./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa3ae4378a5284e50be7191d52900376e96b0fdc ........................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:40:03,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:40:03,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:40:03,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:40:03,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:40:03,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:40:03,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:40:03,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:40:03,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:40:03,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:40:03,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:40:03,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:40:03,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:40:03,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:40:03,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:40:03,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:40:03,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:40:03,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:40:03,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:40:03,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:40:03,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:40:03,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:40:03,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:40:03,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:40:03,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:40:03,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:40:03,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:40:03,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:40:03,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:40:03,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:40:03,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:40:03,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:40:03,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:40:03,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:40:03,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:40:03,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:40:03,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:40:03,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:40:03,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:40:03,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:40:03,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:40:03,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-28 04:40:03,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:40:03,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:40:03,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:40:03,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:40:03,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:40:03,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:40:03,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:40:03,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:40:03,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:40:03,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:40:03,513 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 04:40:03,514 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 04:40:03,514 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 04:40:03,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:40:03,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:40:03,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:40:03,515 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:40:03,515 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:40:03,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:40:03,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:40:03,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:40:03,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:40:03,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:40:03,516 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:40:03,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:40:03,516 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_ed516afc-a926-421b-a731-990580a41207/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa3ae4378a5284e50be7191d52900376e96b0fdc [2020-11-28 04:40:03,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:40:03,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:40:03,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:40:03,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:40:03,806 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:40:03,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2020-11-28 04:40:03,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/data/660e566a2/4d7e0a1afd7e423cb91fce6c9bdad3de/FLAG095b81dda [2020-11-28 04:40:04,382 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:40:04,383 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2020-11-28 04:40:04,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/data/660e566a2/4d7e0a1afd7e423cb91fce6c9bdad3de/FLAG095b81dda [2020-11-28 04:40:04,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/data/660e566a2/4d7e0a1afd7e423cb91fce6c9bdad3de [2020-11-28 04:40:04,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:40:04,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:40:04,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:04,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:40:04,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:40:04,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:04,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1db2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04, skipping insertion in model container [2020-11-28 04:40:04,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:04,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:40:04,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:40:04,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:04,946 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:40:04,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:04,996 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:40:04,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04 WrapperNode [2020-11-28 04:40:04,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:04,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:05,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:40:05,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:40:05,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:05,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:40:05,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:40:05,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:40:05,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... [2020-11-28 04:40:05,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:40:05,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:40:05,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:40:05,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:40:05,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/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 [2020-11-28 04:40:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:40:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:40:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:40:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:40:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:40:05,539 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:40:05,540 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 04:40:05,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:05 BoogieIcfgContainer [2020-11-28 04:40:05,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:40:05,543 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:40:05,543 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:40:05,552 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:40:05,553 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:40:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2020-11-28 04:40:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 04:40:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:40:05,598 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:40:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2020-11-28 04:40:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-28 04:40:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:40:05,772 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:40:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2020-11-28 04:40:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 04:40:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:40:06,005 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:40:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2020-11-28 04:40:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-28 04:40:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:40:06,193 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:06,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:06,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:06,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:40:06,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:40:06,295 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2020-11-28 04:40:06,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:40:06 ImpRootNode [2020-11-28 04:40:06,315 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:40:06,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:40:06,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:40:06,316 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:40:06,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:05" (3/4) ... [2020-11-28 04:40:06,319 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:40:06,356 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ed516afc-a926-421b-a731-990580a41207/bin/ukojak/witness.graphml [2020-11-28 04:40:06,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:40:06,359 INFO L168 Benchmark]: Toolchain (without parser) took 1601.77 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 61.0 MB in the beginning and 73.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:06,360 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 48.1 MB in the beginning and 48.1 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:06,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.04 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 69.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:06,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.79 ms. Allocated memory is still 90.2 MB. Free memory was 69.1 MB in the beginning and 68.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:06,362 INFO L168 Benchmark]: Boogie Preprocessor took 33.10 ms. Allocated memory is still 90.2 MB. Free memory was 68.0 MB in the beginning and 67.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:06,363 INFO L168 Benchmark]: RCFGBuilder took 465.81 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 55.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:06,364 INFO L168 Benchmark]: CodeCheck took 772.84 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 55.0 MB in the beginning and 75.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:06,365 INFO L168 Benchmark]: Witness Printer took 40.57 ms. Allocated memory is still 113.2 MB. Free memory was 75.5 MB in the beginning and 73.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:06,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 10 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 14 SDslu, 4 SDs, 0 SdLazy, 82 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; [L3] COND TRUE i < 2 [L4] int a[10]; [L5] COND TRUE i == 0 [L6] p = a [L3] i++ [L3] COND TRUE i < 2 [L4] int a[10]; [L5] COND FALSE !(i == 0) [L8] p[0] = 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 90.2 MB. Free memory was 48.1 MB in the beginning and 48.1 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 240.04 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 69.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.79 ms. Allocated memory is still 90.2 MB. Free memory was 69.1 MB in the beginning and 68.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.10 ms. Allocated memory is still 90.2 MB. Free memory was 68.0 MB in the beginning and 67.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 465.81 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 55.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 772.84 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 55.0 MB in the beginning and 75.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 40.57 ms. Allocated memory is still 113.2 MB. Free memory was 75.5 MB in the beginning and 73.9 MB in the end (delta: 1.5 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...