java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:35:13,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:35:13,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:35:13,179 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:35:13,179 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:35:13,180 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:35:13,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:35:13,184 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:35:13,187 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:35:13,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:35:13,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:35:13,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:35:13,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:35:13,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:35:13,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:35:13,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:35:13,204 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:35:13,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:35:13,212 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:35:13,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:35:13,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:35:13,221 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:35:13,224 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 01:35:13,224 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 01:35:13,225 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 01:35:13,226 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 01:35:13,227 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 01:35:13,228 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 01:35:13,228 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 01:35:13,233 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 01:35:13,234 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 01:35:13,234 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 01:35:13,234 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:35:13,235 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:35:13,235 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:35:13,236 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:35:13,237 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:35:13,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:35:13,269 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:35:13,270 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:35:13,270 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:35:13,271 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:35:13,271 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:35:13,271 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:35:13,271 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:35:13,272 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:35:13,273 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:35:13,274 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:35:13,274 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:35:13,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:35:13,275 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:35:13,275 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:35:13,275 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:35:13,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:35:13,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:35:13,276 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:35:13,276 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:35:13,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:35:13,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:35:13,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:35:13,277 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:35:13,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:35:13,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:35:13,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:35:13,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:35:13,278 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:35:13,278 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:35:13,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:35:13,279 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:35:13,279 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:35:13,279 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:35:13,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:35:13,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:35:13,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:35:13,349 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:35:13,349 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:35:13,350 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51_true-unreach-call.c [2018-11-07 01:35:13,419 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c25b48c4/85233c8fa54343748ea0e6e848ea9038/FLAG2e9643f7a [2018-11-07 01:35:14,054 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:35:14,055 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label51_true-unreach-call.c [2018-11-07 01:35:14,075 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c25b48c4/85233c8fa54343748ea0e6e848ea9038/FLAG2e9643f7a [2018-11-07 01:35:14,093 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c25b48c4/85233c8fa54343748ea0e6e848ea9038 [2018-11-07 01:35:14,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:35:14,111 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:35:14,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:35:14,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:35:14,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:35:14,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:14" (1/1) ... [2018-11-07 01:35:14,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dfde74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:14, skipping insertion in model container [2018-11-07 01:35:14,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:14" (1/1) ... [2018-11-07 01:35:14,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:35:14,237 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:35:15,054 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:35:15,061 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:35:15,341 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:35:15,366 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:35:15,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15 WrapperNode [2018-11-07 01:35:15,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:35:15,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:35:15,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:35:15,368 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:35:15,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:35:15,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:35:15,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:35:15,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:35:15,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... [2018-11-07 01:35:15,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:35:15,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:35:15,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:35:15,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:35:15,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:35:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:35:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:35:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:35:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:35:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:35:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:35:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:35:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:35:15,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:35:21,836 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:35:21,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:21 BoogieIcfgContainer [2018-11-07 01:35:21,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:35:21,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:35:21,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:35:21,848 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:35:21,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:35:14" (1/3) ... [2018-11-07 01:35:21,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c78447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:21, skipping insertion in model container [2018-11-07 01:35:21,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:15" (2/3) ... [2018-11-07 01:35:21,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c78447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:21, skipping insertion in model container [2018-11-07 01:35:21,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:21" (3/3) ... [2018-11-07 01:35:21,853 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label51_true-unreach-call.c [2018-11-07 01:35:21,864 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:35:21,876 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:35:21,896 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:35:21,957 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:35:21,957 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:35:21,957 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:35:21,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:35:21,958 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:35:21,958 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:35:21,958 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:35:21,958 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:35:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 01:35:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 01:35:22,021 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:35:22,023 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:35:22,026 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:35:22,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:35:22,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1377037548, now seen corresponding path program 1 times [2018-11-07 01:35:22,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:35:22,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:22,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:35:22,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:22,109 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:35:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:35:23,078 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-11-07 01:35:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:35:23,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:35:23,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 01:35:23,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:35:23,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 01:35:23,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 01:35:23,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:35:23,448 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 01:35:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:35:27,218 INFO L93 Difference]: Finished difference Result 1077 states and 1927 transitions. [2018-11-07 01:35:27,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:35:27,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2018-11-07 01:35:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:35:27,251 INFO L225 Difference]: With dead ends: 1077 [2018-11-07 01:35:27,252 INFO L226 Difference]: Without dead ends: 759 [2018-11-07 01:35:27,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:35:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2018-11-07 01:35:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 519. [2018-11-07 01:35:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-11-07 01:35:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 918 transitions. [2018-11-07 01:35:27,382 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 918 transitions. Word has length 195 [2018-11-07 01:35:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:35:27,387 INFO L480 AbstractCegarLoop]: Abstraction has 519 states and 918 transitions. [2018-11-07 01:35:27,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 01:35:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 918 transitions. [2018-11-07 01:35:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-07 