./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_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/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 [2020-12-01 16:55:20,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:55:20,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:55:21,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:55:21,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:55:21,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:55:21,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:55:21,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:55:21,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:55:21,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:55:21,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:55:21,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:55:21,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:55:21,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:55:21,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:55:21,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:55:21,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:55:21,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:55:21,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:55:21,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:55:21,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:55:21,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:55:21,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:55:21,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:55:21,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:55:21,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:55:21,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:55:21,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:55:21,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:55:21,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:55:21,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:55:21,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:55:21,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:55:21,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:55:21,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:55:21,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:55:21,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:55:21,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:55:21,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:55:21,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:55:21,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:55:21,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2020-12-01 16:55:21,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:55:21,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:55:21,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:55:21,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:55:21,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:55:21,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 16:55:21,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:55:21,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:55:21,212 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 16:55:21,212 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 16:55:21,213 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 16:55:21,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:55:21,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:55:21,214 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:55:21,215 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:55:21,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:55:21,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:55:21,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:55:21,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:55:21,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:55:21,217 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:55:21,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:55:21,217 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_73726e65-95a7-4b54-993d-8a4806fdfe1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2a8d3919c0496882213752e07135061fdbafdf6 [2020-12-01 16:55:21,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:55:21,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:55:21,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:55:21,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:55:21,577 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:55:21,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-12-01 16:55:21,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/data/27808b7e0/a3e97439d9304c9ea32c33d2e0a04190/FLAGc3ebdea20 [2020-12-01 16:55:22,242 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:55:22,244 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-12-01 16:55:22,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/data/27808b7e0/a3e97439d9304c9ea32c33d2e0a04190/FLAGc3ebdea20 [2020-12-01 16:55:22,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/data/27808b7e0/a3e97439d9304c9ea32c33d2e0a04190 [2020-12-01 16:55:22,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:55:22,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:55:22,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:55:22,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:55:22,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:55:22,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:22,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43471d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22, skipping insertion in model container [2020-12-01 16:55:22,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:22,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:55:22,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:55:22,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:55:22,895 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:55:22,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:55:22,940 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:55:22,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22 WrapperNode [2020-12-01 16:55:22,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:55:22,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:55:22,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:55:22,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:55:22,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:22,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:22,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:55:22,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:55:22,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:55:22,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:55:23,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:23,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:23,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:23,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:23,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:23,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:23,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... [2020-12-01 16:55:23,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:55:23,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:55:23,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:55:23,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:55:23,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:55:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/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 16:55:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:55:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:55:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:55:23,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:55:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:55:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:55:23,430 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:55:23,430 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 16:55:23,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:55:23 BoogieIcfgContainer [2020-12-01 16:55:23,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:55:23,435 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:55:23,435 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:55:23,448 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:55:23,448 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:55:23" (1/1) ... [2020-12-01 16:55:23,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:55:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 23 states and 24 transitions. [2020-12-01 16:55:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-01 16:55:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-01 16:55:23,499 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:23,658 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 16:55:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 22 states and 23 transitions. [2020-12-01 16:55:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-01 16:55:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-01 16:55:23,708 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:23,849 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 16:55:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 21 states and 22 transitions. [2020-12-01 16:55:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-01 16:55:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 16:55:24,069 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:24,134 