./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a65335ed794a80f1ca394ca36923b36cd04a5678d21ae98cca1d59ae759f86b2 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-b2eff8b [2021-10-29 05:19:31,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:19:31,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:19:31,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:19:31,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:19:31,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:19:31,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:19:31,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:19:31,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:19:31,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:19:31,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:19:31,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:19:31,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:19:31,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:19:31,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:19:31,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:19:31,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:19:31,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:19:31,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:19:31,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:19:31,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:19:31,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:19:31,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:19:31,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:19:31,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:19:31,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:19:31,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:19:31,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:19:31,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:19:31,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:19:31,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:19:31,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:19:31,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:19:31,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:19:31,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:19:31,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:19:31,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:19:31,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:19:31,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:19:31,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:19:31,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:19:31,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:19:31,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:19:31,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:19:31,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:19:31,434 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:19:31,434 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:19:31,434 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:19:31,435 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:19:31,435 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:19:31,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:19:31,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:19:31,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:19:31,444 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:19:31,444 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:19:31,444 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:19:31,445 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:19:31,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:19:31,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:19:31,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:19:31,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:19:31,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:19:31,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:19:31,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:19:31,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:19:31,448 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:19:31,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:19:31,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:19:31,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:19:31,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:19:31,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:19:31,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:19:31,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:19:31,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:19:31,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:19:31,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:19:31,454 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:19:31,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:19:31,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:19:31,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:19:31,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:19:31,455 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a65335ed794a80f1ca394ca36923b36cd04a5678d21ae98cca1d59ae759f86b2 [2021-10-29 05:19:31,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:19:31,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:19:31,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:19:31,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:19:31,796 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:19:31,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-29 05:19:31,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/data/dc69fa279/95367db46692415f9fa7f696af59bce4/FLAG90dd1ba87 [2021-10-29 05:19:32,529 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:19:32,530 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-29 05:19:32,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/data/dc69fa279/95367db46692415f9fa7f696af59bce4/FLAG90dd1ba87 [2021-10-29 05:19:32,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/data/dc69fa279/95367db46692415f9fa7f696af59bce4 [2021-10-29 05:19:32,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:19:32,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:19:32,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:19:32,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:19:32,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:19:32,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:32" (1/1) ... [2021-10-29 05:19:32,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a817cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:32, skipping insertion in model container [2021-10-29 05:19:32,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:32" (1/1) ... [2021-10-29 05:19:32,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:19:32,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:19:33,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-10-29 05:19:33,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:19:33,137 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:19:33,151 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-10-29 05:19:33,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:19:33,188 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:19:33,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33 WrapperNode [2021-10-29 05:19:33,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:19:33,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:19:33,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:19:33,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:19:33,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:19:33,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:19:33,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:19:33,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:19:33,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:19:33,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:19:33,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:19:33,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:19:33,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (1/1) ... [2021-10-29 05:19:33,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:19:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:19:33,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:19:33,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:19:33,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:19:33,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:19:33,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:19:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:19:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-29 05:19:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:19:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:19:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:19:33,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:19:33,858 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-29 05:19:33,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:33 BoogieIcfgContainer [2021-10-29 05:19:33,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:19:33,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:19:33,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:19:33,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:19:33,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:19:32" (1/3) ... [2021-10-29 05:19:33,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d163b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:33, skipping insertion in model container [2021-10-29 05:19:33,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:33" (2/3) ... [2021-10-29 05:19:33,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d163b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:33, skipping insertion in model container [2021-10-29 05:19:33,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:33" (3/3) ... [2021-10-29 05:19:33,871 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-10-29 05:19:33,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:19:33,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:19:33,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:19:33,954 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:19:33,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:19:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:19:33,991 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:19:33,992 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:19:33,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:19:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:19:34,005 INFO L85 PathProgramCache]: Analyzing trace with hash -211002652, now seen corresponding path program 1 times [2021-10-29 05:19:34,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:19:34,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303957320] [2021-10-29 05:19:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:19:34,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:19:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:19:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:34,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:19:34,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303957320] [2021-10-29 05:19:34,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303957320] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:19:34,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:19:34,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:19:34,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393257780] [2021-10-29 05:19:34,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:19:34,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:19:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:19:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:19:34,290 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:19:34,309 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2021-10-29 05:19:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:19:34,311 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:19:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:19:34,320 INFO L225 Difference]: With dead ends: 38 [2021-10-29 05:19:34,321 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 05:19:34,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:19:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 05:19:34,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-29 05:19:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-10-29 05:19:34,360 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2021-10-29 05:19:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:19:34,361 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-10-29 05:19:34,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-10-29 05:19:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:19:34,363 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:19:34,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:19:34,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:19:34,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:19:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:19:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1792796919, now seen corresponding path program 1 times [2021-10-29 05:19:34,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:19:34,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408237906] [2021-10-29 05:19:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:19:34,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:19:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:19:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:34,760 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:19:34,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408237906] [2021-10-29 05:19:34,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408237906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:19:34,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:19:34,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:19:34,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389772162] [2021-10-29 05:19:34,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:19:34,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:19:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:19:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:19:34,768 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:19:34,983 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2021-10-29 05:19:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:19:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:19:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:19:34,985 INFO L225 Difference]: With dead ends: 55 [2021-10-29 05:19:34,986 INFO L226 Difference]: Without dead ends: 35 [2021-10-29 05:19:34,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:19:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-29 05:19:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2021-10-29 05:19:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-29 05:19:35,013 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2021-10-29 05:19:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:19:35,014 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-29 05:19:35,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-29 05:19:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:19:35,015 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:19:35,031 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:19:35,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:19:35,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:19:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:19:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 783629684, now seen corresponding path program 1 times [2021-10-29 05:19:35,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:19:35,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648088064] [2021-10-29 05:19:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:19:35,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:19:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:19:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:35,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:19:35,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648088064] [2021-10-29 05:19:35,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648088064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:19:35,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108457534] [2021-10-29 05:19:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:19:35,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:19:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:19:35,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:19:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:19:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:19:35,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:19:35,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:19:35,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-10-29 05:19:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:35,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:19:36,328 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:36,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 59 [2021-10-29 05:19:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:36,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108457534] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:19:36,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:19:36,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [7] total 16 [2021-10-29 05:19:36,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201071300] [2021-10-29 05:19:36,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 05:19:36,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:19:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 05:19:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:19:36,553 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:19:36,813 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2021-10-29 05:19:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:19:36,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:19:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:19:36,815 INFO L225 Difference]: With dead ends: 88 [2021-10-29 05:19:36,815 INFO L226 Difference]: Without dead ends: 54 [2021-10-29 05:19:36,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-10-29 05:19:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-29 05:19:36,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 25. [2021-10-29 05:19:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-29 05:19:36,830 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2021-10-29 05:19:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:19:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-29 05:19:36,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:36,831 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-29 05:19:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:19:36,833 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:19:36,834 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:19:36,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:19:37,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:19:37,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:19:37,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:19:37,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1186046424, now seen corresponding path program 1 times [2021-10-29 05:19:37,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:19:37,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768078775] [2021-10-29 05:19:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:19:37,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:19:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:19:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:37,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:19:37,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768078775] [2021-10-29 05:19:37,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768078775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:19:37,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399301143] [2021-10-29 05:19:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:19:37,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:19:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:19:37,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:19:37,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:19:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:19:37,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:19:37,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:19:37,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-10-29 05:19:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:37,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:19:37,983 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-29 05:19:37,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 54 [2021-10-29 05:19:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:38,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399301143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:19:38,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26602554] [2021-10-29 05:19:38,128 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-29 05:19:38,128 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:19:38,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:19:38,144 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:19:38,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:19:38,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,195 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:19:38,198 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:19:38,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-29 05:19:38,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-29 05:19:38,232 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_30|]} [2021-10-29 05:19:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-29 05:19:38,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:19:38,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:19:38,265 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:19:38,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,301 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,380 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-29 05:19:38,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-10-29 05:19:38,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:19:38,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:19:38,400 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:19:38,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:19:38,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-10-29 05:19:38,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:19:38,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:19:38,452 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:19:38,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-29 05:19:38,484 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:19:38,485 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:183, output treesize:145 [2021-10-29 05:19:38,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-10-29 05:19:38,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 05:19:38,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-29 05:19:38,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-10-29 05:19:38,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,699 INFO L180 QuantifierPusher]: treesize reduction 50, result has 60.0 percent of original size [2021-10-29 05:19:38,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-10-29 05:19:38,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 05:19:38,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-29 05:19:38,722 INFO L180 QuantifierPusher]: treesize reduction 50, result has 60.0 percent of original size [2021-10-29 05:19:38,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-10-29 05:19:38,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 05:19:38,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:38,803 INFO L180 QuantifierPusher]: treesize reduction 50, result has 71.8 percent of original size [2021-10-29 05:19:38,804 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-29 05:19:38,810 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:19:38,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:19:38,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 05:19:38,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-29 05:19:38,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,847 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,850 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-29 05:19:38,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:19:38,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-29 05:19:38,866 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-29 05:19:38,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-29 05:19:38,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-10-29 05:19:38,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,897 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 05:19:38,902 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-29 05:19:38,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,922 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-29 05:19:38,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-29 05:19:38,928 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:19:38,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:19:38,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:19:38,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 05:19:38,943 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:19:41,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:19:41,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:19:41,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-10-29 05:19:41,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412410331] [2021-10-29 05:19:41,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-29 05:19:41,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:19:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-29 05:19:41,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-10-29 05:19:41,341 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:19:42,013 INFO L93 Difference]: Finished difference Result 133 states and 163 transitions. [2021-10-29 05:19:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-29 05:19:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 05:19:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:19:42,017 INFO L225 Difference]: With dead ends: 133 [2021-10-29 05:19:42,017 INFO L226 Difference]: Without dead ends: 131 [2021-10-29 05:19:42,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=348, Invalid=2004, Unknown=0, NotChecked=0, Total=2352 [2021-10-29 05:19:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-29 05:19:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 41. [2021-10-29 05:19:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-29 05:19:42,030 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 17 [2021-10-29 05:19:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:19:42,031 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-29 05:19:42,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-29 05:19:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:19:42,032 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:19:42,032 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:19:42,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:19:42,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:19:42,247 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:19:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:19:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash 231681319, now seen corresponding path program 2 times [2021-10-29 05:19:42,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:19:42,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056268746] [2021-10-29 05:19:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:19:42,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:19:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:19:42,293 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:19:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:19:42,337 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:19:42,337 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:19:42,338 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:19:42,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-29 05:19:42,344 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-10-29 05:19:42,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:19:42,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:19:42 BoogieIcfgContainer [2021-10-29 05:19:42,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:19:42,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:19:42,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:19:42,388 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:19:42,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:33" (3/4) ... [2021-10-29 05:19:42,391 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:19:42,455 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:19:42,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:19:42,456 INFO L168 Benchmark]: Toolchain (without parser) took 9578.35 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 63.3 MB in the beginning and 69.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:42,457 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:19:42,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.81 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 63.1 MB in the beginning and 108.0 MB in the end (delta: -44.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:42,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 134.2 MB. Free memory was 108.0 MB in the beginning and 106.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:42,462 INFO L168 Benchmark]: Boogie Preprocessor took 31.50 ms. Allocated memory is still 134.2 MB. Free memory was 106.0 MB in the beginning and 104.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:42,462 INFO L168 Benchmark]: RCFGBuilder took 589.42 ms. Allocated memory is still 134.2 MB. Free memory was 104.6 MB in the beginning and 85.0 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:42,465 INFO L168 Benchmark]: TraceAbstraction took 8524.25 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 84.4 MB in the beginning and 72.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:42,466 INFO L168 Benchmark]: Witness Printer took 67.63 ms. Allocated memory is still 161.5 MB. Free memory was 72.6 MB in the beginning and 69.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:42,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.81 ms. Allocated memory was 98.6 MB in the beginning and 134.2 MB in the end (delta: 35.7 MB). Free memory was 63.1 MB in the beginning and 108.0 MB in the end (delta: -44.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.97 ms. Allocated memory is still 134.2 MB. Free memory was 108.0 MB in the beginning and 106.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.50 ms. Allocated memory is still 134.2 MB. Free memory was 106.0 MB in the beginning and 104.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 589.42 ms. Allocated memory is still 134.2 MB. Free memory was 104.6 MB in the beginning and 85.0 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8524.25 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 84.4 MB in the beginning and 72.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. * Witness Printer took 67.63 ms. Allocated memory is still 161.5 MB. Free memory was 72.6 MB in the beginning and 69.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j [L41] return strncpy(dest,src,n); [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 303 SDslu, 268 SDs, 0 SdLazy, 491 SolverSat, 169 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 133 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 977 SizeOfPredicates, 27 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 4/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:19:42,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891d222f-86be-4b20-9e51-06c5ef863be8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...