./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i --full-output --rcfgbuilder.size.of.a.code.block LoopFreeBlock --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -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 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01c80fcdd0a0da14cc25a34188deb5573e4a4209 --rcfgbuilder.size.of.a.code.block LoopFreeBlock ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-22 10:16:34,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 10:16:34,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 10:16:34,181 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 10:16:34,181 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 10:16:34,182 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 10:16:34,184 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 10:16:34,186 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 10:16:34,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 10:16:34,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 10:16:34,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 10:16:34,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 10:16:34,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 10:16:34,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 10:16:34,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 10:16:34,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 10:16:34,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 10:16:34,198 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 10:16:34,200 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 10:16:34,202 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 10:16:34,203 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 10:16:34,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 10:16:34,208 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 10:16:34,208 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 10:16:34,208 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 10:16:34,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 10:16:34,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 10:16:34,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 10:16:34,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 10:16:34,214 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 10:16:34,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 10:16:34,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 10:16:34,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 10:16:34,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 10:16:34,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 10:16:34,219 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 10:16:34,219 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 10:16:34,249 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 10:16:34,250 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 10:16:34,251 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 10:16:34,252 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 10:16:34,253 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 10:16:34,253 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 10:16:34,253 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 10:16:34,253 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 10:16:34,253 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 10:16:34,253 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 10:16:34,254 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 10:16:34,254 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 10:16:34,255 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 10:16:34,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 10:16:34,257 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 10:16:34,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 10:16:34,257 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 10:16:34,257 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 10:16:34,259 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 10:16:34,260 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 10:16:34,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 10:16:34,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 10:16:34,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 10:16:34,261 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 10:16:34,261 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 10:16:34,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 10:16:34,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 10:16:34,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 10:16:34,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 10:16:34,262 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 10:16:34,262 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 10:16:34,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 10:16:34,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 10:16:34,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 10:16:34,262 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01c80fcdd0a0da14cc25a34188deb5573e4a4209 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock [2018-10-22 10:16:34,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 10:16:34,331 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 10:16:34,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 10:16:34,338 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 10:16:34,339 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 10:16:34,340 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i [2018-10-22 10:16:34,413 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4aa279a36/53d37d807e994cf59a1bd256b4094d3b/FLAGc07e1ec17 [2018-10-22 10:16:34,894 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 10:16:34,895 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i [2018-10-22 10:16:34,902 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4aa279a36/53d37d807e994cf59a1bd256b4094d3b/FLAGc07e1ec17 [2018-10-22 10:16:34,915 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4aa279a36/53d37d807e994cf59a1bd256b4094d3b [2018-10-22 10:16:34,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 10:16:34,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 10:16:34,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 10:16:34,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 10:16:34,927 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 10:16:34,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:16:34" (1/1) ... [2018-10-22 10:16:34,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfb63d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:34, skipping insertion in model container [2018-10-22 10:16:34,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:16:34" (1/1) ... [2018-10-22 10:16:34,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 10:16:34,971 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 10:16:35,155 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:16:35,159 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 10:16:35,182 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:16:35,199 INFO L193 MainTranslator]: Completed translation [2018-10-22 10:16:35,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35 WrapperNode [2018-10-22 10:16:35,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 10:16:35,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 10:16:35,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 10:16:35,201 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 10:16:35,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 10:16:35,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 10:16:35,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 10:16:35,226 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 10:16:35,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (1/1) ... [2018-10-22 10:16:35,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 10:16:35,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 10:16:35,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 10:16:35,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 