java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:49:07,996 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:49:08,000 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:49:08,020 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:49:08,020 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:49:08,022 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:49:08,026 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:49:08,028 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:49:08,030 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:49:08,031 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:49:08,032 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:49:08,032 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:49:08,033 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:49:08,034 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:49:08,035 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:49:08,036 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:49:08,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:49:08,039 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:49:08,041 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:49:08,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:49:08,043 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:49:08,045 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:49:08,052 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:49:08,052 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:49:08,053 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:49:08,059 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:49:08,062 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:49:08,064 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:49:08,065 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:49:08,069 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:49:08,070 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:49:08,070 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:49:08,070 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:49:08,071 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:49:08,074 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:49:08,075 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:49:08,075 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:49:08,105 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:49:08,105 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:49:08,106 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:49:08,107 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:49:08,107 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:49:08,107 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:49:08,107 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:49:08,108 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:49:08,108 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:49:08,108 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:49:08,108 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:49:08,108 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:49:08,109 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:49:08,110 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:49:08,110 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:49:08,110 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:49:08,110 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:49:08,110 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:49:08,111 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:49:08,111 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:49:08,111 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:49:08,111 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:49:08,111 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:49:08,112 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:49:08,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:49:08,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:49:08,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:49:08,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:49:08,113 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:49:08,113 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:49:08,113 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:49:08,113 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:49:08,114 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:49:08,114 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:49:08,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:49:08,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:49:08,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:49:08,194 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:49:08,195 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:49:08,196 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-10-24 19:49:08,267 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8482a306c/67cbdc7272a740cdbc16b954ff3f25e3/FLAGbdbc1094d [2018-10-24 19:49:09,053 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:49:09,055 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-10-24 19:49:09,081 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8482a306c/67cbdc7272a740cdbc16b954ff3f25e3/FLAGbdbc1094d [2018-10-24 19:49:09,096 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8482a306c/67cbdc7272a740cdbc16b954ff3f25e3 [2018-10-24 19:49:09,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:49:09,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:49:09,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:49:09,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:49:09,119 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:49:09,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:49:09" (1/1) ... [2018-10-24 19:49:09,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2da8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:09, skipping insertion in model container [2018-10-24 19:49:09,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:49:09" (1/1) ... [2018-10-24 19:49:09,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:49:09,232 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:49:10,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:49:10,081 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:49:10,403 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:49:10,430 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:49:10,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10 WrapperNode [2018-10-24 19:49:10,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:49:10,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:49:10,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:49:10,432 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:49:10,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:49:10,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:49:10,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:49:10,822 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:49:10,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... [2018-10-24 19:49:10,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:49:10,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:49:10,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:49:10,990 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:49:10,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:49:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:49:11,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:49:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:49:11,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:49:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:49:11,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:49:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:49:11,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:49:17,151 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:49:17,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:49:17 BoogieIcfgContainer [2018-10-24 19:49:17,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:49:17,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:49:17,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:49:17,158 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:49:17,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:49:09" (1/3) ... [2018-10-24 19:49:17,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a58c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:49:17, skipping insertion in model container [2018-10-24 19:49:17,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:10" (2/3) ... [2018-10-24 19:49:17,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a58c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:49:17, skipping insertion in model container [2018-10-24 19:49:17,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:49:17" (3/3) ... [2018-10-24 19:49:17,163 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55_true-unreach-call.c [2018-10-24 19:49:17,176 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:49:17,192 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:49:17,213 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:49:17,264 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:49:17,264 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:49:17,264 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:49:17,264 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:49:17,265 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:49:17,265 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:49:17,265 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:49:17,265 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:49:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 19:49:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 19:49:17,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:17,322 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] [2018-10-24 19:49:17,326 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:17,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:17,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1276853404, now seen corresponding path program 1 times [2018-10-24 19:49:17,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:17,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:17,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:17,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:17,397 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:18,303 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:49:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:18,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:18,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:49:18,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:18,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:49:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:49:18,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:18,596 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 19:49:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:20,945 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-24 19:49:20,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:49:20,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-10-24 19:49:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:21,003 INFO L225 Difference]: With dead ends: 844 [2018-10-24 19:49:21,003 INFO L226 Difference]: Without dead ends: 530 [2018-10-24 19:49:21,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-24 19:49:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-24 19:49:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-24 19:49:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-24 19:49:21,111 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 169 [2018-10-24 19:49:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:21,112 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-24 19:49:21,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:49:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-24 19:49:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 19:49:21,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:21,130 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:49:21,131 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:21,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:21,132 INFO L82 PathProgramCache]: Analyzing trace with hash 15466080, now seen corresponding path program 1 times [2018-10-24 19:49:21,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:21,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:21,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:21,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:21,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:21,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:21,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:49:21,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:21,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:49:21,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:49:21,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:21,683 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-10-24 19:49:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:24,644 INFO L93 Difference]: Finished difference Result 1473 states and 2496 transitions. [2018-10-24 19:49:24,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:49:24,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-24 19:49:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:24,659 INFO L225 