01:35:27,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:35:27,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:35:27,409 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:35:27,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:35:27,410 INFO L82 PathProgramCache]: Analyzing trace with hash 233310665, now seen corresponding path program 1 times [2018-11-07 01:35:27,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:35:27,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:27,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:35:27,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:27,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:35:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:35:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:35:27,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:35:27,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:35:27,911 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:35:27,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:35:27,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:35:27,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:35:27,914 INFO L87 Difference]: Start difference. First operand 519 states and 918 transitions. Second operand 6 states. [2018-11-07 01:35:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:35:31,712 INFO L93 Difference]: Finished difference Result 1480 states and 2698 transitions. [2018-11-07 01:35:31,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:35:31,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-11-07 01:35:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:35:31,728 INFO L225 Difference]: With dead ends: 1480 [2018-11-07 01:35:31,729 INFO L226 Difference]: Without dead ends: 967 [2018-11-07 01:35:31,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:35:31,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-11-07 01:35:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 949. [2018-11-07 01:35:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-11-07 01:35:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-11-07 01:35:31,812 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 223 [2018-11-07 01:35:31,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:35:31,812 INFO L480 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-11-07 01:35:31,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:35:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-11-07 01:35:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 01:35:31,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:35:31,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:35:31,819 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:35:31,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:35:31,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1168787131, now seen corresponding path program 1 times [2018-11-07 01:35:31,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:35:31,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:31,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:35:31,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:31,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:35:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:35:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:35:32,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:35:32,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:35:32,131 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:35:32,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:35:32,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:35:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:35:32,133 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 6 states. [2018-11-07 01:35:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:35:35,487 INFO L93 Difference]: Finished difference Result 2923 states and 5085 transitions. [2018-11-07 01:35:35,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 01:35:35,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-11-07 01:35:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:35:35,510 INFO L225 Difference]: With dead ends: 2923 [2018-11-07 01:35:35,511 INFO L226 Difference]: Without dead ends: 1980 [2018-11-07 01:35:35,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:35:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-11-07 01:35:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1937. [2018-11-07 01:35:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-11-07 01:35:35,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3132 transitions. [2018-11-07 01:35:35,648 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3132 transitions. Word has length 230 [2018-11-07 01:35:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:35:35,648 INFO L480 AbstractCegarLoop]: Abstraction has 1937 states and 3132 transitions. [2018-11-07 01:35:35,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:35:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3132 transitions. [2018-11-07 01:35:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 01:35:35,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:35:35,663 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:35:35,664 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:35:35,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:35:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash 735234804, now seen corresponding path program 1 times [2018-11-07 01:35:35,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:35:35,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:35,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:35:35,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:35,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:35:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:35:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:35:36,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:35:36,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:35:36,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:35:36,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:35:36,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:35:36,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:35:36,102 INFO L87 Difference]: Start difference. First operand 1937 states and 3132 transitions. Second operand 3 states. [2018-11-07 01:35:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:35:38,377 INFO L93 Difference]: Finished difference Result 5678 states and 9481 transitions. [2018-11-07 01:35:38,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:35:38,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2018-11-07 01:35:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:35:38,407 INFO L225 Difference]: With dead ends: 5678 [2018-11-07 01:35:38,407 INFO L226 Difference]: Without dead ends: 3747 [2018-11-07 01:35:38,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:35:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-11-07 01:35:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3742. [2018-11-07 01:35:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2018-11-07 01:35:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 5849 transitions. [2018-11-07 01:35:38,552 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 5849 transitions. Word has length 241 [2018-11-07 01:35:38,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:35:38,553 INFO L480 AbstractCegarLoop]: Abstraction has 3742 states and 5849 transitions. [2018-11-07 01:35:38,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:35:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 5849 transitions. [2018-11-07 01:35:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-07 01:35:38,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:35:38,572 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:35:38,572 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:35:38,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:35:38,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1160092379, now seen corresponding path program 1 times [2018-11-07 01:35:38,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:35:38,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:38,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:35:38,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:35:38,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:35:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:35:38,862 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:35:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 45 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 01:35:39,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:35:39,272 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:35:39,274 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-07 01:35:39,283 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1021], [1023], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 01:35:39,411 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:35:39,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 01:39:44,891 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 01:39:44,892 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 01:39:44,893 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 01:39:44,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:39:44,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:39:44,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:39:44,910 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 01:39:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:39:45,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 01:39:45,171 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 01:39:45,372 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:39:45,373 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:39:45,379 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:39:45,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:39:45 BoogieIcfgContainer [2018-11-07 01:39:45,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:39:45,381 INFO L168 Benchmark]: Toolchain (without parser) took 271271.94 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -924.8 MB). Peak memory consumption was 280.1 MB. Max. memory is 7.1 GB. [2018-11-07 01:39:45,382 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:39:45,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1255.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:39:45,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 271.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:39:45,384 INFO L168 Benchmark]: Boogie Preprocessor took 231.94 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:39:45,385 INFO L168 Benchmark]: RCFGBuilder took 5965.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 251.9 MB). Peak memory consumption was 251.9 MB. Max. memory is 7.1 GB. [2018-11-07 01:39:45,386 INFO L168 Benchmark]: TraceAbstraction took 263541.02 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 451.4 MB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -396.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:39:45,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1255.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 271.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.94 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5965.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 251.9 MB). Peak memory consumption was 251.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263541.02 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 451.4 MB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -396.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1599]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1599). Cancelled while BasicCegarLoop was analyzing trace of length 249 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 263.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 13.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 885 SDtfs, 2740 SDslu, 508 SDs, 0 SdLazy, 4255 SolverSat, 1251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3742occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 245.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 306 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 889 NumberOfCodeBlocks, 889 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 885 ConstructedInterpolants, 0 QuantifiedInterpolants, 688209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 100/100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown