./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8 --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 a71ed7b24cb625c47cfb1b6ba9f6cdbf2879f063 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-4e77c04 [2021-10-13 07:03:35,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:03:35,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:03:35,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:03:35,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:03:35,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:03:35,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:03:35,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:03:35,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:03:35,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:03:35,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:03:35,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:03:35,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:03:35,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:03:35,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:03:35,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:03:35,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:03:35,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:03:35,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:03:35,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:03:35,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:03:35,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:03:35,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:03:35,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:03:35,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:03:35,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:03:35,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:03:35,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:03:35,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:03:35,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:03:35,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:03:35,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:03:35,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:03:35,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:03:35,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:03:35,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:03:35,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:03:35,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:03:35,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:03:35,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:03:35,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:03:35,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:03:35,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:03:35,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:03:35,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:03:35,389 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:03:35,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:03:35,390 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:03:35,390 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:03:35,390 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:03:35,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:03:35,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:03:35,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:03:35,398 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:03:35,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:03:35,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:03:35,399 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:03:35,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:03:35,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:03:35,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:03:35,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:03:35,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:03:35,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:03:35,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:03:35,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:03:35,402 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:03:35,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:03:35,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:03:35,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:03:35,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:03:35,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:03:35,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:03:35,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:35,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:03:35,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:03:35,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:03:35,405 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:03:35,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:03:35,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:03:35,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:03:35,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:03:35,406 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_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a71ed7b24cb625c47cfb1b6ba9f6cdbf2879f063 [2021-10-13 07:03:35,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:03:35,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:03:35,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:03:35,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:03:35,713 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:03:35,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2021-10-13 07:03:35,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/data/bd87111f3/b2ab0faff1724534914982ff1fc5d201/FLAGd6c78fce7 [2021-10-13 07:03:36,319 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:03:36,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2021-10-13 07:03:36,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/data/bd87111f3/b2ab0faff1724534914982ff1fc5d201/FLAGd6c78fce7 [2021-10-13 07:03:36,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/data/bd87111f3/b2ab0faff1724534914982ff1fc5d201 [2021-10-13 07:03:36,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:03:36,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:03:36,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:36,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:03:36,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:03:36,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:36" (1/1) ... [2021-10-13 07:03:36,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f37e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:36, skipping insertion in model container [2021-10-13 07:03:36,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:36" (1/1) ... [2021-10-13 07:03:36,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:03:36,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:03:37,059 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_89bff271-89da-4dfe-8618-1a2da12ace8a/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-10-13 07:03:37,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:37,094 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:03:37,123 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_89bff271-89da-4dfe-8618-1a2da12ace8a/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-10-13 07:03:37,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:03:37,169 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:03:37,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37 WrapperNode [2021-10-13 07:03:37,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:03:37,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:37,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:03:37,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:03:37,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:03:37,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:03:37,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:03:37,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:03:37,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:03:37,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:03:37,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:03:37,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:03:37,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (1/1) ... [2021-10-13 07:03:37,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:03:37,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:03:37,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:03:37,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:03:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:03:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:03:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:03:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:03:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:03:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 07:03:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:03:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:03:37,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:03:38,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:03:38,519 INFO L299 CfgBuilder]: Removed 137 assume(true) statements. [2021-10-13 07:03:38,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:38 BoogieIcfgContainer [2021-10-13 07:03:38,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:03:38,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:03:38,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:03:38,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:03:38,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:03:36" (1/3) ... [2021-10-13 07:03:38,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d40988e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:38, skipping insertion in model container [2021-10-13 07:03:38,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:37" (2/3) ... [2021-10-13 07:03:38,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d40988e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:38, skipping insertion in model container [2021-10-13 07:03:38,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:38" (3/3) ... [2021-10-13 07:03:38,530 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2021-10-13 07:03:38,535 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:03:38,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-13 07:03:38,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:03:38,593 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, mConcurrency=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 [2021-10-13 07:03:38,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-13 07:03:38,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 100 states have (on average 2.01) internal successors, (201), 120 states have internal predecessors, (201), 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) [2021-10-13 07:03:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:03:38,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:38,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:38,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-13 07:03:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:38,624 INFO L82 PathProgramCache]: Analyzing trace with hash -852024659, now seen corresponding path program 1 times [2021-10-13 07:03:38,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:03:38,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514515314] [2021-10-13 07:03:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:38,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:03:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:03:38,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:03:38,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514515314] [2021-10-13 07:03:38,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514515314] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:38,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:38,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:03:38,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025473821] [2021-10-13 07:03:38,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:03:38,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:03:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:03:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:03:38,816 INFO L87 Difference]: Start difference. First operand has 121 states, 100 states have (on average 2.01) internal successors, (201), 120 states have internal predecessors, (201), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-10-13 07:03:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:38,845 INFO L93 Difference]: Finished difference Result 239 states and 397 transitions. [2021-10-13 07:03:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:03:38,847 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-10-13 