./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/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 5a3019657b4c9b0e8c0aa3e888313d420fe28d28 .................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 16:31:50,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:31:50,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:31:50,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:31:50,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:31:50,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:31:50,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:31:50,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:31:50,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:31:50,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:31:50,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:31:50,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:31:50,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:31:50,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:31:50,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:31:50,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:31:50,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:31:50,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:31:50,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:31:50,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:31:51,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:31:51,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:31:51,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:31:51,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:31:51,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:31:51,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:31:51,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:31:51,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:31:51,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:31:51,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:31:51,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:31:51,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:31:51,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:31:51,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:31:51,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:31:51,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:31:51,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:31:51,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:31:51,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:31:51,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:31:51,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:31:51,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-12-01 16:31:51,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:31:51,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:31:51,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:31:51,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:31:51,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:31:51,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:31:51,091 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 16:31:51,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:31:51,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:31:51,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:31:51,092 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 16:31:51,093 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 16:31:51,093 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 16:31:51,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:31:51,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:31:51,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:31:51,094 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:31:51,095 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:31:51,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:31:51,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:31:51,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:31:51,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:31:51,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:31:51,097 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:31:51,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:31:51,097 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_c408277a-329e-46e8-8bbf-699d4d02a0e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a3019657b4c9b0e8c0aa3e888313d420fe28d28 [2020-12-01 16:31:51,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:31:51,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:31:51,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:31:51,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:31:51,570 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:31:51,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2020-12-01 16:31:51,700 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/data/a4127b3ce/45ead090b7d94240b9a1e66992dcc1a2/FLAGcbc7937f3 [2020-12-01 16:31:52,446 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:31:52,447 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2020-12-01 16:31:52,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/data/a4127b3ce/45ead090b7d94240b9a1e66992dcc1a2/FLAGcbc7937f3 [2020-12-01 16:31:52,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/data/a4127b3ce/45ead090b7d94240b9a1e66992dcc1a2 [2020-12-01 16:31:52,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:31:52,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:31:52,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:31:52,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:31:52,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:31:52,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:31:52" (1/1) ... [2020-12-01 16:31:52,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c61038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:52, skipping insertion in model container [2020-12-01 16:31:52,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:31:52" (1/1) ... [2020-12-01 16:31:52,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:31:52,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:31:53,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:31:53,288 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:31:53,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:31:53,435 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:31:53,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53 WrapperNode [2020-12-01 16:31:53,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:31:53,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:31:53,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:31:53,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:31:53,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:31:53,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:31:53,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:31:53,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:31:53,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... [2020-12-01 16:31:53,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:31:53,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:31:53,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:31:53,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:31:53,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:31:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/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 [2020-12-01 16:31:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:31:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:31:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:31:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:31:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:31:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:31:54,767 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:31:54,767 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 16:31:54,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:31:54 BoogieIcfgContainer [2020-12-01 16:31:54,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:31:54,772 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:31:54,772 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:31:54,792 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:31:54,794 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:31:54" (1/1) ... [2020-12-01 16:31:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:31:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 54 states and 61 transitions. [2020-12-01 16:31:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-12-01 16:31:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 16:31:54,892 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 53 states and 60 transitions. [2020-12-01 16:31:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-12-01 16:31:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 16:31:55,166 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 55 states and 64 transitions. [2020-12-01 16:31:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-12-01 16:31:55,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 16:31:55,583 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 54 states and 63 transitions. [2020-12-01 16:31:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-12-01 16:31:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 16:31:55,671 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 55 states and 65 transitions. [2020-12-01 16:31:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-12-01 16:31:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:31:56,250 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 58 states and 72 transitions. [2020-12-01 16:31:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-12-01 16:31:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:31:57,342 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 59 states and 74 transitions. [2020-12-01 16:31:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2020-12-01 16:31:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:31:57,958 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 58 states and 73 