./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-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_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-optional-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/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 8409443a6b8db5c0500e3e8aa54c33463c524ec9 ............................................................................................................................................................................................................................... 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 04:04:43,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:04:43,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:04:43,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:04:43,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:04:43,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:04:43,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:04:43,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:04:43,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:04:43,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:04:43,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:04:43,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:04:43,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:04:43,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:04:43,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:04:43,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:04:43,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:04:43,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:04:43,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:04:43,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:04:43,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:04:43,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:04:43,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:04:43,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:04:43,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:04:43,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:04:43,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:04:43,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:04:43,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:04:43,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:04:43,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:04:43,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:04:43,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:04:43,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:04:43,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:04:43,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:04:44,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:04:44,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:04:44,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:04:44,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:04:44,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:04:44,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 04:04:44,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:04:44,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:04:44,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 04:04:44,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 04:04:44,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:04:44,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:04:44,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:04:44,041 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:04:44,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:04:44,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:04:44,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:04:44,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:04:44,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:04:44,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:04:44,042 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:04:44,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:04:44,043 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:04:44,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:04:44,043 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 04:04:44,043 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 04:04:44,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:04:44,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:04:44,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 04:04:44,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:04:44,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:04:44,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:04:44,046 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 04:04:44,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:04:44,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:04:44,046 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_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/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 -> 8409443a6b8db5c0500e3e8aa54c33463c524ec9 [2019-11-20 04:04:44,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:04:44,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:04:44,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:04:44,238 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:04:44,238 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:04:44,240 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-optional-2.i [2019-11-20 04:04:44,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/data/115333cf8/74bd1e7980714699b29ed1cfb1a3d980/FLAG4c8898c00 [2019-11-20 04:04:44,759 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:04:44,759 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/sv-benchmarks/c/forester-heap/dll-optional-2.i [2019-11-20 04:04:44,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/data/115333cf8/74bd1e7980714699b29ed1cfb1a3d980/FLAG4c8898c00 [2019-11-20 04:04:45,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/data/115333cf8/74bd1e7980714699b29ed1cfb1a3d980 [2019-11-20 04:04:45,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:04:45,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:04:45,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:04:45,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:04:45,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:04:45,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d3d969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45, skipping insertion in model container [2019-11-20 04:04:45,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,115 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:04:45,166 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:04:45,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:04:45,547 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:04:45,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:04:45,648 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:04:45,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45 WrapperNode [2019-11-20 04:04:45,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:04:45,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:04:45,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:04:45,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:04:45,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:04:45,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:04:45,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:04:45,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:04:45,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... [2019-11-20 04:04:45,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:04:45,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:04:45,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:04:45,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:04:45,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/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 04:04:45,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 04:04:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 04:04:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 04:04:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 04:04:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 04:04:45,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:04:45,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:04:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:04:46,998 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:04:46,999 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 04:04:47,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:04:46 BoogieIcfgContainer [2019-11-20 04:04:47,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:04:47,000 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 04:04:47,002 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 04:04:47,012 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 04:04:47,012 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:04:46" (1/1) ... [2019-11-20 04:04:47,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:04:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:04:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 13 states and 19 transitions. [2019-11-20 04:04:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 19 transitions. [2019-11-20 04:04:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 04:04:47,067 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:04:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:04:47,253 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 04:04:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 04:04:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2019-11-20 04:04:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-20 04:04:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 04:04:47,261 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 04:04:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:04:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:04:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:04:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:04:47,789 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2019-11-20 04:04:47,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 04:04:47 ImpRootNode [2019-11-20 04:04:47,816 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 04:04:47,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:04:47,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:04:47,817 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:04:47,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:04:46" (3/4) ... [2019-11-20 04:04:47,819 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 04:04:47,860 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f0f8490-44e7-4823-a3b5-da8ce45a5af9/bin/ukojak/witness.graphml [2019-11-20 04:04:47,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:04:47,862 INFO L168 Benchmark]: Toolchain (without parser) took 2765.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.6 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -117.0 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:47,863 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:04:47,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.6 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -220.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:47,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:04:47,864 INFO L168 Benchmark]: Boogie Preprocessor took 32.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:04:47,865 INFO L168 Benchmark]: RCFGBuilder took 1271.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:47,865 INFO L168 Benchmark]: CodeCheck took 815.91 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: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:47,866 INFO L168 Benchmark]: Witness Printer took 43.77 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:47,869 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: 0.7s, 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: 998]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] COND TRUE __VERIFIER_nondet_int() [L989] head->data = 2 [L989] head->opt = malloc(sizeof(SLL)) [L989] EXPR head->opt [L989] head->opt->next = ((void*)0) [L990] SLL* x = head; [L992] COND FALSE !(__VERIFIER_nondet_int()) [L995] x = head [L996] COND TRUE x != ((void*)0) [L998] EXPR x->data [L998] EXPR x->data == 2 && x->opt == x [L998] EXPR x->opt [L998] EXPR x->data == 2 && x->opt == x [L998] COND TRUE !(x->data == 2 && x->opt == x) [L998] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 552.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 185.6 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -220.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1271.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 11.5 GB. * CodeCheck took 815.91 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: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Witness Printer took 43.77 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...