./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-optional-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-optional-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/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 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc ........................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 05:46:34,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:46:34,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:46:34,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:46:34,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:46:34,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:46:34,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:46:34,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:46:34,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:46:34,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:46:34,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:46:34,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:46:34,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:46:34,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:46:34,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:46:34,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:46:34,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:46:34,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:46:34,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:46:34,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:46:34,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:46:34,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:46:34,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:46:34,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:46:34,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:46:34,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:46:34,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:46:34,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:46:34,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:46:34,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:46:34,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:46:34,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:46:34,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:46:34,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:46:34,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:46:34,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:46:34,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:46:34,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:46:34,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:46:34,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:46:34,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:46:34,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 05:46:34,511 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:46:34,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:46:34,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 05:46:34,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 05:46:34,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:46:34,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:46:34,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:46:34,514 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:46:34,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:46:34,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:46:34,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:46:34,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:46:34,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:46:34,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:46:34,517 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:46:34,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:46:34,517 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:46:34,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:46:34,518 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 05:46:34,518 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 05:46:34,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:46:34,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:46:34,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 05:46:34,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:46:34,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:46:34,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:46:34,520 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 05:46:34,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:46:34,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:46:34,520 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/run_dir_d79459a0-f5e5-4397-b690-141477288488/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 -> 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc [2019-11-20 05:46:34,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:46:34,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:46:34,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:46:34,699 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:46:34,699 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:46:34,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-optional-2.i [2019-11-20 05:46:34,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/data/da104a5e5/952869eb803b40bf94270798a07ab809/FLAG094ead837 [2019-11-20 05:46:35,162 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:46:35,162 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/sv-benchmarks/c/forester-heap/sll-optional-2.i [2019-11-20 05:46:35,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/data/da104a5e5/952869eb803b40bf94270798a07ab809/FLAG094ead837 [2019-11-20 05:46:35,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/data/da104a5e5/952869eb803b40bf94270798a07ab809 [2019-11-20 05:46:35,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:46:35,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:46:35,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:46:35,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:46:35,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:46:35,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:35,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f57c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35, skipping insertion in model container [2019-11-20 05:46:35,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:35,507 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:46:35,551 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:46:35,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:46:35,882 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:46:35,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:46:35,962 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:46:35,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35 WrapperNode [2019-11-20 05:46:35,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:46:35,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:46:35,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:46:35,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:46:35,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:35,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:46:36,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:46:36,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:46:36,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:46:36,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... [2019-11-20 05:46:36,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:46:36,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:46:36,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:46:36,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:46:36,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/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 [2019-11-20 05:46:36,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 05:46:36,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 05:46:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:46:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 05:46:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 05:46:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:46:36,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:46:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:46:37,338 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:46:37,338 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 05:46:37,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:46:37 BoogieIcfgContainer [2019-11-20 05:46:37,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:46:37,339 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 05:46:37,340 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 05:46:37,349 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 05:46:37,350 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:46:37" (1/1) ... [2019-11-20 05:46:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:46:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:46:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 13 states and 19 transitions. [2019-11-20 05:46:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 19 transitions. [2019-11-20 05:46:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 05:46:37,390 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:46:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:46:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:46:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 05:46:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2019-11-20 05:46:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-20 05:46:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 05:46:37,543 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 05:46:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:46:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:46:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:46:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:46:37,895 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2019-11-20 05:46:37,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 05:46:37 ImpRootNode [2019-11-20 05:46:37,937 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 05:46:37,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:46:37,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:46:37,937 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:46:37,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:46:37" (3/4) ... [2019-11-20 05:46:37,940 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 05:46:38,004 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d79459a0-f5e5-4397-b690-141477288488/bin/ukojak/witness.graphml [2019-11-20 05:46:38,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:46:38,010 INFO L168 Benchmark]: Toolchain (without parser) took 2513.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -76.0 MB). Peak memory consumption was 68.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:46:38,011 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:46:38,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:46:38,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.01 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-20 05:46:38,013 INFO L168 Benchmark]: Boogie Preprocessor took 61.56 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. [2019-11-20 05:46:38,013 INFO L168 Benchmark]: RCFGBuilder took 1245.33 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: 69.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:46:38,016 INFO L168 Benchmark]: CodeCheck took 597.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:46:38,016 INFO L168 Benchmark]: Witness Printer took 67.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-20 05:46:38,020 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 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 48 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] COND FALSE !(__VERIFIER_nondet_int()) [L987] COND FALSE !(__VERIFIER_nondet_int()) [L987] head->data = 0 [L987] head->opt = head [L988] SLL* x = head; [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head [L994] COND TRUE x != ((void*)0) [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 467.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.01 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.56 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 1245.33 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: 69.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. * CodeCheck took 597.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * Witness Printer took 67.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...