./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/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 64bit --witnessprinter.graph.data.programhash f2a8d3919c0496882213752e07135061fdbafdf6 ............................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-03 11:21:48,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 11:21:48,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 11:21:48,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 11:21:48,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 11:21:48,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 11:21:48,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 11:21:48,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 11:21:48,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 11:21:48,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 11:21:48,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 11:21:48,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 11:21:48,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 11:21:48,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 11:21:48,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 11:21:48,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 11:21:48,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 11:21:48,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 11:21:48,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 11:21:48,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 11:21:48,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 11:21:48,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 11:21:48,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 11:21:48,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 11:21:48,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 11:21:48,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 11:21:48,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 11:21:48,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 11:21:48,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 11:21:48,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 11:21:48,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 11:21:48,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 11:21:48,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 11:21:48,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 11:21:48,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 11:21:48,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 11:21:48,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 11:21:48,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 11:21:48,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 11:21:48,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 11:21:48,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 11:21:48,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2020-12-03 11:21:48,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 11:21:48,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 11:21:48,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 11:21:48,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 11:21:48,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 11:21:48,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 11:21:48,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 11:21:48,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 11:21:48,797 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-03 11:21:48,798 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-03 11:21:48,799 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-03 11:21:48,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 11:21:48,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 11:21:48,800 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-03 11:21:48,801 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-03 11:21:48,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 11:21:48,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-03 11:21:48,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-03 11:21:48,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 11:21:48,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 11:21:48,802 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-03 11:21:48,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 11:21:48,803 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_390286a4-a97f-4aa9-a45b-f65a71280c8b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2a8d3919c0496882213752e07135061fdbafdf6 [2020-12-03 11:21:49,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 11:21:49,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 11:21:49,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 11:21:49,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 11:21:49,182 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 11:21:49,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-12-03 11:21:49,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/data/9d85659e6/3f8a89e8e6fa408f880b551534dbd704/FLAG7e76ee2a2 [2020-12-03 11:21:49,953 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 11:21:49,954 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-12-03 11:21:49,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/data/9d85659e6/3f8a89e8e6fa408f880b551534dbd704/FLAG7e76ee2a2 [2020-12-03 11:21:50,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/data/9d85659e6/3f8a89e8e6fa408f880b551534dbd704 [2020-12-03 11:21:50,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 11:21:50,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 11:21:50,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 11:21:50,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 11:21:50,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 11:21:50,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626485d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50, skipping insertion in model container [2020-12-03 11:21:50,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 11:21:50,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 11:21:50,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 11:21:50,610 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 11:21:50,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 11:21:50,642 INFO L208 MainTranslator]: Completed translation [2020-12-03 11:21:50,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50 WrapperNode [2020-12-03 11:21:50,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 11:21:50,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 11:21:50,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 11:21:50,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 11:21:50,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 11:21:50,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 11:21:50,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 11:21:50,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 11:21:50,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... [2020-12-03 11:21:50,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 11:21:50,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 11:21:50,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 11:21:50,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 11:21:50,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:21:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/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 [2020-12-03 11:21:50,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 11:21:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-03 11:21:50,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 11:21:50,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 11:21:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 11:21:50,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 11:21:51,098 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 11:21:51,098 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-03 11:21:51,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:21:51 BoogieIcfgContainer [2020-12-03 11:21:51,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 11:21:51,102 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-03 11:21:51,102 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-03 11:21:51,116 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-03 11:21:51,116 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:21:51" (1/1) ... [2020-12-03 11:21:51,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 11:21:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 23 states and 24 transitions. [2020-12-03 11:21:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-03 11:21:51,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-03 11:21:51,188 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 22 states and 23 transitions. [2020-12-03 11:21:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-03 11:21:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-03 11:21:51,399 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 21 states and 22 transitions. [2020-12-03 11:21:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-03 11:21:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 11:21:51,628 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:51,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-03 11:21:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-03 11:21:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 11:21:51,723 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-03 11:21:51,955 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-03 11:21:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 11:21:51,956 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 22 states and 23 transitions. [2020-12-03 11:21:52,311 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-03 11:21:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 11:21:52,312 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 23 states and 25 transitions. [2020-12-03 11:21:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-03 11:21:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 11:21:52,426 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 24 states and 26 transitions. [2020-12-03 11:21:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-03 11:21:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 11:21:52,539 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2020-12-03 11:21:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-03 11:21:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 11:21:53,068 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2020-12-03 11:21:53,104 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-03 11:21:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 11:21:53,104 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 26 states and 29 transitions. [2020-12-03 11:21:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-03 11:21:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-03 11:21:53,144 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 25 states and 28 transitions. [2020-12-03 11:21:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-12-03 11:21:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 11:21:53,427 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:21:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 31 states and 35 transitions. [2020-12-03 11:21:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-12-03 11:21:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-03 11:21:54,487 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 11:21:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 23 states and 25 transitions. [2020-12-03 11:21:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-03 11:21:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 11:21:54,536 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 11:21:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 18 states and 19 transitions. [2020-12-03 11:21:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-03 11:21:54,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 11:21:54,584 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:21:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:21:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 11:21:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:21:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-03 11:21:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-03 11:21:54,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 11:21:54,652 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 16 iterations. [2020-12-03 11:21:54,660 INFO L765 CodeCheckObserver]: All specifications hold 12 specifications checked. All of them hold [2020-12-03 11:21:54,741 INFO L569 CodeCheckObserver]: Invariant with dag size 22 [2020-12-03 11:21:54,748 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-03 11:21:54,749 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-03 11:21:54,749 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-12-03 11:21:54,755 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-03 11:21:54,755 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-03 11:21:54,755 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-12-03 11:21:54,756 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-03 11:21:54,757 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-03 11:21:54,757 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-03 11:21:54,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 11:21:54 ImpRootNode [2020-12-03 11:21:54,758 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-03 11:21:54,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 11:21:54,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 11:21:54,759 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 11:21:54,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:21:51" (3/4) ... [2020-12-03 11:21:54,763 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 11:21:54,775 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-03 11:21:54,775 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-03 11:21:54,775 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 11:21:54,804 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\valid[p := 0] == \old(unknown-main_\old_#valid-unknown) && p + 4 <= unknown-#length-unknown[p]) && p <= 0) && p + 1 <= unknown-#StackHeapBarrier-unknown) && \valid[p] == 1) && 0 < p + 1 [2020-12-03 11:21:54,805 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(unknown-main_\old_#valid-unknown) == \valid [2020-12-03 11:21:54,824 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_390286a4-a97f-4aa9-a45b-f65a71280c8b/bin/ukojak/witness.graphml [2020-12-03 11:21:54,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 11:21:54,827 INFO L168 Benchmark]: Toolchain (without parser) took 4488.78 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 77.4 MB in the beginning and 52.3 MB in the end (delta: 25.1 MB). Peak memory consumption was 45.4 MB. Max. memory is 16.1 GB. [2020-12-03 11:21:54,827 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:21:54,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.20 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 83.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 11:21:54,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.89 ms. Allocated memory is still 104.9 MB. Free memory was 83.3 MB in the beginning and 82.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:21:54,830 INFO L168 Benchmark]: Boogie Preprocessor took 26.33 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 81.2 MB in the end (delta: 570.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 11:21:54,830 INFO L168 Benchmark]: RCFGBuilder took 390.82 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 65.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-03 11:21:54,831 INFO L168 Benchmark]: CodeCheck took 3655.99 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 65.0 MB in the beginning and 54.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-12-03 11:21:54,832 INFO L168 Benchmark]: Witness Printer took 65.67 ms. Allocated memory is still 125.8 MB. Free memory was 54.4 MB in the beginning and 52.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 11:21:54,836 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, 23 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 16, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10240 SDtfs, 38652 SDslu, 17168 SDs, 0 SdLazy, 261464 SolverSat, 131120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 709 GetRequests, 617 SyntacticMatches, 18 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2951 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 6/6 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 - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2020-12-03 11:21:54,840 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-03 11:21:54,841 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-03 11:21:54,841 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-12-03 11:21:54,842 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-03 11:21:54,842 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-03 11:21:54,842 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: ((((\valid[p := 0] == \old(unknown-main_\old_#valid-unknown) && p + 4 <= unknown-#length-unknown[p]) && p <= 0) && p + 1 <= unknown-#StackHeapBarrier-unknown) && \valid[p] == 1) && 0 < p + 1 - InvariantResult [Line: 13]: Loop Invariant [2020-12-03 11:21:54,843 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-03 11:21:54,844 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid Derived loop invariant: \old(unknown-main_\old_#valid-unknown) == \valid * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 39.4 MB in the beginning and 39.3 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.20 ms. Allocated memory is still 104.9 MB. Free memory was 77.4 MB in the beginning and 83.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.89 ms. Allocated memory is still 104.9 MB. Free memory was 83.3 MB in the beginning and 82.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.33 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 81.2 MB in the end (delta: 570.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 390.82 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 65.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 3655.99 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 65.0 MB in the beginning and 54.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 65.67 ms. Allocated memory is still 125.8 MB. Free memory was 54.4 MB in the beginning and 52.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid RESULT: Ultimate proved your program to be correct! Received shutdown request...