10:16:35,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (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 [2018-10-22 10:16:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 10:16:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 10:16:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 10:16:35,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 10:16:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 10:16:35,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 10:16:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 10:16:35,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 10:16:36,066 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 10:16:36,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:16:36 BoogieIcfgContainer [2018-10-22 10:16:36,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 10:16:36,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 10:16:36,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 10:16:36,072 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 10:16:36,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 10:16:34" (1/3) ... [2018-10-22 10:16:36,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e6dab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:16:36, skipping insertion in model container [2018-10-22 10:16:36,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:35" (2/3) ... [2018-10-22 10:16:36,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e6dab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:16:36, skipping insertion in model container [2018-10-22 10:16:36,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:16:36" (3/3) ... [2018-10-22 10:16:36,076 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-get-tag_true-unreach-call_true-termination.i [2018-10-22 10:16:36,087 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 10:16:36,095 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 10:16:36,111 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 10:16:36,145 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 10:16:36,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 10:16:36,146 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 10:16:36,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 10:16:36,146 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 10:16:36,146 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 10:16:36,146 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 10:16:36,147 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 10:16:36,147 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 10:16:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-10-22 10:16:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 10:16:36,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:16:36,172 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:16:36,175 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:16:36,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:16:36,180 INFO L82 PathProgramCache]: Analyzing trace with hash -93093297, now seen corresponding path program 1 times [2018-10-22 10:16:36,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:16:36,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:36,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:16:36,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:36,230 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:16:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:16:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:16:36,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:16:36,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 10:16:36,295 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:16:36,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 10:16:36,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 10:16:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 10:16:36,319 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-10-22 10:16:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:16:36,354 INFO L93 Difference]: Finished difference Result 88 states and 157 transitions. [2018-10-22 10:16:36,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 10:16:36,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-22 10:16:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:16:36,368 INFO L225 Difference]: With dead ends: 88 [2018-10-22 10:16:36,369 INFO L226 Difference]: Without dead ends: 43 [2018-10-22 10:16:36,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 10:16:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-22 10:16:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-22 10:16:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-22 10:16:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions. [2018-10-22 10:16:36,428 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 11 [2018-10-22 10:16:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:16:36,429 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions. [2018-10-22 10:16:36,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 10:16:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2018-10-22 10:16:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 10:16:36,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:16:36,431 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:16:36,431 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:16:36,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:16:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1136993117, now seen corresponding path program 1 times [2018-10-22 10:16:36,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:16:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:36,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:16:36,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:36,435 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:16:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:16:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:16:36,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:16:36,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 10:16:36,525 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:16:36,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 10:16:36,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 10:16:36,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 10:16:36,529 INFO L87 Difference]: Start difference. First operand 43 states and 61 transitions. Second operand 5 states. [2018-10-22 10:16:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:16:36,998 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2018-10-22 10:16:36,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 10:16:36,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-22 10:16:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:16:37,001 INFO L225 Difference]: With dead ends: 49 [2018-10-22 10:16:37,001 INFO L226 Difference]: Without dead ends: 47 [2018-10-22 10:16:37,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 10:16:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-22 10:16:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-22 10:16:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-22 10:16:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2018-10-22 10:16:37,017 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 13 [2018-10-22 10:16:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:16:37,018 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2018-10-22 10:16:37,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 10:16:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2018-10-22 10:16:37,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-22 10:16:37,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:16:37,020 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:16:37,021 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:16:37,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:16:37,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1876438848, now seen corresponding path program 1 times [2018-10-22 