./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan --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 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:43:52,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:43:52,244 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:43:52,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:43:52,251 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:43:52,252 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:43:52,252 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:43:52,253 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:43:52,254 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:43:52,255 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:43:52,255 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:43:52,255 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:43:52,256 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:43:52,257 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:43:52,257 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:43:52,258 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:43:52,258 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:43:52,260 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:43:52,261 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:43:52,262 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:43:52,263 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:43:52,263 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:43:52,265 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:43:52,265 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:43:52,265 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:43:52,266 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:43:52,266 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:43:52,267 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:43:52,268 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:43:52,268 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:43:52,268 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:43:52,269 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:43:52,269 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:43:52,269 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:43:52,270 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:43:52,270 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:43:52,271 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 04:43:52,279 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:43:52,279 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:43:52,280 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:43:52,280 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 04:43:52,280 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 04:43:52,281 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 04:43:52,281 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 04:43:52,281 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 04:43:52,281 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 04:43:52,281 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 04:43:52,281 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 04:43:52,282 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:43:52,282 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:43:52,282 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:43:52,283 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:43:52,283 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:43:52,283 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:43:52,283 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:43:52,283 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:43:52,283 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:43:52,283 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:43:52,284 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:43:52,284 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:43:52,284 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:43:52,284 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:43:52,284 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:43:52,284 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:43:52,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:43:52,285 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:43:52,285 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:43:52,285 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 04:43:52,285 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:43:52,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:43:52,285 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 04:43:52,286 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan 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 [2018-11-10 04:43:52,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:43:52,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:43:52,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:43:52,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:43:52,321 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:43:52,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i [2018-11-10 04:43:52,361 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/data/c07f92d05/abafe078496a45499e11bd23af5bcaa4/FLAG8edd920a8 [2018-11-10 04:43:52,744 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:43:52,744 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/sv-benchmarks/c/loop-invgen/apache-get-tag_true-unreach-call_true-termination.i [2018-11-10 04:43:52,748 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/data/c07f92d05/abafe078496a45499e11bd23af5bcaa4/FLAG8edd920a8 [2018-11-10 04:43:52,757 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/data/c07f92d05/abafe078496a45499e11bd23af5bcaa4 [2018-11-10 04:43:52,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:43:52,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 04:43:52,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:43:52,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:43:52,764 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:43:52,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d89bcad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52, skipping insertion in model container [2018-11-10 04:43:52,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:43:52,785 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:43:52,885 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:43:52,887 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:43:52,900 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:43:52,909 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:43:52,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52 WrapperNode [2018-11-10 04:43:52,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:43:52,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 04:43:52,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 04:43:52,910 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 04:43:52,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 04:43:52,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:43:52,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:43:52,923 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:43:52,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... [2018-11-10 04:43:52,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:43:52,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:43:52,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:43:52,940 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:43:52,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:43:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:43:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:43:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:43:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:43:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:43:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:43:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 04:43:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 04:43:53,193 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:43:53,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:43:53 BoogieIcfgContainer [2018-11-10 04:43:53,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:43:53,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:43:53,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:43:53,196 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:43:53,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:43:52" (1/3) ... [2018-11-10 04:43:53,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c53496a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:43:53, skipping insertion in model container [2018-11-10 04:43:53,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:43:52" (2/3) ... [2018-11-10 04:43:53,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c53496a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:43:53, skipping insertion in model container [2018-11-10 04:43:53,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:43:53" (3/3) ... [2018-11-10 04:43:53,199 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-get-tag_true-unreach-call_true-termination.i [2018-11-10 04:43:53,207 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:43:53,213 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:43:53,227 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:43:53,256 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:43:53,256 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:43:53,257 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:43:53,257 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:43:53,257 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:43:53,257 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:43:53,257 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:43:53,257 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:43:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-10 04:43:53,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 04:43:53,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:43:53,279 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:43:53,281 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:43:53,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:43:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1656305570, now seen corresponding path program 1 times [2018-11-10 04:43:53,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:43:53,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:53,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:43:53,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:53,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:43:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:43:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:43:53,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:43:53,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:43:53,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:43:53,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:43:53,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:43:53,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:43:53,382 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-11-10 04:43:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:43:53,406 INFO L93 Difference]: Finished difference Result 91 states and 160 transitions. [2018-11-10 04:43:53,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:43:53,407 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-10 04:43:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:43:53,413 INFO L225 Difference]: With dead ends: 91 [2018-11-10 04:43:53,413 INFO L226 Difference]: Without dead ends: 44 [2018-11-10 04:43:53,416 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 [2018-11-10 04:43:53,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-10 04:43:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-10 04:43:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 04:43:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2018-11-10 04:43:53,443 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 12 [2018-11-10 04:43:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:43:53,443 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2018-11-10 04:43:53,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:43:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2018-11-10 04:43:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 04:43:53,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:43:53,444 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:43:53,445 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:43:53,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:43:53,445 INFO L82 PathProgramCache]: Analyzing trace with hash -145433870, now seen corresponding path program 1 times [2018-11-10 04:43:53,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:43:53,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:53,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:43:53,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:53,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:43:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:43:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:43:53,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:43:53,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:43:53,491 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:43:53,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:43:53,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:43:53,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:43:53,493 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand 5 states. [2018-11-10 04:43:53,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:43:53,646 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2018-11-10 04:43:53,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:43:53,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 04:43:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:43:53,647 INFO L225 Difference]: With dead ends: 50 [2018-11-10 04:43:53,647 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 04:43:53,648 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 [2018-11-10 04:43:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 04:43:53,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-10 04:43:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 04:43:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2018-11-10 04:43:53,658 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 14 [2018-11-10 04:43:53,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:43:53,658 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2018-11-10 04:43:53,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:43:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2018-11-10 04:43:53,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 04:43:53,659 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:43:53,659 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:43:53,659 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:43:53,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:43:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash 840682065, now seen corresponding path program 1 times [2018-11-10 04:43:53,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:43:53,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:53,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:43:53,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:53,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:43:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:43:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:43:53,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:43:53,713 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 04:43:53,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-11-10 04:43:53,716 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [15], [21], [24], [98], [101], [103], [106], [108], [109], [110], [111], [113], [114], [115] [2018-11-10 04:43:53,748 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 04:43:53,748 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 04:43:53,832 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 04:43:53,833 INFO L272 AbstractInterpreter]: Visited 17 different actions 21 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-11-10 04:43:53,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:43:53,838 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 04:43:53,881 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 75% of their original sizes. [2018-11-10 04:43:53,882 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 04:43:53,943 INFO L415 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2018-11-10 04:43:53,943 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 04:43:53,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:43:53,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-11-10 04:43:53,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:43:53,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 04:43:53,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 04:43:53,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:43:53,945 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 8 states. [2018-11-10 04:43:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:43:54,403 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2018-11-10 04:43:54,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:43:54,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-11-10 04:43:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:43:54,404 INFO L225 Difference]: With dead ends: 70 [2018-11-10 04:43:54,405 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 04:43:54,405 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:43:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 04:43:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2018-11-10 04:43:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-10 04:43:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-11-10 04:43:54,416 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 19 [2018-11-10 04:43:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:43:54,416 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-11-10 04:43:54,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 04:43:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-11-10 04:43:54,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 04:43:54,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:43:54,417 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, 1] [2018-11-10 04:43:54,417 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:43:54,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:43:54,417 INFO L82 PathProgramCache]: Analyzing trace with hash 2142997440, now seen corresponding path program 1 times [2018-11-10 04:43:54,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:43:54,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:54,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:43:54,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:43:54,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:43:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:43:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 04:43:54,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:43:54,480 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 04:43:54,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-11-10 04:43:54,480 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [11], [15], [21], [24], [28], [33], [36], [98], [101], [103], [106], [108], [109], [110], [111], [113], [114], [115], [117], [118], [119], [120] [2018-11-10 04:43:54,481 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 04:43:54,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 