transitions. [2020-12-01 16:31:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2020-12-01 16:31:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:31:58,072 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:58,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 60 states and 77 transitions. [2020-12-01 16:31:58,193 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2020-12-01 16:31:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:31:58,194 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 59 states and 76 transitions. [2020-12-01 16:31:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2020-12-01 16:31:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:31:58,240 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 61 states and 81 transitions. [2020-12-01 16:31:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2020-12-01 16:31:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 16:31:58,482 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:31:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:31:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 63 states and 85 transitions. [2020-12-01 16:31:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2020-12-01 16:31:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 16:31:59,369 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:31:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:31:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 67 states and 93 transitions. [2020-12-01 16:32:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2020-12-01 16:32:01,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:32:01,134 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 60 states and 79 transitions. [2020-12-01 16:32:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2020-12-01 16:32:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:32:01,837 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 61 states and 79 transitions. [2020-12-01 16:32:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2020-12-01 16:32:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:32:01,949 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 62 states and 82 transitions. [2020-12-01 16:32:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-12-01 16:32:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 16:32:02,469 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 64 states and 87 transitions. [2020-12-01 16:32:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2020-12-01 16:32:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 16:32:04,132 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 63 states and 86 transitions. [2020-12-01 16:32:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2020-12-01 16:32:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 16:32:04,171 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 65 states and 89 transitions. [2020-12-01 16:32:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2020-12-01 16:32:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 16:32:05,258 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 16:32:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 66 states and 93 transitions. [2020-12-01 16:32:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-12-01 16:32:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 16:32:06,543 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 16:32:07,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 67 states and 96 transitions. [2020-12-01 16:32:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2020-12-01 16:32:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 16:32:07,395 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 71 states and 104 transitions. [2020-12-01 16:32:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2020-12-01 16:32:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 16:32:08,939 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 75 states and 114 transitions. [2020-12-01 16:32:11,179 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 114 transitions. [2020-12-01 16:32:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 16:32:11,180 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:32:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:32:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:32:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 69 states and 97 transitions. [2020-12-01 16:32:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2020-12-01 16:32:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 16:32:11,588 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:32:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:32:11,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:32:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:32:11,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:32:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:32:11,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:32:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:32:11,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:32:12,214 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 24 iterations. [2020-12-01 16:32:12,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:32:12 ImpRootNode [2020-12-01 16:32:12,269 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:32:12,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:32:12,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:32:12,271 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:32:12,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:31:54" (3/4) ... [2020-12-01 16:32:12,275 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:32:12,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c408277a-329e-46e8-8bbf-699d4d02a0e7/bin/ukojak/witness.graphml [2020-12-01 16:32:12,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:32:12,379 INFO L168 Benchmark]: Toolchain (without parser) took 19685.03 ms. Allocated memory was 81.8 MB in the beginning and 247.5 MB in the end (delta: 165.7 MB). Free memory was 47.4 MB in the beginning and 100.4 MB in the end (delta: -53.0 MB). Peak memory consumption was 111.9 MB. Max. memory is 16.1 GB. [2020-12-01 16:32:12,380 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 61.3 MB in the end (delta: 22.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:32:12,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.19 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 47.3 MB in the beginning and 74.2 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:32:12,382 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.36 ms. Allocated memory is still 111.1 MB. Free memory was 73.7 MB in the beginning and 72.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:32:12,383 INFO L168 Benchmark]: Boogie Preprocessor took 86.04 ms. Allocated memory is still 111.1 MB. Free memory was 72.1 MB in the beginning and 70.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:32:12,384 INFO L168 Benchmark]: RCFGBuilder took 1132.48 ms. Allocated memory is still 111.1 MB. Free memory was 70.3 MB in the beginning and 65.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-12-01 16:32:12,385 INFO L168 Benchmark]: CodeCheck took 17497.55 ms. Allocated memory was 111.1 MB in the beginning and 247.5 MB in the end (delta: 136.3 MB). Free memory was 65.9 MB in the beginning and 102.5 MB in the end (delta: -36.7 MB). Peak memory consumption was 99.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:32:12,386 INFO L168 Benchmark]: Witness Printer took 106.69 ms. Allocated memory is still 247.5 MB. Free memory was 102.5 MB in the beginning and 100.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:32:12,391 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, 54 locations, 27 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.3s, OverallIterations: 24, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17302168 SDtfs, 24733976 SDslu, 10781184 SDs, 0 SdLazy, 115828680 SolverSat, 39853032 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1310 GetRequests, 1089 SyntacticMatches, 39 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15598 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 5409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 16 PerfectInterpolantSequences, 3/19 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: 548]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; [L521] COND FALSE !(i < length - 1) [L527] nondetString[length-1] = '\0' [L528] return nondetString; [L546] char* s1 = build_nondet_String(); [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; [L521] COND FALSE !(i < length - 1) [L527] nondetString[length-1] = '\0' [L528] return nondetString; [L547] char* s2 = build_nondet_String(); [L532] const char *sc1; [L533] const char *s; [L534] int c; [L535] sc1 = s1 [L535] EXPR \read(*sc1) [L535] COND FALSE !(*sc1 != '\0') [L543] return 0; * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 81.8 MB. Free memory was 61.3 MB in the beginning and 61.3 MB in the end (delta: 22.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 742.19 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 47.3 MB in the beginning and 74.2 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.36 ms. Allocated memory is still 111.1 MB. Free memory was 73.7 MB in the beginning and 72.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.04 ms. Allocated memory is still 111.1 MB. Free memory was 72.1 MB in the beginning and 70.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1132.48 ms. Allocated memory is still 111.1 MB. Free memory was 70.3 MB in the beginning and 65.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * CodeCheck took 17497.55 ms. Allocated memory was 111.1 MB in the beginning and 247.5 MB in the end (delta: 136.3 MB). Free memory was 65.9 MB in the beginning and 102.5 MB in the end (delta: -36.7 MB). Peak memory consumption was 99.7 MB. Max. memory is 16.1 GB. * Witness Printer took 106.69 ms. Allocated memory is still 247.5 MB. Free memory was 102.5 MB in the beginning and 100.4 MB in the end (delta: 2.1 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...