInterpolants, 0 QuantifiedInterpolants, 578305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 249/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown