./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI --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 c783d9214012f4bff6327cd9f7b291047ddaff08 ......................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 02:21:52,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:52,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:52,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:52,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:52,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:52,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:52,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:52,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:52,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:52,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:52,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:52,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:52,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:52,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:52,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:52,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:52,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:52,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:52,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:52,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:52,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:52,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:52,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:52,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:52,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:52,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:52,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:52,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:52,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:52,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:52,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:52,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:52,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:52,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:52,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:52,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:52,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:52,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:52,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:52,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:52,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:52,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:52,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:52,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:52,424 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:52,424 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:52,424 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:52,425 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:52,425 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:52,425 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:52,425 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:52,426 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:52,426 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:52,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:52,426 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:52,427 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:52,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:52,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:52,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:52,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:52,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:52,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:52,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:52,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:52,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:52,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:52,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:52,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:52,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:52,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:52,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:52,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:52,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:52,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:52,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:52,432 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:52,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:52,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:52,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:52,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:52,433 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_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c783d9214012f4bff6327cd9f7b291047ddaff08 [2021-10-11 02:21:52,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:52,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:52,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:52,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:52,744 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:52,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-10-11 02:21:52,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/data/6dc979a14/850d828d19d1495595ad7194e9908363/FLAGf97813741 [2021-10-11 02:21:53,388 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:53,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2021-10-11 02:21:53,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/data/6dc979a14/850d828d19d1495595ad7194e9908363/FLAGf97813741 [2021-10-11 02:21:53,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/data/6dc979a14/850d828d19d1495595ad7194e9908363 [2021-10-11 02:21:53,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:53,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:53,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:53,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:53,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:53,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:53" (1/1) ... [2021-10-11 02:21:53,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b06291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:53, skipping insertion in model container [2021-10-11 02:21:53,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:53" (1/1) ... [2021-10-11 02:21:53,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:53,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:54,104 WARN L226 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_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2021-10-11 02:21:54,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:54,132 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:54,192 WARN L226 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_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2021-10-11 02:21:54,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:54,244 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:54,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54 WrapperNode [2021-10-11 02:21:54,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:54,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:54,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:54,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:54,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:54,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:54,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:54,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:54,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... [2021-10-11 02:21:54,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:54,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:54,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:54,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:54,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:21:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:21:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:21:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:21:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:21:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:21:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:54,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:54,987 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:21:54,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:54 BoogieIcfgContainer [2021-10-11 02:21:54,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:55,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:55,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:55,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:55,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:53" (1/3) ... [2021-10-11 02:21:55,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375608c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:55, skipping insertion in model container [2021-10-11 02:21:55,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:54" (2/3) ... [2021-10-11 02:21:55,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375608c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:55, skipping insertion in model container [2021-10-11 02:21:55,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:54" (3/3) ... [2021-10-11 02:21:55,016 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2021-10-11 02:21:55,033 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:55,037 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:55,063 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:55,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:55,091 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:55,091 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:55,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:55,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:55,092 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:55,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:55,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-10-11 02:21:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:21:55,114 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:55,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:55,115 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:55,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:55,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1578730623, now seen corresponding path program 1 times [2021-10-11 02:21:55,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:55,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498184207] [2021-10-11 02:21:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:55,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498184207] [2021-10-11 02:21:55,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:55,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:55,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264945995] [2021-10-11 02:21:55,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:55,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:55,325 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-10-11 02:21:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:55,344 INFO L93 Difference]: Finished difference Result 38 states and 59 transitions. [2021-10-11 02:21:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:55,345 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:21:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:55,355 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:21:55,355 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:21:55,359 INFO L677 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 [2021-10-11 02:21:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:21:55,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:21:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:21:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-10-11 02:21:55,400 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2021-10-11 02:21:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:55,401 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-10-11 02:21:55,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-10-11 02:21:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:21:55,402 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:55,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:55,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:55,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:55,407 INFO L82 PathProgramCache]: Analyzing trace with hash -725012791, now seen corresponding path program 1 times [2021-10-11 02:21:55,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:55,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650522619] [2021-10-11 02:21:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:55,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:55,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:55,626 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:55,626 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:55,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:55,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:55 BoogieIcfgContainer [2021-10-11 02:21:55,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:55,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:55,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:55,670 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:55,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:54" (3/4) ... [2021-10-11 02:21:55,673 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:21:55,714 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2b99f2f-a0e7-4654-bd9b-61bdcc43d48d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:55,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:55,717 INFO L168 Benchmark]: Toolchain (without parser) took 2036.11 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 61.8 MB in the beginning and 76.8 MB in the end (delta: -15.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:55,718 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:55,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 558.41 ms. Allocated memory is still 104.9 MB. Free memory was 61.5 MB in the beginning and 67.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:55,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 104.9 MB. Free memory was 67.0 MB in the beginning and 64.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:55,720 INFO L168 Benchmark]: Boogie Preprocessor took 40.36 ms. Allocated memory is still 104.9 MB. Free memory was 64.9 MB in the beginning and 63.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:55,721 INFO L168 Benchmark]: RCFGBuilder took 654.52 ms. Allocated memory is still 104.9 MB. Free memory was 63.2 MB in the beginning and 36.4 MB in the end (delta: 26.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:55,722 INFO L168 Benchmark]: TraceAbstraction took 662.37 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 78.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:55,723 INFO L168 Benchmark]: Witness Printer took 44.78 ms. Allocated memory is still 125.8 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:55,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 558.41 ms. Allocated memory is still 104.9 MB. Free memory was 61.5 MB in the beginning and 67.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.33 ms. Allocated memory is still 104.9 MB. Free memory was 67.0 MB in the beginning and 64.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.36 ms. Allocated memory is still 104.9 MB. Free memory was 64.9 MB in the beginning and 63.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 654.52 ms. Allocated memory is still 104.9 MB. Free memory was 63.2 MB in the beginning and 36.4 MB in the end (delta: 26.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 662.37 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 78.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * Witness Printer took 44.78 ms. Allocated memory is still 125.8 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1053]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L999] SLL* head = malloc(sizeof(SLL)); [L1000] head->next = ((void*)0) [L1001] head->data = 0 [L1003] SLL* x = head; [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND TRUE __VERIFIER_nondet_int() [L1017] x = malloc(sizeof(SLL)) [L1018] x->data = 1 [L1019] x->next = head [L1020] head = x [L1040] x = head [L1043] EXPR x->data [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next [L1049] x = x->next [L1050] COND TRUE \read(*x) [L1052] EXPR x->data [L1052] COND TRUE x->data != 1 [L1053] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! Received shutdown request...