./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/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 857285933727e0d6539ccc24abeb7a5fe95b45c6 .......................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-30 00:16:36,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:16:36,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:16:36,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:16:36,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:16:36,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:16:36,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:16:36,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:16:36,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:16:36,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:16:36,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:16:36,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:16:36,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:16:36,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:16:36,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:16:36,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:16:36,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:16:36,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:16:36,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:16:36,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:16:36,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:16:36,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:16:36,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:16:36,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:16:36,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:16:36,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:16:36,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:16:36,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:16:36,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:16:36,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:16:36,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:16:36,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:16:36,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:16:36,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:16:36,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:16:36,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:16:36,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:16:36,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:16:36,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:16:36,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:16:36,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:16:36,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-30 00:16:36,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:16:36,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:16:36,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 00:16:36,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-30 00:16:36,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:16:36,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:16:36,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:16:36,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:16:36,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:16:36,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:16:36,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:16:36,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:16:36,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:16:36,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:16:36,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:16:36,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:16:36,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:16:36,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:16:36,777 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-30 00:16:36,777 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-30 00:16:36,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:16:36,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:16:36,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-30 00:16:36,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:16:36,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:16:36,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:16:36,779 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-30 00:16:36,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:16:36,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:16:36,781 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_8fb169a2-6218-44cc-bf6a-af6af701f079/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 857285933727e0d6539ccc24abeb7a5fe95b45c6 [2020-11-30 00:16:37,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:16:37,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:16:37,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:16:37,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:16:37,083 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:16:37,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/../../sv-benchmarks/c/list-properties/list-2.i [2020-11-30 00:16:37,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/data/bcb4f3137/6674fb113b19403d92becb81417f3a8e/FLAG13ae516ae [2020-11-30 00:16:37,825 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:16:37,825 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/sv-benchmarks/c/list-properties/list-2.i [2020-11-30 00:16:37,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/data/bcb4f3137/6674fb113b19403d92becb81417f3a8e/FLAG13ae516ae [2020-11-30 00:16:38,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/data/bcb4f3137/6674fb113b19403d92becb81417f3a8e [2020-11-30 00:16:38,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:16:38,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:16:38,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:16:38,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:16:38,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:16:38,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccae8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38, skipping insertion in model container [2020-11-30 00:16:38,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:16:38,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:16:38,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:16:38,549 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:16:38,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:16:38,670 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:16:38,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38 WrapperNode [2020-11-30 00:16:38,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:16:38,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:16:38,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:16:38,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:16:38,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:16:38,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:16:38,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:16:38,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:16:38,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... [2020-11-30 00:16:38,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:16:38,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:16:38,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:16:38,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:16:38,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/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 [2020-11-30 00:16:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-30 00:16:38,863 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-30 00:16:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:16:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:16:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:16:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 00:16:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:16:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 00:16:38,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:16:38,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:16:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:16:39,154 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-30 00:16:39,451 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:16:39,451 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 00:16:39,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:39 BoogieIcfgContainer [2020-11-30 00:16:39,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:16:39,455 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-30 00:16:39,457 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-30 00:16:39,468 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-30 00:16:39,468 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:39" (1/1) ... [2020-11-30 00:16:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2020-11-30 00:16:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2020-11-30 00:16:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:16:39,535 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 28 states and 34 transitions. [2020-11-30 00:16:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-30 00:16:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:16:39,716 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 39 states and 55 transitions. [2020-11-30 00:16:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-11-30 00:16:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:16:40,043 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 39 states and 53 transitions. [2020-11-30 00:16:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-11-30 00:16:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:16:40,283 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 39 states and 51 transitions. [2020-11-30 00:16:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-11-30 00:16:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:16:40,538 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 50 states and 72 transitions. [2020-11-30 00:16:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 72 transitions. [2020-11-30 00:16:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:16:41,651 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 61 states and 91 transitions. [2020-11-30 00:16:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-11-30 00:16:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:16:42,893 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 72 states and 114 transitions. [2020-11-30 00:16:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 114 transitions. [2020-11-30 00:16:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:16:44,803 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 83 states and 135 transitions. [2020-11-30 00:16:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2020-11-30 00:16:46,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:16:46,157 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 85 states and 143 transitions. [2020-11-30 00:16:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 143 transitions. [2020-11-30 00:16:47,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:16:47,203 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 87 states and 151 transitions. [2020-11-30 00:16:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 151 transitions. [2020-11-30 00:16:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:16:48,452 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 89 states and 159 transitions. [2020-11-30 00:16:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 159 transitions. [2020-11-30 00:16:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:16:49,019 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:16:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 98 states and 184 transitions. [2020-11-30 00:16:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 184 transitions. [2020-11-30 00:16:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:16:52,687 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:16:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:16:52,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:16:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:16:52,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:16:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:16:52,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:16:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:16:52,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:16:52,902 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 13 iterations. [2020-11-30 00:16:52,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 30.11 12:16:52 ImpRootNode [2020-11-30 00:16:52,939 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-30 00:16:52,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:16:52,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:16:52,940 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:16:52,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:39" (3/4) ... [2020-11-30 00:16:52,942 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:16:53,004 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8fb169a2-6218-44cc-bf6a-af6af701f079/bin/ukojak/witness.graphml [2020-11-30 00:16:53,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:16:53,006 INFO L168 Benchmark]: Toolchain (without parser) took 14903.43 ms. Allocated memory was 94.4 MB in the beginning and 260.0 MB in the end (delta: 165.7 MB). Free memory was 66.1 MB in the beginning and 93.1 MB in the end (delta: -27.0 MB). Peak memory consumption was 137.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:53,007 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 48.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:53,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.04 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 59.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:53,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.04 ms. Allocated memory is still 94.4 MB. Free memory was 59.2 MB in the beginning and 57.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:53,009 INFO L168 Benchmark]: Boogie Preprocessor took 50.56 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:53,010 INFO L168 Benchmark]: RCFGBuilder took 686.91 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.8 MB in the beginning and 78.3 MB in the end (delta: -22.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:53,011 INFO L168 Benchmark]: CodeCheck took 13483.91 ms. Allocated memory was 113.2 MB in the beginning and 260.0 MB in the end (delta: 146.8 MB). Free memory was 78.3 MB in the beginning and 96.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 128.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:53,012 INFO L168 Benchmark]: Witness Printer took 64.67 ms. Allocated memory is still 260.0 MB. Free memory was 96.3 MB in the beginning and 93.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:53,017 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, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 13, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69632 SDtfs, 40592 SDslu, 34980 SDs, 0 SdLazy, 117070 SolverSat, 23406 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2145 GetRequests, 1894 SyntacticMatches, 83 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13552 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 52080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 4/46 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND TRUE __VERIFIER_nondet_int() [L537] p->h = 1 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND TRUE __VERIFIER_nondet_int() [L544] p->h = 2 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h [L554] COND TRUE p->h == 1 [L555] EXPR p->n [L555] p = p->n [L554] EXPR p->h [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-2.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 48.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 562.04 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 59.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.04 ms. Allocated memory is still 94.4 MB. Free memory was 59.2 MB in the beginning and 57.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.56 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 686.91 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.8 MB in the beginning and 78.3 MB in the end (delta: -22.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * CodeCheck took 13483.91 ms. Allocated memory was 113.2 MB in the beginning and 260.0 MB in the end (delta: 146.8 MB). Free memory was 78.3 MB in the beginning and 96.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 128.2 MB. Max. memory is 16.1 GB. * Witness Printer took 64.67 ms. Allocated memory is still 260.0 MB. Free memory was 96.3 MB in the beginning and 93.1 MB in the end (delta: 3.1 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...