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 16:55:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:24,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-01 16:55:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-01 16:55:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 16:55:24,171 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:24,253 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 16:55:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-01 16:55:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-01 16:55:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:55:24,409 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:24,537 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 16:55:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 22 states and 23 transitions. [2020-12-01 16:55:24,741 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-01 16:55:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:55:24,741 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:24,786 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 16:55:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 23 states and 25 transitions. [2020-12-01 16:55:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-01 16:55:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 16:55:24,874 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:24,895 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 16:55:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 24 states and 26 transitions. [2020-12-01 16:55:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-01 16:55:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 16:55:24,972 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:25,018 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 16:55:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2020-12-01 16:55:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-01 16:55:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 16:55:25,453 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:25,473 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 16:55:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2020-12-01 16:55:25,489 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-01 16:55:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 16:55:25,490 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:25,511 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 16:55:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 26 states and 29 transitions. [2020-12-01 16:55:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-12-01 16:55:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:55:25,531 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:25,569 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 16:55:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 25 states and 28 transitions. [2020-12-01 16:55:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-12-01 16:55:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 16:55:25,835 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:25,977 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 16:55:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 31 states and 35 transitions. [2020-12-01 16:55:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-12-01 16:55:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 16:55:26,842 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 16:55:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 23 states and 25 transitions. [2020-12-01 16:55:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-01 16:55:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 16:55:26,932 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 16:55:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 18 states and 19 transitions. [2020-12-01 16:55:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-01 16:55:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:55:26,984 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:55:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:55:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 16:55:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:55:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-01 16:55:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-01 16:55:27,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 16:55:27,071 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 16 iterations. [2020-12-01 16:55:27,080 INFO L765 CodeCheckObserver]: All specifications hold 12 specifications checked. All of them hold [2020-12-01 16:55:27,181 INFO L569 CodeCheckObserver]: Invariant with dag size 22 [2020-12-01 16:55:27,187 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-01 16:55:27,189 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-01 16:55:27,189 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-12-01 16:55:27,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-01 16:55:27,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-01 16:55:27,196 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-12-01 16:55:27,197 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-01 16:55:27,198 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-01 16:55:27,199 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-01 16:55:27,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:55:27 ImpRootNode [2020-12-01 16:55:27,200 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:55:27,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:55:27,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:55:27,201 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:55:27,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:55:23" (3/4) ... [2020-12-01 16:55:27,206 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 16:55:27,218 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-01 16:55:27,218 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-01 16:55:27,219 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 16:55:27,249 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 [2020-12-01 16:55:27,250 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(unknown-main_\old_#valid-unknown) == \valid [2020-12-01 16:55:27,269 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_73726e65-95a7-4b54-993d-8a4806fdfe1c/bin/ukojak/witness.graphml [2020-12-01 16:55:27,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:55:27,271 INFO L168 Benchmark]: Toolchain (without parser) took 4674.85 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 56.0 MB in the beginning and 82.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:27,272 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 90.2 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:55:27,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.90 ms. Allocated memory is still 90.2 MB. Free memory was 55.9 MB in the beginning and 67.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:27,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.22 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:55:27,275 INFO L168 Benchmark]: Boogie Preprocessor took 54.17 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:27,276 INFO L168 Benchmark]: RCFGBuilder took 387.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 49.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:27,277 INFO L168 Benchmark]: CodeCheck took 3765.09 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 49.5 MB in the beginning and 84.8 MB in the end (delta: -35.3 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:27,278 INFO L168 Benchmark]: Witness Printer took 68.67 ms. Allocated memory is still 119.5 MB. Free memory was 84.8 MB in the beginning and 82.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:55:27,283 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: 3.6s, 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, 1.8s 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 [2020-12-01 16:55:27,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-01 16:55:27,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-01 16:55:27,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-12-01 16:55:27,289 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-01 16:55:27,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-01 16:55:27,290 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 [2020-12-01 16:55:27,291 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-12-01 16:55:27,291 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 0.41 ms. Allocated memory is still 90.2 MB. Free memory was 66.0 MB in the beginning and 65.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.90 ms. Allocated memory is still 90.2 MB. Free memory was 55.9 MB in the beginning and 67.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.22 ms. Allocated memory is still 90.2 MB. Free memory was 67.7 MB in the beginning and 66.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.17 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 65.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 387.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 49.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 3765.09 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 49.5 MB in the beginning and 84.8 MB in the end (delta: -35.3 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. * Witness Printer took 68.67 ms. Allocated memory is still 119.5 MB. Free memory was 84.8 MB in the beginning and 82.8 MB in the end (delta: 2.0 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...