./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/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 33e9ff70181f23aec46a4e91eec467338569fa5a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:53:58,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:53:58,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:53:58,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:53:58,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:53:58,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:53:58,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:53:58,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:53:58,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:53:58,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:53:58,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:53:58,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:53:58,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:53:58,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:53:58,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:53:58,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:53:58,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:53:58,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:53:58,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:53:58,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:53:58,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:53:58,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:53:58,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:53:58,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:53:58,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:53:58,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:53:58,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:53:58,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:53:58,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:53:58,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:53:58,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:53:58,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:53:58,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:53:58,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:53:58,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:53:58,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:53:58,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:53:58,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:53:58,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:53:58,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:53:58,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:53:58,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:53:58,363 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:53:58,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:53:58,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:53:58,364 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:53:58,364 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:53:58,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:53:58,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:53:58,365 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:53:58,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:53:58,365 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:53:58,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:53:58,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:53:58,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:53:58,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:53:58,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:53:58,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:53:58,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:53:58,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:53:58,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:53:58,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:53:58,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:53:58,367 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:53:58,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:53:58,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:53:58,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:53:58,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:53:58,368 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_7b02674c-25d9-426b-aa54-15ba7cf38eb8/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 -> 33e9ff70181f23aec46a4e91eec467338569fa5a [2019-12-07 20:53:58,470 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:53:58,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:53:58,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:53:58,483 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:53:58,484 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:53:58,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/../../sv-benchmarks/c/ssh-simplified/s3_srvr_1.cil-1.c [2019-12-07 20:53:58,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/data/ae187dcad/c5047158d5b44cbcaa24fe43f8c8a1ff/FLAG8b5b592f5 [2019-12-07 20:53:58,896 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:53:58,896 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/sv-benchmarks/c/ssh-simplified/s3_srvr_1.cil-1.c [2019-12-07 20:53:58,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/data/ae187dcad/c5047158d5b44cbcaa24fe43f8c8a1ff/FLAG8b5b592f5 [2019-12-07 20:53:58,915 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/data/ae187dcad/c5047158d5b44cbcaa24fe43f8c8a1ff [2019-12-07 20:53:58,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:53:58,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:53:58,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:53:58,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:53:58,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:53:58,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:53:58" (1/1) ... [2019-12-07 20:53:58,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2606afee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:58, skipping insertion in model container [2019-12-07 20:53:58,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:53:58" (1/1) ... [2019-12-07 20:53:58,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:53:58,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:53:59,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:53:59,137 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:53:59,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:53:59,181 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:53:59,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59 WrapperNode [2019-12-07 20:53:59,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:53:59,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:53:59,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:53:59,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:53:59,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:53:59,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:53:59,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:53:59,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:53:59,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... [2019-12-07 20:53:59,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:53:59,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:53:59,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:53:59,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:53:59,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/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 [2019-12-07 20:53:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:53:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:53:59,353 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 20:53:59,648 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-12-07 20:53:59,648 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-12-07 20:53:59,804 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:53:59,804 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 20:53:59,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:53:59 BoogieIcfgContainer [2019-12-07 20:53:59,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:53:59,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:53:59,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:53:59,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:53:59,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:53:58" (1/3) ... [2019-12-07 20:53:59,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553103fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:53:59, skipping insertion in model container [2019-12-07 20:53:59,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:53:59" (2/3) ... [2019-12-07 20:53:59,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553103fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:53:59, skipping insertion in model container [2019-12-07 20:53:59,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:53:59" (3/3) ... [2019-12-07 20:53:59,812 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2019-12-07 20:53:59,821 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:53:59,827 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:53:59,837 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:53:59,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:53:59,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:53:59,854 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:53:59,854 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:53:59,854 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:53:59,854 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:53:59,854 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:53:59,854 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:53:59,866 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2019-12-07 20:53:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 20:53:59,871 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:53:59,871 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:53:59,872 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:53:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:53:59,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1118453828, now seen corresponding path program 1 times [2019-12-07 20:53:59,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:53:59,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871590057] [2019-12-07 20:53:59,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:53:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:54:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:54:00,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871590057] [2019-12-07 20:54:00,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:54:00,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:54:00,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725610034] [2019-12-07 20:54:00,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:54:00,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:54:00,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:54:00,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:54:00,024 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 3 states. [2019-12-07 20:54:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:54:00,147 INFO L93 Difference]: Finished difference Result 233 states and 402 transitions. [2019-12-07 20:54:00,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:54:00,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-12-07 20:54:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:54:00,157 INFO L225 Difference]: With dead ends: 233 [2019-12-07 20:54:00,157 INFO L226 Difference]: Without dead ends: 122 [2019-12-07 20:54:00,159 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:54:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-12-07 20:54:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2019-12-07 20:54:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-12-07 20:54:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2019-12-07 20:54:00,189 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 40 [2019-12-07 20:54:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:54:00,190 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2019-12-07 20:54:00,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:54:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2019-12-07 20:54:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-07 20:54:00,191 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:54:00,192 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:54:00,192 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:54:00,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:54:00,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1087805733, now seen corresponding path program 1 times [2019-12-07 20:54:00,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:54:00,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673344656] [2019-12-07 20:54:00,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:54:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:54:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:54:00,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673344656] [2019-12-07 20:54:00,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:54:00,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:54:00,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010366834] [2019-12-07 20:54:00,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:54:00,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:54:00,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:54:00,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:54:00,243 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand 3 states. [2019-12-07 20:54:00,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:54:00,348 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions. [2019-12-07 20:54:00,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:54:00,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-12-07 20:54:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:54:00,351 INFO L225 Difference]: With dead ends: 259 [2019-12-07 20:54:00,351 INFO L226 Difference]: Without dead ends: 141 [2019-12-07 20:54:00,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:54:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-12-07 20:54:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2019-12-07 20:54:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-12-07 20:54:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2019-12-07 20:54:00,361 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 54 [2019-12-07 20:54:00,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:54:00,362 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2019-12-07 20:54:00,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:54:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2019-12-07 20:54:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-12-07 20:54:00,364 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:54:00,364 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:54:00,364 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:54:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:54:00,365 INFO L82 PathProgramCache]: Analyzing trace with hash -278094305, now seen corresponding path program 1 times [2019-12-07 20:54:00,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:54:00,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332735174] [2019-12-07 20:54:00,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:54:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:54:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 20:54:00,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332735174] [2019-12-07 20:54:00,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:54:00,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 20:54:00,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699580446] [2019-12-07 20:54:00,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:54:00,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:54:00,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:54:00,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:54:00,429 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand 4 states. [2019-12-07 20:54:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:54:00,556 INFO L93 Difference]: Finished difference Result 321 states and 474 transitions. [2019-12-07 20:54:00,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:54:00,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2019-12-07 20:54:00,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:54:00,558 INFO L225 Difference]: With dead ends: 321 [2019-12-07 20:54:00,558 INFO L226 Difference]: Without dead ends: 184 [2019-12-07 20:54:00,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:54:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-12-07 20:54:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2019-12-07 20:54:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-12-07 20:54:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2019-12-07 20:54:00,571 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 71 [2019-12-07 20:54:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:54:00,572 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2019-12-07 20:54:00,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:54:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2019-12-07 20:54:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-12-07 20:54:00,575 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:54:00,575 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:54:00,575 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:54:00,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:54:00,575 INFO L82 PathProgramCache]: Analyzing trace with hash -558327081, now seen corresponding path program 1 times [2019-12-07 20:54:00,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:54:00,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516658501] [2019-12-07 20:54:00,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:54:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:54:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-12-07 20:54:00,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516658501] [2019-12-07 20:54:00,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:54:00,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:54:00,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731008532] [2019-12-07 20:54:00,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:54:00,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:54:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:54:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:54:00,634 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand 3 states. [2019-12-07 20:54:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:54:00,735 INFO L93 Difference]: Finished difference Result 385 states and 536 transitions. [2019-12-07 20:54:00,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:54:00,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2019-12-07 20:54:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:54:00,737 INFO L225 Difference]: With dead ends: 385 [2019-12-07 20:54:00,737 INFO L226 Difference]: Without dead ends: 210 [2019-12-07 20:54:00,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:54:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-12-07 20:54:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2019-12-07 20:54:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2019-12-07 20:54:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 266 transitions. [2019-12-07 20:54:00,746 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 266 transitions. Word has length 91 [2019-12-07 20:54:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:54:00,747 INFO L462 AbstractCegarLoop]: Abstraction has 200 states and 266 transitions. [2019-12-07 20:54:00,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:54:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 266 transitions. [2019-12-07 20:54:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-12-07 20:54:00,748 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:54:00,748 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:54:00,748 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:54:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:54:00,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1299262229, now seen corresponding path program 1 times [2019-12-07 20:54:00,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:54:00,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109166343] [2019-12-07 20:54:00,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:54:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:54:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:54:00,839 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:54:00,839 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:54:00,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:54:00 BoogieIcfgContainer [2019-12-07 20:54:00,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:54:00,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:54:00,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:54:00,884 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:54:00,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:53:59" (3/4) ... [2019-12-07 20:54:00,886 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 20:54:00,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7b02674c-25d9-426b-aa54-15ba7cf38eb8/bin/utaipan/witness.graphml [2019-12-07 20:54:00,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:54:00,952 INFO L168 Benchmark]: Toolchain (without parser) took 2033.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -131.0 MB). Peak memory consumption was 42.6 kB. Max. memory is 11.5 GB. [2019-12-07 20:54:00,953 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:54:00,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:54:00,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.59 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. [2019-12-07 20:54:00,953 INFO L168 Benchmark]: Boogie Preprocessor took 24.77 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:54:00,954 INFO L168 Benchmark]: RCFGBuilder took 563.77 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: 87.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:54:00,954 INFO L168 Benchmark]: TraceAbstraction took 1077.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:54:00,954 INFO L168 Benchmark]: Witness Printer took 67.01 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:54:00,955 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -176.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.59 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 24.77 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 563.77 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: 87.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1077.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 67.01 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 611]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] int s ; [L617] int tmp ; [L621] s = 8464 [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L40] int s__session__cipher ; [L41] int buf = __VERIFIER_nondet_int() ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp = __VERIFIER_nondet_long() ; [L45] int cb ; [L46] long num1 ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 ; [L55] int tmp___4 ; [L56] int tmp___5 ; [L57] int tmp___6 ; [L58] int tmp___7 ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 ; [L61] int tmp___10 ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L73] s__state = initial_state [L74] blastFlag = 0 [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L268] s__shutdown = 0 [L269] ret = __VERIFIER_nondet_int() [L270] COND TRUE blastFlag == 0 [L271] blastFlag = 1 [L273] COND FALSE !(ret <= 0) [L276] got_new_session = 1 [L277] s__state = 8496 [L278] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L282] ret = __VERIFIER_nondet_int() [L283] COND TRUE blastFlag == 1 [L284] blastFlag = 2 [L286] COND FALSE !(ret <= 0) [L289] COND TRUE \read(s__hit) [L290] s__state = 8656 [L294] s__init_num = 0 [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND TRUE s__state == 8656 [L488] s__session__cipher = s__s3__tmp__new_cipher [L489] tmp___9 = __VERIFIER_nondet_int() [L490] COND FALSE !(! tmp___9) [L494] ret = __VERIFIER_nondet_int() [L495] COND TRUE blastFlag == 2 [L496] blastFlag = 3 [L498] COND FALSE !(ret <= 0) [L501] s__state = 8672 [L502] s__init_num = 0 [L503] tmp___10 = __VERIFIER_nondet_int() [L504] COND FALSE !(! tmp___10) [L583] COND FALSE !(! s__s3__tmp__reuse_message) [L600] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND FALSE !(s__state == 8528) [L148] COND FALSE !(s__state == 8529) [L151] COND FALSE !(s__state == 8544) [L154] COND FALSE !(s__state == 8545) [L157] COND FALSE !(s__state == 8560) [L160] COND FALSE !(s__state == 8561) [L163] COND FALSE !(s__state == 8448) [L166] COND FALSE !(s__state == 8576) [L169] COND FALSE !(s__state == 8577) [L172] COND FALSE !(s__state == 8592) [L175] COND FALSE !(s__state == 8593) [L178] COND FALSE !(s__state == 8608) [L181] COND FALSE !(s__state == 8609) [L184] COND FALSE !(s__state == 8640) [L187] COND FALSE !(s__state == 8641) [L190] COND FALSE !(s__state == 8656) [L193] COND FALSE !(s__state == 8657) [L196] COND TRUE s__state == 8672 [L511] ret = __VERIFIER_nondet_int() [L512] COND FALSE !(blastFlag == 4) [L515] COND TRUE blastFlag == 3 [L611] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 107 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 642 SDtfs, 79 SDslu, 299 SDs, 0 SdLazy, 449 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=4, 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, 4 MinimizatonAttempts, 21 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 32718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 122/122 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 incorrect! Received shutdown request...