07:03:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:38,856 INFO L225 Difference]: With dead ends: 239 [2021-10-13 07:03:38,857 INFO L226 Difference]: Without dead ends: 119 [2021-10-13 07:03:38,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:03:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-13 07:03:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-10-13 07:03:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 118 states have internal predecessors, (130), 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) [2021-10-13 07:03:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2021-10-13 07:03:38,910 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 10 [2021-10-13 07:03:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:38,911 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2021-10-13 07:03:38,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-10-13 07:03:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2021-10-13 07:03:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:03:38,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:38,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:38,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:03:38,913 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-13 07:03:38,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:38,914 INFO L82 PathProgramCache]: Analyzing trace with hash 119174088, now seen corresponding path program 1 times [2021-10-13 07:03:38,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:03:38,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427606571] [2021-10-13 07:03:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:38,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:03:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:03:39,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:03:39,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427606571] [2021-10-13 07:03:39,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427606571] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:39,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:39,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:03:39,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165092624] [2021-10-13 07:03:39,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:03:39,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:03:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:03:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:03:39,432 INFO L87 Difference]: Start difference. First operand 119 states and 130 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) [2021-10-13 07:03:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:39,859 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2021-10-13 07:03:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:03:39,859 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 [2021-10-13 07:03:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:39,868 INFO L225 Difference]: With dead ends: 202 [2021-10-13 07:03:39,868 INFO L226 Difference]: Without dead ends: 198 [2021-10-13 07:03:39,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:03:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-13 07:03:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 121. [2021-10-13 07:03:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.303921568627451) internal successors, (133), 120 states have internal predecessors, (133), 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) [2021-10-13 07:03:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2021-10-13 07:03:39,897 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 13 [2021-10-13 07:03:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:39,898 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2021-10-13 07:03:39,898 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) [2021-10-13 07:03:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2021-10-13 07:03:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:03:39,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:39,900 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:39,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:03:39,904 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-13 07:03:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:39,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1437628308, now seen corresponding path program 1 times [2021-10-13 07:03:39,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:03:39,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813063835] [2021-10-13 07:03:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:39,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:03:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:03:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:03:40,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:03:40,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813063835] [2021-10-13 07:03:40,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813063835] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:03:40,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:03:40,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:03:40,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387055792] [2021-10-13 07:03:40,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:03:40,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:03:40,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:03:40,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:03:40,153 INFO L87 Difference]: Start difference. First operand 121 states and 133 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-13 07:03:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:03:40,488 INFO L93 Difference]: Finished difference Result 215 states and 235 transitions. [2021-10-13 07:03:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:03:40,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 [2021-10-13 07:03:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:03:40,491 INFO L225 Difference]: With dead ends: 215 [2021-10-13 07:03:40,491 INFO L226 Difference]: Without dead ends: 211 [2021-10-13 07:03:40,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:03:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-13 07:03:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 121. [2021-10-13 07:03:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 120 states have internal predecessors, (133), 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) [2021-10-13 07:03:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2021-10-13 07:03:40,502 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 15 [2021-10-13 07:03:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:03:40,502 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2021-10-13 07:03:40,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-13 07:03:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2021-10-13 07:03:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:03:40,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:03:40,504 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:03:40,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:03:40,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-10-13 07:03:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:03:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2015916664, now seen corresponding path program 1 times [2021-10-13 07:03:40,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:03:40,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189231154] [2021-10-13 07:03:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:03:40,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:03:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:03:40,587 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:03:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:03:40,740 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:03:40,740 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:03:40,741 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,743 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,744 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,748 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,749 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,751 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,753 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:40,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:03:40,761 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:03:40,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:03:40 BoogieIcfgContainer [2021-10-13 07:03:40,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:03:40,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:03:40,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:03:40,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:03:40,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:38" (3/4) ... [2021-10-13 07:03:40,828 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:03:40,895 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:03:40,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:03:40,899 INFO L168 Benchmark]: Toolchain (without parser) took 4265.53 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 74.0 MB in the beginning and 65.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:40,900 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 91.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:03:40,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.66 ms. Allocated memory is still 111.1 MB. Free memory was 73.8 MB in the beginning and 80.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:40,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.21 ms. Allocated memory is still 111.1 MB. Free memory was 80.7 MB in the beginning and 77.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:40,901 INFO L168 Benchmark]: Boogie Preprocessor took 53.51 ms. Allocated memory is still 111.1 MB. Free memory was 77.6 MB in the beginning and 74.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:40,902 INFO L168 Benchmark]: RCFGBuilder took 1211.60 ms. Allocated memory is still 111.1 MB. Free memory was 74.4 MB in the beginning and 71.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:40,902 INFO L168 Benchmark]: TraceAbstraction took 2301.08 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 71.1 MB in the beginning and 68.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:40,903 INFO L168 Benchmark]: Witness Printer took 70.08 ms. Allocated memory is still 140.5 MB. Free memory was 68.3 MB in the beginning and 65.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:40,906 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 91.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.66 ms. Allocated memory is still 111.1 MB. Free memory was 73.8 MB in the beginning and 80.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.21 ms. Allocated memory is still 111.1 MB. Free memory was 80.7 MB in the beginning and 77.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.51 ms. Allocated memory is still 111.1 MB. Free memory was 77.6 MB in the beginning and 74.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1211.60 ms. Allocated memory is still 111.1 MB. Free memory was 74.4 MB in the beginning and 71.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2301.08 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 71.1 MB in the beginning and 68.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. * Witness Printer took 70.08 ms. Allocated memory is still 140.5 MB. Free memory was 68.3 MB in the beginning and 65.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L639] const struct node *p1, *p2; [L588] struct node *list = ((void *)0); [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] struct node *list = create_sll(&p1, &p2); [L642] \read(*p1) [L642] \read(*p2) [L626] COND FALSE !(!(beg)) [L627] COND FALSE !(!(end)) [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg [L629] COND TRUE !(beg) [L565] reach_error() - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 121 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 2175.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 12.2ms, AutomataDifference: 842.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 320 SDtfs, 343 SDslu, 827 SDs, 0 SdLazy, 367 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 473.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 225.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 167 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.8ms SsaConstructionTime, 285.5ms SatisfiabilityAnalysisTime, 567.6ms InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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! [2021-10-13 07:03:40,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89bff271-89da-4dfe-8618-1a2da12ace8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...