./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a10fd260c2f708e346588150444ddfe9656de05 .................................................................................................................................................................................................................................................. 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 0.1.24-cad4683 [2019-10-22 10:13:58,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:13:58,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:13:58,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:13:58,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:13:58,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:13:58,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:13:58,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:13:58,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:13:58,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:13:58,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:13:58,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:13:58,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:13:58,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:13:58,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:13:58,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:13:58,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:13:58,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:13:58,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:13:58,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:13:58,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:13:58,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:13:58,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:13:58,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:13:58,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:13:58,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:13:58,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:13:58,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:13:58,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:13:58,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:13:58,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:13:58,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:13:58,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:13:58,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:13:58,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:13:58,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:13:58,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:13:58,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:13:58,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:13:58,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:13:58,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:13:58,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-10-22 10:13:58,998 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:13:58,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:13:58,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 10:13:58,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-10-22 10:13:59,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:13:59,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:13:59,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:13:59,000 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:13:59,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:13:59,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:13:59,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:13:59,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 10:13:59,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:13:59,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 10:13:59,002 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:13:59,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 10:13:59,002 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:13:59,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 10:13:59,002 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:13:59,002 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:13:59,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:13:59,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:13:59,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:13:59,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:13:59,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:13:59,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 10:13:59,004 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:13:59,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:13:59,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 10:13:59,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_fb864b79-b175-4959-b756-2c696005e472/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(__VERIFIER_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 -> 6a10fd260c2f708e346588150444ddfe9656de05 [2019-10-22 10:13:59,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:13:59,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:13:59,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:13:59,047 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:13:59,047 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:13:59,048 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2019-10-22 10:13:59,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/data/b99a4dba5/85ed480ba53847cc86e2900c90d8c1d6/FLAG0d73f5724 [2019-10-22 10:13:59,574 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:13:59,574 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2019-10-22 10:13:59,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/data/b99a4dba5/85ed480ba53847cc86e2900c90d8c1d6/FLAG0d73f5724 [2019-10-22 10:14:00,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/data/b99a4dba5/85ed480ba53847cc86e2900c90d8c1d6 [2019-10-22 10:14:00,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:14:00,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:14:00,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:14:00,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:14:00,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:14:00,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30031fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00, skipping insertion in model container [2019-10-22 10:14:00,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,093 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:14:00,128 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:14:00,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:14:00,545 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:14:00,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:14:00,649 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:14:00,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00 WrapperNode [2019-10-22 10:14:00,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:14:00,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:14:00,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:14:00,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:14:00,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:14:00,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:14:00,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:14:00,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:14:00,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... [2019-10-22 10:14:00,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:14:00,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:14:00,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:14:00,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:14:00,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:14:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/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 [2019-10-22 10:14:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-22 10:14:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-22 10:14:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 10:14:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 10:14:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 10:14:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 10:14:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 10:14:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 10:14:00,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:14:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:14:01,087 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-22 10:14:01,601 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:14:01,602 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-10-22 10:14:01,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:14:01 BoogieIcfgContainer [2019-10-22 10:14:01,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:14:01,604 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:14:01,604 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:14:01,615 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:14:01,615 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:14:01" (1/1) ... [2019-10-22 10:14:01,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:14:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:14:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 30 states and 43 transitions. [2019-10-22 10:14:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2019-10-22 10:14:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 10:14:01,674 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:14:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:14:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:14:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:14:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 41 transitions. [2019-10-22 10:14:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2019-10-22 10:14:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:14:01,820 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:14:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:14:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:14:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:14:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 35 states and 50 transitions. [2019-10-22 10:14:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-10-22 10:14:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 10:14:02,091 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:14:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:14:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:14:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:14:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 42 states and 65 transitions. [2019-10-22 10:14:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2019-10-22 10:14:02,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 10:14:02,963 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:14:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:14:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:14:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:14:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:14:03,160 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2019-10-22 10:14:03,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:14:03 ImpRootNode [2019-10-22 10:14:03,187 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:14:03,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:14:03,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:14:03,188 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:14:03,188 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:14:01" (3/4) ... [2019-10-22 10:14:03,194 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:14:03,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fb864b79-b175-4959-b756-2c696005e472/bin/ukojak/witness.graphml [2019-10-22 10:14:03,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:14:03,263 INFO L168 Benchmark]: Toolchain (without parser) took 3182.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 939.1 MB in the beginning and 914.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 157.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:14:03,263 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:14:03,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-10-22 10:14:03,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 10:14:03,267 INFO L168 Benchmark]: Boogie Preprocessor took 40.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:14:03,267 INFO L168 Benchmark]: RCFGBuilder took 846.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-10-22 10:14:03,268 INFO L168 Benchmark]: CodeCheck took 1583.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 919.4 MB in the end (delta: 129.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 11.5 GB. [2019-10-22 10:14:03,268 INFO L168 Benchmark]: Witness Printer took 70.27 ms. Allocated memory is still 1.2 GB. Free memory was 919.4 MB in the beginning and 914.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 10:14:03,275 INFO L335 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, 31 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 36 SDslu, 32 SDs, 0 SdLazy, 170 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1542 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: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L585] List a = (List) malloc(sizeof(struct node)); [L586] COND FALSE !(a == 0) [L587] List t; [L588] List p = a; [L589] a->h = 2 [L590] COND TRUE __VERIFIER_nondet_int() [L591] p->h = 1 [L592] t = (List) malloc(sizeof(struct node)) [L593] COND FALSE !(t == 0) [L594] p->n = t [L595] EXPR p->n [L595] p = p->n [L590] COND FALSE !(__VERIFIER_nondet_int()) [L597] p->h = 2 [L598] p->n = 0 [L599] p = a [L600] COND TRUE p!=0 [L601] EXPR p->h [L601] COND TRUE p->h != 2 [L602] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 573.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 846.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * CodeCheck took 1583.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 919.4 MB in the end (delta: 129.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 11.5 GB. * Witness Printer took 70.27 ms. Allocated memory is still 1.2 GB. Free memory was 919.4 MB in the beginning and 914.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...