04:43:54,590 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 04:43:54,590 INFO L272 AbstractInterpreter]: Visited 24 different actions 239 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. [2018-11-10 04:43:54,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:43:54,592 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 04:43:54,628 INFO L227 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 80% of their original sizes. [2018-11-10 04:43:54,629 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 04:43:54,689 INFO L415 sIntCurrentIteration]: We unified 33 AI predicates to 33 [2018-11-10 04:43:54,690 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 04:43:54,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:43:54,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-10 04:43:54,690 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:43:54,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 04:43:54,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 04:43:54,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:43:54,691 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 10 states. [2018-11-10 04:43:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:43:55,129 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2018-11-10 04:43:55,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 04:43:55,130 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-11-10 04:43:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:43:55,130 INFO L225 Difference]: With dead ends: 64 [2018-11-10 04:43:55,136 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 04:43:55,137 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:43:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 04:43:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 04:43:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 04:43:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 04:43:55,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-11-10 04:43:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:43:55,138 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:43:55,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 04:43:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 04:43:55,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 04:43:55,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 04:43:55,474 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 04:43:55,474 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:43:55,474 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:43:55,474 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 04:43:55,474 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 04:43:55,475 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 04:43:55,475 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)) [2018-11-10 04:43:55,475 INFO L428 ceAbstractionStarter]: At program point L60(lines 11 63) the Hoare annotation is: true [2018-11-10 04:43:55,475 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)) [2018-11-10 04:43:55,475 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)) [2018-11-10 04:43:55,475 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 63) no Hoare annotation was computed. [2018-11-10 04:43:55,475 INFO L425 ceAbstractionStarter]: For program point L56(line 56) no Hoare annotation was computed. [2018-11-10 04:43:55,475 INFO L425 ceAbstractionStarter]: For program point L52(lines 52 54) no Hoare annotation was computed. [2018-11-10 04:43:55,475 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-11-10 04:43:55,476 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-10 04:43:55,476 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-11-10 04:43:55,476 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 54) no Hoare annotation was computed. [2018-11-10 04:43:55,476 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)) [2018-11-10 04:43:55,476 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) (<= 2 .cse0))) [2018-11-10 04:43:55,476 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) (<= 2 .cse0))) [2018-11-10 04:43:55,476 INFO L425 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-11-10 04:43:55,477 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-10 04:43:55,477 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-11-10 04:43:55,477 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))) [2018-11-10 04:43:55,478 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))) [2018-11-10 04:43:55,478 INFO L425 ceAbstractionStarter]: For program point L45(lines 45 49) no Hoare annotation was computed. [2018-11-10 04:43:55,478 INFO L425 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-11-10 04:43:55,478 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) (<= 2 .cse0))) [2018-11-10 04:43:55,478 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) (<= 2 .cse0))) [2018-11-10 04:43:55,478 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 63) no Hoare annotation was computed. [2018-11-10 04:43:55,478 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)) [2018-11-10 04:43:55,478 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)) [2018-11-10 04:43:55,478 INFO L425 ceAbstractionStarter]: For program point L34-1(lines 34 58) no Hoare annotation was computed. [2018-11-10 04:43:55,478 INFO L421 ceAbstractionStarter]: At program point L34-3(lines 34 58) the Hoare annotation is: (let ((.cse0 (* 2 main_~tagbuf_len~0))) (and (<= .cse0 4294967292) (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0) (<= 2 .cse0))) [2018-11-10 04:43:55,479 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)) [2018-11-10 04:43:55,479 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 63) the Hoare annotation is: true [2018-11-10 04:43:55,479 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)) [2018-11-10 04:43:55,479 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)) [2018-11-10 04:43:55,479 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 30) no Hoare annotation was computed. [2018-11-10 04:43:55,479 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)) [2018-11-10 04:43:55,479 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)) [2018-11-10 04:43:55,479 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-10 04:43:55,479 INFO L425 ceAbstractionStarter]: For program point L35(lines 35 39) no Hoare annotation was computed. [2018-11-10 04:43:55,479 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 04:43:55,480 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 04:43:55,480 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 04:43:55,480 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 04:43:55,480 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 04:43:55,480 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 04:43:55,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:43:55 BoogieIcfgContainer [2018-11-10 04:43:55,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:43:55,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:43:55,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:43:55,487 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:43:55,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:43:53" (3/4) ... [2018-11-10 04:43:55,490 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 04:43:55,493 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 04:43:55,494 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 04:43:55,494 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 04:43:55,497 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-11-10 04:43:55,497 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 04:43:55,497 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 04:43:55,534 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1639b548-68be-4a15-b562-1a6a8c11ae93/bin-2019/utaipan/witness.graphml [2018-11-10 04:43:55,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:43:55,535 INFO L168 Benchmark]: Toolchain (without parser) took 2774.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -86.3 MB). Peak memory consumption was 56.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:43:55,536 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:43:55,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.58 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:43:55,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.40 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:43:55,536 INFO L168 Benchmark]: Boogie Preprocessor took 17.21 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:43:55,536 INFO L168 Benchmark]: RCFGBuilder took 253.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:43:55,537 INFO L168 Benchmark]: TraceAbstraction took 2292.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:43:55,537 INFO L168 Benchmark]: Witness Printer took 47.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:43:55,538 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.58 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 12.40 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.21 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 253.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2292.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 11.5 GB. * Witness Printer took 47.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 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) && 2 <= 2 * tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 201 SDtfs, 139 SDslu, 359 SDs, 0 SdLazy, 169 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.8986928104575163 AbsIntWeakeningRatio, 0.4117647058823529 AbsIntAvgWeakeningVarsNumRemoved, 1.9607843137254901 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 61 PreInvPairs, 87 NumberOfFragments, 277 HoareAnnotationTreeSize, 61 FomulaSimplifications, 304 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 773 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 3287 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...