./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 21:49:34,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 21:49:34,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 21:49:34,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 21:49:34,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 21:49:34,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 21:49:34,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 21:49:34,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 21:49:34,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 21:49:34,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 21:49:34,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 21:49:34,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 21:49:34,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 21:49:34,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 21:49:34,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 21:49:34,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 21:49:34,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 21:49:34,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 21:49:34,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 21:49:34,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 21:49:34,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 21:49:34,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 21:49:34,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 21:49:34,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 21:49:34,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 21:49:34,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 21:49:34,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 21:49:34,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 21:49:34,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 21:49:34,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 21:49:34,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 21:49:34,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 21:49:34,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 21:49:34,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 21:49:34,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 21:49:34,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 21:49:34,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 21:49:34,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 21:49:34,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 21:49:34,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 21:49:34,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 21:49:34,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-12-14 21:49:34,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 21:49:34,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 21:49:34,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 21:49:34,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 21:49:34,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 21:49:34,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 21:49:34,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 21:49:34,555 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 21:49:34,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 21:49:34,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 21:49:34,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 21:49:34,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 21:49:34,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 21:49:34,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 21:49:34,556 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 21:49:34,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 21:49:34,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 21:49:34,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 21:49:34,557 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 21:49:34,557 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 21:49:34,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 21:49:34,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 21:49:34,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 21:49:34,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 21:49:34,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 21:49:34,558 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 21:49:34,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 21:49:34,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 21:49:34,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b [2022-12-14 21:49:34,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 21:49:34,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 21:49:34,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 21:49:34,752 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 21:49:34,752 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 21:49:34,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/list-properties/simple-1.i [2022-12-14 21:49:37,406 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 21:49:37,605 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 21:49:37,605 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/sv-benchmarks/c/list-properties/simple-1.i [2022-12-14 21:49:37,615 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/data/618878905/fe8c4409015d4d26b0d395341d9a6a5b/FLAG1036a4275 [2022-12-14 21:49:37,628 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/data/618878905/fe8c4409015d4d26b0d395341d9a6a5b [2022-12-14 21:49:37,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 21:49:37,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 21:49:37,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 21:49:37,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 21:49:37,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 21:49:37,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d802892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37, skipping insertion in model container [2022-12-14 21:49:37,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 21:49:37,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 21:49:37,882 WARN L237 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_b4328ab8-0229-4ca5-8170-d6693ce771fc/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2022-12-14 21:49:37,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 21:49:37,892 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 21:49:37,917 WARN L237 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_b4328ab8-0229-4ca5-8170-d6693ce771fc/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2022-12-14 21:49:37,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 21:49:37,934 INFO L208 MainTranslator]: Completed translation [2022-12-14 21:49:37,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37 WrapperNode [2022-12-14 21:49:37,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 21:49:37,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 21:49:37,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 21:49:37,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 21:49:37,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,968 INFO L138 Inliner]: procedures = 124, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-12-14 21:49:37,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 21:49:37,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 21:49:37,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 21:49:37,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 21:49:37,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,988 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 21:49:37,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 21:49:37,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 21:49:37,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 21:49:37,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:49:37" (1/1) ... [2022-12-14 21:49:37,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 21:49:38,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 21:49:38,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 21:49:38,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 21:49:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-12-14 21:49:38,054 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-12-14 21:49:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 21:49:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 21:49:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 21:49:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 21:49:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 21:49:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 21:49:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 21:49:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 21:49:38,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 21:49:38,142 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 21:49:38,145 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 21:49:38,169 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-12-14 21:49:38,256 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 21:49:38,276 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 21:49:38,276 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 21:49:38,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:49:38 BoogieIcfgContainer [2022-12-14 21:49:38,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 21:49:38,279 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 21:49:38,279 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 21:49:38,286 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 21:49:38,286 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:49:38" (1/1) ... [2022-12-14 21:49:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 21:49:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:49:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 18 states and 23 transitions. [2022-12-14 21:49:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-12-14 21:49:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 21:49:38,334 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:49:38,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:49:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:49:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:49:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:49:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2022-12-14 21:49:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-12-14 21:49:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 21:49:38,479 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:49:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:49:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:49:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:49:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:49:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 23 states and 30 transitions. [2022-12-14 21:49:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-12-14 21:49:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 21:49:38,760 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:49:38,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:49:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 21:49:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 21:49:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 21:49:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 30 states and 45 transitions. [2022-12-14 21:49:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 45 transitions. [2022-12-14 21:49:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 21:49:39,413 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 21:49:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 21:49:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:49:39,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 21:49:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:49:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:49:39,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 21:49:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 21:49:39,539 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2022-12-14 21:49:39,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 09:49:39 ImpRootNode [2022-12-14 21:49:39,558 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 21:49:39,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 21:49:39,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 21:49:39,559 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 21:49:39,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:49:38" (3/4) ... [2022-12-14 21:49:39,561 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 21:49:39,588 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 21:49:39,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 21:49:39,589 INFO L158 Benchmark]: Toolchain (without parser) took 1956.36ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 84.7MB in the beginning and 58.7MB in the end (delta: 26.1MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2022-12-14 21:49:39,589 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 21:49:39,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.07ms. Allocated memory is still 119.5MB. Free memory was 84.3MB in the beginning and 68.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 21:49:39,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.67ms. Allocated memory is still 119.5MB. Free memory was 68.0MB in the beginning and 66.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 21:49:39,590 INFO L158 Benchmark]: Boogie Preprocessor took 22.10ms. Allocated memory is still 119.5MB. Free memory was 66.3MB in the beginning and 64.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 21:49:39,590 INFO L158 Benchmark]: RCFGBuilder took 286.58ms. Allocated memory is still 119.5MB. Free memory was 64.7MB in the beginning and 51.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 21:49:39,591 INFO L158 Benchmark]: CodeCheck took 1279.29ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 60.7MB in the end (delta: -9.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-12-14 21:49:39,591 INFO L158 Benchmark]: Witness Printer took 29.35ms. Allocated memory is still 144.7MB. Free memory was 60.7MB in the beginning and 58.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 21:49:39,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 44 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 549]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={25907:0}] [L534] List t; [L535] List p = a; [L536] a->h = 2 VAL [a={25907:0}, p={25907:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) [L540] COND FALSE !(t == 0) VAL [a={25907:0}, p={25907:0}, t={-1:0}] [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a VAL [a={25907:0}, p={25907:0}, t={-1:0}] [L547] COND TRUE p!=0 [L548] EXPR p->h VAL [a={25907:0}, p={25907:0}, p->h=1, t={-1:0}] [L548] COND TRUE p->h != 2 [L549] reach_error() VAL [a={25907:0}, p={25907:0}, t={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.07ms. Allocated memory is still 119.5MB. Free memory was 84.3MB in the beginning and 68.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.67ms. Allocated memory is still 119.5MB. Free memory was 68.0MB in the beginning and 66.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.10ms. Allocated memory is still 119.5MB. Free memory was 66.3MB in the beginning and 64.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 286.58ms. Allocated memory is still 119.5MB. Free memory was 64.7MB in the beginning and 51.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 1279.29ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 51.7MB in the beginning and 60.7MB in the end (delta: -9.0MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Witness Printer took 29.35ms. Allocated memory is still 144.7MB. Free memory was 60.7MB in the beginning and 58.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-12-14 21:49:39,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4328ab8-0229-4ca5-8170-d6693ce771fc/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE