./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB --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 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c --- 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-dbf71c6-m [2022-10-17 16:44:39,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:44:39,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:44:39,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:44:39,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:44:39,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:44:39,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:44:39,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:44:39,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:44:39,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:44:39,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:44:39,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:44:39,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:44:39,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:44:39,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:44:39,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:44:39,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:44:39,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:44:39,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:44:39,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:44:39,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:44:39,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:44:39,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:44:39,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:44:39,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:44:39,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:44:39,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:44:39,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:44:39,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:44:39,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:44:39,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:44:39,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:44:39,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:44:39,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:44:39,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:44:39,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:44:39,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:44:39,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:44:39,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:44:39,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:44:39,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:44:39,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:44:39,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:44:39,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:44:39,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:44:39,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:44:39,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:44:39,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:44:39,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:44:39,809 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:44:39,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:44:39,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:44:39,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:44:39,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:44:39,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:44:39,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:44:39,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:44:39,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:44:39,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:44:39,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:44:39,813 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:44:39,814 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:44:39,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:44:39,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:44:39,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:44:39,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:44:39,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:44:39,816 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:44:39,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:44:39,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:44:39,817 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_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c [2022-10-17 16:44:40,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:44:40,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:44:40,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:44:40,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:44:40,159 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:44:40,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/list-properties/splice-1.i [2022-10-17 16:44:40,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/data/e2e7984ad/e154e4e53b0c4889be1c633072f8eacb/FLAG813371caf [2022-10-17 16:44:40,902 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:44:40,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/sv-benchmarks/c/list-properties/splice-1.i [2022-10-17 16:44:40,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/data/e2e7984ad/e154e4e53b0c4889be1c633072f8eacb/FLAG813371caf [2022-10-17 16:44:41,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/data/e2e7984ad/e154e4e53b0c4889be1c633072f8eacb [2022-10-17 16:44:41,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:44:41,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:44:41,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:44:41,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:44:41,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:44:41,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8d4c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41, skipping insertion in model container [2022-10-17 16:44:41,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:44:41,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:44:41,712 WARN L230 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_ea776003-3ff6-4f25-b154-303608bec093/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2022-10-17 16:44:41,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:44:41,729 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:44:41,821 WARN L230 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_ea776003-3ff6-4f25-b154-303608bec093/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2022-10-17 16:44:41,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:44:41,860 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:44:41,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41 WrapperNode [2022-10-17 16:44:41,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:44:41,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:44:41,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:44:41,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:44:41,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,929 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 104 [2022-10-17 16:44:41,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:44:41,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:44:41,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:44:41,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:44:41,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:41,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:42,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:44:42,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:44:42,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:44:42,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:44:42,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:41" (1/1) ... [2022-10-17 16:44:42,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:44:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:44:42,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:44:42,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:44:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-10-17 16:44:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-10-17 16:44:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:44:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:44:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 16:44:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:44:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 16:44:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 16:44:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:44:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:44:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:44:42,261 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:44:42,264 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:44:42,312 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-10-17 16:44:42,551 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:44:42,643 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:44:42,643 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 16:44:42,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:44:42 BoogieIcfgContainer [2022-10-17 16:44:42,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:44:42,648 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:44:42,648 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:44:42,667 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:44:42,668 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:44:42" (1/1) ... [2022-10-17 16:44:42,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:44:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2022-10-17 16:44:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2022-10-17 16:44:42,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 16:44:42,807 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:42,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:44:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:43,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 24 states and 31 transitions. [2022-10-17 16:44:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-10-17 16:44:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 16:44:43,131 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:44:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 28 states and 38 transitions. [2022-10-17 16:44:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-10-17 16:44:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 16:44:43,514 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:43,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:44:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 32 states and 44 transitions. [2022-10-17 16:44:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2022-10-17 16:44:43,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 16:44:43,918 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:44:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 34 states and 47 transitions. [2022-10-17 16:44:44,605 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2022-10-17 16:44:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 16:44:44,611 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:44:44,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:44:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:44:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:44:44,931 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:44:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:44:45,032 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2022-10-17 16:44:45,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:44:45 ImpRootNode [2022-10-17 16:44:45,143 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:44:45,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:44:45,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:44:45,145 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:44:45,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:44:42" (3/4) ... [2022-10-17 16:44:45,148 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:44:45,254 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:44:45,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:44:45,256 INFO L158 Benchmark]: Toolchain (without parser) took 4082.22ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 57.6MB in the beginning and 64.2MB in the end (delta: -6.6MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2022-10-17 16:44:45,257 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 100.7MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:44:45,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.34ms. Allocated memory is still 100.7MB. Free memory was 57.4MB in the beginning and 67.1MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 16:44:45,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.30ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:44:45,259 INFO L158 Benchmark]: Boogie Preprocessor took 80.37ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 63.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:44:45,260 INFO L158 Benchmark]: RCFGBuilder took 635.00ms. Allocated memory is still 100.7MB. Free memory was 63.3MB in the beginning and 46.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 16:44:45,261 INFO L158 Benchmark]: CodeCheck took 2495.53ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 46.6MB in the beginning and 66.3MB in the end (delta: -19.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-10-17 16:44:45,261 INFO L158 Benchmark]: Witness Printer took 110.99ms. Allocated memory is still 130.0MB. Free memory was 66.3MB in the beginning and 64.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:44:45,265 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 186 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 94 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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: 584]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={19507:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={19507:0}, flag=1, p={19507:0}] [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) VAL [a={19507:0}, flag=0, p={19507:0}, t={19506:0}] [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h VAL [a={19507:0}, a->h=1, flag=0, p={19506:0}, t={19506:0}] [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a VAL [a={19507:0}, flag=1, l1={0:0}, l2={0:0}, p={19507:0}, t={19506:0}] [L560] EXPR p->h VAL [a={19507:0}, flag=1, l1={0:0}, l2={0:0}, p={19507:0}, p->h=1, t={19506:0}] [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 VAL [a={19507:0}, flag=0, l1={19507:0}, l2={0:0}, p={19506:0}, t={19507:0}] [L560] EXPR p->h VAL [a={19507:0}, flag=0, l1={19507:0}, l2={0:0}, p={19506:0}, p->h=3, t={19507:0}] [L560] COND FALSE !(p->h != 3) [L573] p = l1 VAL [a={19507:0}, flag=0, l1={19507:0}, l2={0:0}, p={19507:0}, t={19507:0}] [L574] COND TRUE p != 0 [L575] EXPR p->h VAL [a={19507:0}, flag=0, l1={19507:0}, l2={0:0}, p={19507:0}, p->h=1, t={19507:0}] [L575] COND TRUE p->h != 2 [L584] reach_error() VAL [a={19507:0}, flag=0, l1={19507:0}, l2={0:0}, p={19507:0}, t={19507:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 100.7MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.34ms. Allocated memory is still 100.7MB. Free memory was 57.4MB in the beginning and 67.1MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.30ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.37ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 63.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.00ms. Allocated memory is still 100.7MB. Free memory was 63.3MB in the beginning and 46.6MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2495.53ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 46.6MB in the beginning and 66.3MB in the end (delta: -19.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Witness Printer took 110.99ms. Allocated memory is still 130.0MB. Free memory was 66.3MB in the beginning and 64.2MB 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! [2022-10-17 16:44:45,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea776003-3ff6-4f25-b154-303608bec093/bin/ukojak-92XMlrwhuB/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