./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak --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 462c34e9f51057faedad8f148a3437a4550c80b7 ................................................................................................................................................................................................................................................ 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 0.2.0-69874e2 [2020-12-01 16:23:49,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:23:49,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:23:49,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:23:49,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:23:49,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:23:49,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:23:49,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:23:49,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:23:49,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:23:49,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:23:49,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:23:49,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:23:49,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:23:49,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:23:49,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:23:49,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:23:49,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:23:49,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:23:50,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:23:50,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:23:50,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:23:50,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:23:50,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:23:50,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:23:50,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:23:50,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:23:50,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:23:50,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:23:50,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:23:50,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:23:50,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:23:50,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:23:50,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:23:50,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:23:50,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:23:50,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:23:50,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:23:50,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:23:50,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:23:50,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:23:50,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 16:23:50,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:23:50,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:23:50,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 16:23:50,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 16:23:50,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:23:50,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:23:50,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:23:50,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:23:50,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:23:50,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:23:50,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:23:50,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:23:50,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:23:50,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:23:50,057 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:23:50,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:23:50,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:23:50,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:23:50,057 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:23:50,058 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:23:50,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:23:50,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:23:50,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:23:50,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:23:50,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:23:50,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:23:50,059 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:23:50,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:23:50,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:23:50,060 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-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 462c34e9f51057faedad8f148a3437a4550c80b7 [2020-12-01 16:23:50,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:23:50,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:23:50,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:23:50,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:23:50,338 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:23:50,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2020-12-01 16:23:50,418 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/data/682244841/1dfbe9f397564ee38b68ad8f9aef3205/FLAG36a3a7a18 [2020-12-01 16:23:50,975 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:23:50,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2020-12-01 16:23:50,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/data/682244841/1dfbe9f397564ee38b68ad8f9aef3205/FLAG36a3a7a18 [2020-12-01 16:23:51,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/data/682244841/1dfbe9f397564ee38b68ad8f9aef3205 [2020-12-01 16:23:51,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:23:51,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:23:51,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:23:51,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:23:51,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:23:51,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e488e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51, skipping insertion in model container [2020-12-01 16:23:51,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:23:51,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:23:51,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:23:51,761 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:23:51,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:23:51,860 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:23:51,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51 WrapperNode [2020-12-01 16:23:51,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:23:51,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:23:51,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:23:51,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:23:51,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:23:51,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:23:51,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:23:51,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:23:51,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... [2020-12-01 16:23:51,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:23:51,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:23:51,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:23:51,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:23:51,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:23:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2020-12-01 16:23:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:23:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:23:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:23:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:23:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:23:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:23:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:23:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:23:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:23:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:23:52,660 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:23:52,661 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 16:23:52,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:23:52 BoogieIcfgContainer [2020-12-01 16:23:52,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:23:52,663 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:23:52,663 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:23:52,674 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:23:52,674 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:23:52" (1/1) ... [2020-12-01 16:23:52,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:23:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:23:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 24 states and 38 transitions. [2020-12-01 16:23:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2020-12-01 16:23:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:23:52,722 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:23:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:23:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:23:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:23:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2020-12-01 16:23:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-12-01 16:23:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 16:23:52,941 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:23:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:23:53,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:23:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:23:53,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:23:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:23:53,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:23:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:23:53,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:23:53,305 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-12-01 16:23:53,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:23:53 ImpRootNode [2020-12-01 16:23:53,349 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:23:53,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:23:53,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:23:53,350 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:23:53,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:23:52" (3/4) ... [2020-12-01 16:23:53,352 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:23:53,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_68c05d9c-76d3-4199-9c28-dab3e59e2f10/bin/ukojak/witness.graphml [2020-12-01 16:23:53,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:23:53,422 INFO L168 Benchmark]: Toolchain (without parser) took 2132.51 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 49.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:23:53,423 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:23:53,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.43 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 66.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:23:53,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.36 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 64.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:23:53,430 INFO L168 Benchmark]: Boogie Preprocessor took 60.86 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 62.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:23:53,430 INFO L168 Benchmark]: RCFGBuilder took 689.78 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 77.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2020-12-01 16:23:53,431 INFO L168 Benchmark]: CodeCheck took 685.74 ms. Allocated memory is still 100.7 MB. Free memory was 77.7 MB in the beginning and 52.0 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:23:53,432 INFO L168 Benchmark]: Witness Printer took 70.60 ms. Allocated memory is still 100.7 MB. Free memory was 52.0 MB in the beginning and 49.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:23:53,434 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 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1000] SLL* head = malloc(sizeof(SLL)); [L1001] head->next = ((void*)0) [L1002] head->prev = ((void*)0) [L1003] head->data = 0 [L1005] SLL* x = head; [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1019] COND TRUE __VERIFIER_nondet_int() [L1020] x = malloc(sizeof(SLL)) [L1021] x->data = 1 [L1022] x->next = head [L1023] x->prev = ((void*)0) [L1024] head = x [L1050] x = head [L1053] EXPR x->data [L1053] COND FALSE !(x->data != 1) [L1059] EXPR x->next [L1059] x = x->next [L1060] COND TRUE \read(*x) [L1062] EXPR x->data [L1062] COND TRUE x->data != 1 [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-simple-white-blue-1.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.43 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 66.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.36 ms. Allocated memory is still 100.7 MB. Free memory was 66.4 MB in the beginning and 64.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.86 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 62.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 689.78 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 77.7 MB in the end (delta: -14.9 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. * CodeCheck took 685.74 ms. Allocated memory is still 100.7 MB. Free memory was 77.7 MB in the beginning and 52.0 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 70.60 ms. Allocated memory is still 100.7 MB. Free memory was 52.0 MB in the beginning and 49.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...