10:16:37,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:16:37,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:37,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:16:37,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:37,024 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:16:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:16:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:16:37,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:16:37,211 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 10:16:37,212 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-10-22 10:16:37,215 INFO L202 CegarAbsIntRunner]: [0], [4], [15], [21], [24], [98], [101], [103], [106], [108], [109], [110], [111], [113], [114], [115], [145] [2018-10-22 10:16:37,260 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 10:16:37,260 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 10:16:37,416 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 10:16:37,417 INFO L272 AbstractInterpreter]: Visited 16 different actions 20 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-10-22 10:16:37,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:16:37,462 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 10:16:37,560 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 75% of their original sizes. [2018-10-22 10:16:37,560 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 10:16:37,675 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 10:16:37,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 10:16:37,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2018-10-22 10:16:37,677 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:16:37,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 10:16:37,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 10:16:37,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-22 10:16:37,679 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand 7 states. [2018-10-22 10:16:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:16:38,882 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2018-10-22 10:16:38,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 10:16:38,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-10-22 10:16:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:16:38,887 INFO L225 Difference]: With dead ends: 69 [2018-10-22 10:16:38,887 INFO L226 Difference]: Without dead ends: 65 [2018-10-22 10:16:38,888 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-22 10:16:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-22 10:16:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-10-22 10:16:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-22 10:16:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2018-10-22 10:16:38,914 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 18 [2018-10-22 10:16:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:16:38,915 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2018-10-22 10:16:38,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 10:16:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2018-10-22 10:16:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-22 10:16:38,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:16:38,917 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:16:38,918 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:16:38,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:16:38,918 INFO L82 PathProgramCache]: Analyzing trace with hash 609798897, now seen corresponding path program 1 times [2018-10-22 10:16:38,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:16:38,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:38,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:16:38,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:16:38,920 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:16:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:16:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-22 10:16:39,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 10:16:39,091 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 10:16:39,091 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-10-22 10:16:39,091 INFO L202 CegarAbsIntRunner]: [0], [4], [15], [21], [24], [28], [33], [36], [98], [101], [103], [106], [108], [109], [110], [111], [113], [114], [115], [117], [118], [119], [120], [145] [2018-10-22 10:16:39,093 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 10:16:39,093 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 10:16:39,323 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 10:16:39,324 INFO L272 AbstractInterpreter]: Visited 23 different actions 238 times. Merged at 9 different actions 63 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-10-22 10:16:39,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:16:39,353 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 10:16:39,404 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 80% of their original sizes. [2018-10-22 10:16:39,405 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 10:16:39,570 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 10:16:39,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 10:16:39,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-22 10:16:39,571 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:16:39,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 10:16:39,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 10:16:39,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-22 10:16:39,572 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand 9 states. [2018-10-22 10:16:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:16:40,827 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2018-10-22 10:16:40,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-22 10:16:40,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-10-22 10:16:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:16:40,830 INFO L225 Difference]: With dead ends: 63 [2018-10-22 10:16:40,830 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 10:16:40,832 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-22 10:16:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 10:16:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 10:16:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 10:16:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 10:16:40,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-10-22 10:16:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:16:40,833 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 10:16:40,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 10:16:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 10:16:40,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 10:16:40,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 10:16:41,905 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 10:16:41,905 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:16:41,906 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 10:16:41,906 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 10:16:41,906 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 10:16:41,906 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 10:16:41,906 INFO L421 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,906 INFO L428 ceAbstractionStarter]: At program point L60(lines 11 63) the Hoare annotation is: true [2018-10-22 10:16:41,907 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,907 INFO L421 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,907 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 63) no Hoare annotation was computed. [2018-10-22 10:16:41,907 INFO L425 ceAbstractionStarter]: For program point L56(line 56) no Hoare annotation was computed. [2018-10-22 10:16:41,907 INFO L425 ceAbstractionStarter]: For program point L52(lines 52 54) no Hoare annotation was computed. [2018-10-22 10:16:41,907 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-10-22 10:16:41,907 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 10:16:41,907 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-10-22 10:16:41,908 