Difference]: With dead ends: 1473 [2018-10-24 19:49:24,659 INFO L226 Difference]: Without dead ends: 954 [2018-10-24 19:49:24,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-24 19:49:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 952. [2018-10-24 19:49:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-24 19:49:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1496 transitions. [2018-10-24 19:49:24,711 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1496 transitions. Word has length 182 [2018-10-24 19:49:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:24,712 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1496 transitions. [2018-10-24 19:49:24,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:49:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1496 transitions. [2018-10-24 19:49:24,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 19:49:24,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:24,719 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:49:24,719 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:24,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:24,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1708917764, now seen corresponding path program 1 times [2018-10-24 19:49:24,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:24,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:24,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:24,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:24,722 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:25,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:25,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:49:25,252 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:25,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:49:25,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:49:25,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:49:25,254 INFO L87 Difference]: Start difference. First operand 952 states and 1496 transitions. Second operand 5 states. [2018-10-24 19:49:31,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:31,153 INFO L93 Difference]: Finished difference Result 4008 states and 6512 transitions. [2018-10-24 19:49:31,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 19:49:31,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-10-24 19:49:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:31,211 INFO L225 Difference]: With dead ends: 4008 [2018-10-24 19:49:31,211 INFO L226 Difference]: Without dead ends: 3062 [2018-10-24 19:49:31,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:49:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2018-10-24 19:49:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3052. [2018-10-24 19:49:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-10-24 19:49:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 4689 transitions. [2018-10-24 19:49:31,384 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 4689 transitions. Word has length 184 [2018-10-24 19:49:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:31,385 INFO L481 AbstractCegarLoop]: Abstraction has 3052 states and 4689 transitions. [2018-10-24 19:49:31,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:49:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 4689 transitions. [2018-10-24 19:49:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 19:49:31,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:31,401 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:49:31,401 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:31,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:31,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1523085736, now seen corresponding path program 1 times [2018-10-24 19:49:31,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:31,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:31,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:31,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:31,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:31,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:31,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 19:49:31,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:31,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:49:31,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:49:31,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:49:31,767 INFO L87 Difference]: Start difference. First operand 3052 states and 4689 transitions. Second operand 7 states. [2018-10-24 19:49:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:35,304 INFO L93 Difference]: Finished difference Result 9246 states and 16253 transitions. [2018-10-24 19:49:35,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 19:49:35,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-10-24 19:49:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:35,391 INFO L225 Difference]: With dead ends: 9246 [2018-10-24 19:49:35,392 INFO L226 Difference]: Without dead ends: 6200 [2018-10-24 19:49:35,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 19:49:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6200 states. [2018-10-24 19:49:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6200 to 5920. [2018-10-24 19:49:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5920 states. [2018-10-24 19:49:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 9451 transitions. [2018-10-24 19:49:35,804 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 9451 transitions. Word has length 186 [2018-10-24 19:49:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:35,804 INFO L481 AbstractCegarLoop]: Abstraction has 5920 states and 9451 transitions. [2018-10-24 19:49:35,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 19:49:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 9451 transitions. [2018-10-24 19:49:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-24 19:49:35,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:35,828 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:49:35,829 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:35,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1271032685, now seen corresponding path program 1 times [2018-10-24 19:49:35,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:35,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:35,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:35,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:35,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:36,102 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:49:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:36,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:36,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:49:36,520 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:36,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:49:36,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:49:36,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:49:36,522 INFO L87 Difference]: Start difference. First operand 5920 states and 9451 transitions. Second operand 6 states. [2018-10-24 19:49:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:40,061 INFO L93 Difference]: Finished difference Result 18028 states and 31530 transitions. [2018-10-24 19:49:40,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:49:40,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-24 19:49:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:40,189 INFO L225 Difference]: With dead ends: 18028 [2018-10-24 19:49:40,189 INFO L226 Difference]: Without dead ends: 12114 [2018-10-24 19:49:40,225 INFO L605 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 [2018-10-24 19:49:40,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12114 states. [2018-10-24 19:49:40,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12114 to 11840. [2018-10-24 19:49:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11840 states. [2018-10-24 19:49:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11840 states to 11840 states and 19227 transitions. [2018-10-24 19:49:40,777 INFO L78 Accepts]: Start accepts. Automaton has 11840 states and 19227 transitions. Word has length 187 [2018-10-24 19:49:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:40,778 INFO L481 AbstractCegarLoop]: Abstraction has 11840 states and 19227 transitions. [2018-10-24 19:49:40,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:49:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 11840 states and 19227 transitions. [2018-10-24 19:49:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-24 19:49:40,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:40,817 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 19:49:40,817 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:40,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1769410092, now seen corresponding path program 1 times [2018-10-24 19:49:40,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:40,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:40,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:40,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:40,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:41,375 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:49:41,740 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 19:49:42,138 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-24 19:49:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:42,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:49:42,184 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:49:42,186 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-24 19:49:42,189 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [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], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 19:49:42,331 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:49:42,331 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:53:35,478 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:53:35,479 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:53:35,481 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:53:35,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:53:35,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:53:35,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:53:35,492 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:53:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:53:35,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:53:35,759 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:53:35,961 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:53:35,961 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:53:35,967 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:53:35,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:53:35 BoogieIcfgContainer [2018-10-24 19:53:35,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:53:35,968 INFO L168 Benchmark]: Toolchain (without parser) took 266856.86 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -300.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 19:53:35,970 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. [2018-10-24 19:53:35,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1315.33 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:53:35,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 389.89 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -824.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:53:35,973 INFO L168 Benchmark]: Boogie Preprocessor took 167.11 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:53:35,974 INFO L168 Benchmark]: RCFGBuilder took 6162.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 276.8 MB). Peak memory consumption was 276.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:53:35,975 INFO L168 Benchmark]: TraceAbstraction took 258814.00 ms. Allocated memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: 967.8 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 148.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 19:53:35,981 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 1315.33 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 389.89 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -824.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 167.11 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6162.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 276.8 MB). Peak memory consumption was 276.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258814.00 ms. Allocated memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: 967.8 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 148.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1521]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1521). Cancelled while BasicCegarLoop was analyzing trace of length 200 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 258.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 18.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1546 SDtfs, 3239 SDslu, 955 SDs, 0 SdLazy, 6710 SolverSat, 955 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11840occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 233.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 571 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 908 NumberOfCodeBlocks, 908 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 903 ConstructedInterpolants, 0 QuantifiedInterpolants, 558804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 51/51 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown