./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/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 77e92a11a4549a6f714898b45c2d349723607a29 .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 03:01:27,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:01:27,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:01:27,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:01:27,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:01:27,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:01:27,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:01:27,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:01:27,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:01:27,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:01:27,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:01:27,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:01:27,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:01:27,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:01:27,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:01:27,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:01:27,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:01:27,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:01:27,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:01:27,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:01:27,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:01:27,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:01:27,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:01:27,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:01:27,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:01:27,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:01:27,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:01:27,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:01:27,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:01:27,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:01:27,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:01:27,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:01:27,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:01:27,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:01:27,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:01:27,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:01:27,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:01:27,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:01:27,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:01:27,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:01:27,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:01:27,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 03:01:27,310 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:01:27,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:01:27,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:01:27,314 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:01:27,314 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:01:27,314 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:01:27,315 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 03:01:27,315 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:01:27,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:01:27,315 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 03:01:27,315 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 03:01:27,316 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:01:27,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 03:01:27,316 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 03:01:27,316 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 03:01:27,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:01:27,317 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:01:27,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 03:01:27,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:01:27,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:01:27,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:01:27,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:01:27,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:01:27,319 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:01:27,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:01:27,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:01:27,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:01:27,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:01:27,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:01:27,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:01:27,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:01:27,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:01:27,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:01:27,321 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 03:01:27,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 03:01:27,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:01:27,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:01:27,322 INFO L138 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/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/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 -> 77e92a11a4549a6f714898b45c2d349723607a29 [2019-11-26 03:01:27,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:01:27,462 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:01:27,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:01:27,468 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:01:27,469 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:01:27,469 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2019-11-26 03:01:27,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/data/55b53cdbe/fc4eebc161764cf6904cf1e1251e2744/FLAG94dfc048b [2019-11-26 03:01:27,899 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:01:27,900 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2019-11-26 03:01:27,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/data/55b53cdbe/fc4eebc161764cf6904cf1e1251e2744/FLAG94dfc048b [2019-11-26 03:01:28,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/data/55b53cdbe/fc4eebc161764cf6904cf1e1251e2744 [2019-11-26 03:01:28,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:01:28,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:01:28,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:01:28,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:01:28,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:01:28,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee7c7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28, skipping insertion in model container [2019-11-26 03:01:28,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:01:28,293 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:01:28,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:01:28,489 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:01:28,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:01:28,581 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:01:28,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28 WrapperNode [2019-11-26 03:01:28,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:01:28,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:01:28,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:01:28,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:01:28,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:01:28,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:01:28,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:01:28,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:01:28,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... [2019-11-26 03:01:28,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:01:28,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:01:28,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:01:28,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:01:28,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/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 [2019-11-26 03:01:28,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:01:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:01:29,041 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:01:29,041 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 03:01:29,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:29 BoogieIcfgContainer [2019-11-26 03:01:29,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:01:29,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:01:29,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:01:29,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:01:29,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:01:28" (1/3) ... [2019-11-26 03:01:29,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0cac96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:01:29, skipping insertion in model container [2019-11-26 03:01:29,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:28" (2/3) ... [2019-11-26 03:01:29,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0cac96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:01:29, skipping insertion in model container [2019-11-26 03:01:29,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:29" (3/3) ... [2019-11-26 03:01:29,049 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2019-11-26 03:01:29,057 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:01:29,063 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-26 03:01:29,073 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-26 03:01:29,096 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:01:29,096 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 03:01:29,096 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:01:29,096 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:01:29,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:01:29,097 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:01:29,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:01:29,097 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:01:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-26 03:01:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 03:01:29,115 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:29,116 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:29,116 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:01:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:29,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1314021635, now seen corresponding path program 1 times [2019-11-26 03:01:29,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:01:29,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262685105] [2019-11-26 03:01:29,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:01:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:29,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262685105] [2019-11-26 03:01:29,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:29,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 03:01:29,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552039195] [2019-11-26 03:01:29,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 03:01:29,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:01:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 03:01:29,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 03:01:29,292 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-11-26 03:01:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:29,386 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-11-26 03:01:29,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 03:01:29,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-26 03:01:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:29,394 INFO L225 Difference]: With dead ends: 36 [2019-11-26 03:01:29,394 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 03:01:29,397 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:01:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 03:01:29,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-26 03:01:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-26 03:01:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-26 03:01:29,421 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2019-11-26 03:01:29,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:29,422 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-26 03:01:29,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 03:01:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-26 03:01:29,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 03:01:29,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:29,423 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:29,423 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:01:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:29,423 INFO L82 PathProgramCache]: Analyzing trace with hash 54563046, now seen corresponding path program 1 times [2019-11-26 03:01:29,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:01:29,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248157479] [2019-11-26 03:01:29,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:01:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:29,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248157479] [2019-11-26 03:01:29,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:29,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 03:01:29,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177732116] [2019-11-26 03:01:29,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 03:01:29,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:01:29,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 03:01:29,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 03:01:29,480 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2019-11-26 03:01:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:29,666 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-11-26 03:01:29,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 03:01:29,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-26 03:01:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:29,668 INFO L225 Difference]: With dead ends: 23 [2019-11-26 03:01:29,668 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 03:01:29,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:01:29,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 03:01:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-26 03:01:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 03:01:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-26 03:01:29,674 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2019-11-26 03:01:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:29,674 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-26 03:01:29,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 03:01:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-26 03:01:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-26 03:01:29,675 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:29,675 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:29,675 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:01:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:29,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1785729290, now seen corresponding path program 1 times [2019-11-26 03:01:29,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:01:29,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955451889] [2019-11-26 03:01:29,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:01:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 03:01:29,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955451889] [2019-11-26 03:01:29,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162548351] [2019-11-26 03:01:29,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:01:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:29,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 03:01:29,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:29,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:01:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:29,896 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:29,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860422756] [2019-11-26 03:01:30,009 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-26 03:01:30,015 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 03:01:30,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 03:01:30,026 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 03:01:30,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 03:01:30,275 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 03:01:31,345 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 03:01:31,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 03:01:31,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2019-11-26 03:01:31,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905685575] [2019-11-26 03:01:31,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 03:01:31,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:01:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 03:01:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2019-11-26 03:01:31,349 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 12 states. [2019-11-26 03:01:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:31,634 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-11-26 03:01:31,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-26 03:01:31,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-26 03:01:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:31,636 INFO L225 Difference]: With dead ends: 26 [2019-11-26 03:01:31,636 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 03:01:31,637 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=239, Invalid=1167, Unknown=0, NotChecked=0, Total=1406 [2019-11-26 03:01:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 03:01:31,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 03:01:31,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 03:01:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 03:01:31,638 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-26 03:01:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:31,638 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 03:01:31,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 03:01:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 03:01:31,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 03:01:31,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:01:31,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 03:01:31,960 INFO L440 ceAbstractionStarter]: At program point L35-3(lines 35 39) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse1 (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0)) (.cse2 (<= 1 ULTIMATE.start_main_~p~0))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~bufsize_0~0) (<= (+ ULTIMATE.start_main_~bufsize~0 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~bufsize_0~0) .cse2 (<= 0 ULTIMATE.start_main_~i~0)) (and .cse0 (<= .cse1 (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2))) [2019-11-26 03:01:31,960 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 03:01:31,960 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-26 03:01:31,960 INFO L447 ceAbstractionStarter]: At program point L40(lines 11 42) the Hoare annotation is: true [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point L24-1(lines 11 42) no Hoare annotation was computed. [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 03:01:31,961 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~leader_len~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (<= 1 ULTIMATE.start_main_~p~0)) [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-26 03:01:31,961 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 03:01:31,962 INFO L440 ceAbstractionStarter]: At program point L4-5(lines 3 8) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~leader_len~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~p~0)) [2019-11-26 03:01:31,962 INFO L444 ceAbstractionStarter]: For program point L25(lines 11 42) no Hoare annotation was computed. [2019-11-26 03:01:31,962 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-26 03:01:31,962 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 03:01:31,962 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-26 03:01:31,962 INFO L444 ceAbstractionStarter]: For program point L26(lines 11 42) no Hoare annotation was computed. [2019-11-26 03:01:31,962 INFO L444 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-26 03:01:31,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 03:01:31 BoogieIcfgContainer [2019-11-26 03:01:31,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 03:01:31,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 03:01:31,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 03:01:31,975 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 03:01:31,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:29" (3/4) ... [2019-11-26 03:01:31,978 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 03:01:31,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-26 03:01:31,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 03:01:32,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_de7099e6-216f-4685-99f7-96f3682af9c0/bin/utaipan/witness.graphml [2019-11-26 03:01:32,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 03:01:32,034 INFO L168 Benchmark]: Toolchain (without parser) took 3782.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,034 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:32,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:32,035 INFO L168 Benchmark]: Boogie Preprocessor took 21.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,036 INFO L168 Benchmark]: RCFGBuilder took 405.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,036 INFO L168 Benchmark]: TraceAbstraction took 2931.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,037 INFO L168 Benchmark]: Witness Printer took 57.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,039 INFO L335 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 330.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 405.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2931.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. * Witness Printer took 57.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((1 <= leader_len && p + 2 <= bufsize_0) && 2 * ielen + p <= bufsize_0 + 2 * i) && 1 == cond) && 1 <= p - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((1 <= leader_len && 2 * ielen + p <= bufsize_0) && bufsize + p <= bufsize_0) && 1 <= p) && 0 <= i) || (((1 <= leader_len && 2 * ielen + p <= bufsize_0 + 2 * i) && 1 == cond) && 1 <= p) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((1 <= leader_len && p + 2 <= bufsize_0) && !(0 == cond)) && 2 * ielen + p <= bufsize_0 + 2 * i) && 1 <= p - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 45 SDtfs, 52 SDslu, 92 SDs, 0 SdLazy, 90 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 5864 SizeOfPredicates, 11 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...