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 54) no Hoare annotation was computed. [2018-10-22 10:16:41,911 INFO L421 ceAbstractionStarter]: At program point L40-1(lines 40 54) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,912 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* 2 main_~tagbuf_len~0))) (and (<= .cse0 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= main_~tagbuf_len~0 main_~t~0) (<= 0 .cse0))) [2018-10-22 10:16:41,912 INFO L421 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* 2 main_~tagbuf_len~0))) (and (<= .cse0 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= main_~tagbuf_len~0 main_~t~0) (<= 0 .cse0))) [2018-10-22 10:16:41,912 INFO L425 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-10-22 10:16:41,912 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-10-22 10:16:41,912 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-10-22 10:16:41,912 INFO L421 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (* 2 main_~tagbuf_len~0))) (and (<= .cse0 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= main_~tagbuf_len~0 main_~t~0) (<= 0 .cse0))) [2018-10-22 10:16:41,912 INFO L421 ceAbstractionStarter]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse0 (* 2 main_~tagbuf_len~0))) (and (<= .cse0 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= main_~tagbuf_len~0 main_~t~0) (<= 0 .cse0))) [2018-10-22 10:16:41,912 INFO L425 ceAbstractionStarter]: For program point L45(lines 45 49) no Hoare annotation was computed. [2018-10-22 10:16:41,913 INFO L425 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-10-22 10:16:41,913 INFO L421 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (* 2 main_~tagbuf_len~0))) (and (<= .cse0 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= main_~tagbuf_len~0 main_~t~0) (<= 0 .cse0))) [2018-10-22 10:16:41,913 INFO L421 ceAbstractionStarter]: At program point L46-1(line 46) the Hoare annotation is: (let ((.cse0 (* 2 main_~tagbuf_len~0))) (and (<= .cse0 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= main_~tagbuf_len~0 main_~t~0) (<= 0 .cse0))) [2018-10-22 10:16:41,913 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 63) no Hoare annotation was computed. [2018-10-22 10:16:41,913 INFO L421 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,913 INFO L421 ceAbstractionStarter]: At program point L42-1(line 42) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,913 INFO L425 ceAbstractionStarter]: For program point L34-1(lines 34 58) no Hoare annotation was computed. [2018-10-22 10:16:41,914 INFO L421 ceAbstractionStarter]: At program point L34-3(lines 34 58) the Hoare annotation is: (and (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2018-10-22 10:16:41,914 INFO L421 ceAbstractionStarter]: At program point L34-4(lines 34 58) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,914 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 63) the Hoare annotation is: true [2018-10-22 10:16:41,914 INFO L421 ceAbstractionStarter]: At program point L59(line 59) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,914 INFO L421 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,914 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 30) no Hoare annotation was computed. [2018-10-22 10:16:41,914 INFO L421 ceAbstractionStarter]: At program point L18-3(lines 18 30) the Hoare annotation is: (and (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2018-10-22 10:16:41,915 INFO L421 ceAbstractionStarter]: At program point L18-4(lines 18 30) the Hoare annotation is: (and (<= (+ main_~t~0 1) main_~tagbuf_len~0) (<= (* 2 main_~tagbuf_len~0) 4294967292) (<= 0 main_~t~0)) [2018-10-22 10:16:41,915 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-10-22 10:16:41,915 INFO L425 ceAbstractionStarter]: For program point L35(lines 35 39) no Hoare annotation was computed. [2018-10-22 10:16:41,915 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 10:16:41,915 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 10:16:41,915 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:16:41,915 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 10:16:41,916 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 10:16:41,916 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 10:16:41,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 10:16:41 BoogieIcfgContainer [2018-10-22 10:16:41,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 10:16:41,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 10:16:41,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 10:16:41,932 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 10:16:41,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:16:36" (3/4) ... [2018-10-22 10:16:41,938 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 10:16:41,945 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 10:16:41,945 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 10:16:41,946 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 10:16:41,952 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-10-22 10:16:41,953 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-10-22 10:16:41,953 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-22 10:16:42,014 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 10:16:42,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 10:16:42,016 INFO L168 Benchmark]: Toolchain (without parser) took 7095.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.7 MB). Free memory was 949.1 MB in the beginning and 1.2 GB in the end (delta: -247.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:16:42,018 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:16:42,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.43 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 10:16:42,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.67 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:16:42,020 INFO L168 Benchmark]: Boogie Preprocessor took 51.26 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:16:42,020 INFO L168 Benchmark]: RCFGBuilder took 789.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -193.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2018-10-22 10:16:42,022 INFO L168 Benchmark]: TraceAbstraction took 5862.76 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.3 MB). Peak memory consumption was 321.0 MB. Max. memory is 11.5 GB. [2018-10-22 10:16:42,023 INFO L168 Benchmark]: Witness Printer took 83.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2018-10-22 10:16:42,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.43 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.67 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.26 ms. Allocated memory is still 1.0 GB. Free memory is still 938.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 789.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 938.4 MB in the beginning and 1.1 GB in the end (delta: -193.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5862.76 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.3 MB). Peak memory consumption was 321.0 MB. Max. memory is 11.5 GB. * Witness Printer took 83.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (2 * tagbuf_len <= 4294967292 && t <= tagbuf_len) && 0 <= t - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (2 * tagbuf_len <= 4294967292 && t <= tagbuf_len) && 0 <= t - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 1 error locations. SAFE Result, 5.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 1.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 192 SDtfs, 94 SDslu, 326 SDs, 0 SdLazy, 120 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.8945578231292516 AbsIntWeakeningRatio, 0.42857142857142855 AbsIntAvgWeakeningVarsNumRemoved, 2.0408163265306123 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 61 PreInvPairs, 87 NumberOfFragments, 272 HoareAnnotationTreeSize, 61 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 1148 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 3073 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 12/23 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...