./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ --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 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:34:46,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:34:46,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:34:46,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:34:46,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:34:46,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:34:46,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:34:46,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:34:46,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:34:46,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:34:46,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:34:46,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:34:46,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:34:46,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:34:46,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:34:46,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:34:46,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:34:46,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:34:46,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:34:46,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:34:46,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:34:46,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:34:46,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:34:46,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:34:46,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:34:46,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:34:46,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:34:46,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:34:46,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:34:46,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:34:46,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:34:46,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:34:46,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:34:46,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:34:46,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:34:46,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:34:46,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:34:46,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:34:46,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:34:46,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:34:46,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:34:46,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-23 01:34:46,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:34:46,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:34:46,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:34:46,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:34:46,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:34:46,864 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:34:46,864 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:34:46,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:34:46,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:34:46,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:34:46,865 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 01:34:46,865 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 01:34:46,866 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 01:34:46,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:34:46,866 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:34:46,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:34:46,867 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:34:46,867 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:34:46,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:34:46,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:34:46,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:34:46,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:34:46,868 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:34:46,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:34:46,868 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_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a [2021-11-23 01:34:47,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:34:47,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:34:47,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:34:47,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:34:47,188 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:34:47,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2021-11-23 01:34:47,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/data/48983d8b7/06b6c4ad016940eaad7660a06f3a7b4b/FLAG2a045ba52 [2021-11-23 01:34:47,747 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:34:47,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/sv-benchmarks/c/verifythis/elimination_max_rec.c [2021-11-23 01:34:47,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/data/48983d8b7/06b6c4ad016940eaad7660a06f3a7b4b/FLAG2a045ba52 [2021-11-23 01:34:48,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/data/48983d8b7/06b6c4ad016940eaad7660a06f3a7b4b [2021-11-23 01:34:48,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:34:48,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:34:48,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:34:48,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:34:48,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:34:48,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677f1156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48, skipping insertion in model container [2021-11-23 01:34:48,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:34:48,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:34:48,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2021-11-23 01:34:48,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:34:48,323 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:34:48,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2021-11-23 01:34:48,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:34:48,356 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:34:48,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48 WrapperNode [2021-11-23 01:34:48,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:34:48,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:34:48,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:34:48,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:34:48,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,398 INFO L137 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 82 [2021-11-23 01:34:48,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:34:48,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:34:48,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:34:48,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:34:48,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:34:48,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:34:48,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:34:48,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:34:48,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:34:48,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:34:48,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:34:48,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:34:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:34:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:34:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-11-23 01:34:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-11-23 01:34:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:34:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:34:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:34:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:34:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:34:48,578 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:34:48,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:34:48,804 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:34:48,897 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:34:48,898 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:34:48,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:34:48 BoogieIcfgContainer [2021-11-23 01:34:48,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:34:48,910 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:34:48,910 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:34:48,921 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:34:48,921 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:34:48" (1/1) ... [2021-11-23 01:34:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:34:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 38 states and 41 transitions. [2021-11-23 01:34:49,005 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-11-23 01:34:49,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 01:34:49,009 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:49,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 41 states and 45 transitions. [2021-11-23 01:34:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-11-23 01:34:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 01:34:49,400 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:49,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 46 states and 53 transitions. [2021-11-23 01:34:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-11-23 01:34:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 01:34:49,900 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:49,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 51 states and 61 transitions. [2021-11-23 01:34:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-11-23 01:34:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 01:34:51,213 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:51,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 50 states and 60 transitions. [2021-11-23 01:34:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-23 01:34:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 01:34:51,368 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:51,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 49 states and 59 transitions. [2021-11-23 01:34:51,451 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-11-23 01:34:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 01:34:51,451 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:51,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 53 states and 64 transitions. [2021-11-23 01:34:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2021-11-23 01:34:52,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:34:52,389 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:52,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 52 states and 63 transitions. [2021-11-23 01:34:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2021-11-23 01:34:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 01:34:52,835 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:52,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 51 states and 62 transitions. [2021-11-23 01:34:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-23 01:34:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 01:34:53,169 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:53,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 50 states and 61 transitions. [2021-11-23 01:34:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2021-11-23 01:34:54,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 01:34:54,181 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:54,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 59 states and 76 transitions. [2021-11-23 01:34:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2021-11-23 01:34:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:34:57,242 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:57,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:34:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:34:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 59 states and 75 transitions. [2021-11-23 01:34:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2021-11-23 01:34:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 01:34:57,795 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:34:57,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:34:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:34:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 65 states and 86 transitions. [2021-11-23 01:35:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2021-11-23 01:35:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 01:35:00,299 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:00,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:35:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 67 states and 89 transitions. [2021-11-23 01:35:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2021-11-23 01:35:00,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 01:35:00,344 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:00,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 70 states and 98 transitions. [2021-11-23 01:35:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2021-11-23 01:35:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 01:35:03,288 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:03,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 73 states and 101 transitions. [2021-11-23 01:35:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2021-11-23 01:35:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:35:04,367 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:04,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:35:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 72 states and 100 transitions. [2021-11-23 01:35:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2021-11-23 01:35:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:35:04,404 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:04,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 78 states and 130 transitions. [2021-11-23 01:35:09,091 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 130 transitions. [2021-11-23 01:35:09,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 01:35:09,092 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 88 states and 153 transitions. [2021-11-23 01:35:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 153 transitions. [2021-11-23 01:35:15,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 01:35:15,109 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:15,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 94 states and 168 transitions. [2021-11-23 01:35:20,876 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 168 transitions. [2021-11-23 01:35:20,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 01:35:20,877 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:20,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 97 states and 185 transitions. [2021-11-23 01:35:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 185 transitions. [2021-11-23 01:35:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 01:35:25,228 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:25,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:35:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 100 states and 201 transitions. [2021-11-23 01:35:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 201 transitions. [2021-11-23 01:35:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 01:35:33,059 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:33,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 01:35:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 42 states and 54 transitions. [2021-11-23 01:35:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2021-11-23 01:35:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 01:35:37,951 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:37,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 01:35:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:35:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 51 states and 80 transitions. [2021-11-23 01:35:54,014 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 80 transitions. [2021-11-23 01:35:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 01:35:54,016 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:35:54,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:35:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:35:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 01:36:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:36:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 44 states and 58 transitions. [2021-11-23 01:36:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2021-11-23 01:36:08,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:36:08,121 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 25 iterations. [2021-11-23 01:36:08,130 INFO L754 CodeCheckObserver]: All specifications hold 14 specifications checked. All of them hold [2021-11-23 01:36:08,517 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 01:36:08,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:36:08 ImpRootNode [2021-11-23 01:36:08,521 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:36:08,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:36:08,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:36:08,522 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:36:08,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:34:48" (3/4) ... [2021-11-23 01:36:08,525 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:36:08,530 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-11-23 01:36:08,536 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2021-11-23 01:36:08,536 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-23 01:36:08,536 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 01:36:08,537 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:36:08,589 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:36:08,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:36:08,590 INFO L158 Benchmark]: Toolchain (without parser) took 80490.21ms. Allocated memory was 98.6MB in the beginning and 677.4MB in the end (delta: 578.8MB). Free memory was 62.6MB in the beginning and 510.9MB in the end (delta: -448.2MB). Peak memory consumption was 130.7MB. Max. memory is 16.1GB. [2021-11-23 01:36:08,591 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 98.6MB. Free memory was 69.1MB in the beginning and 69.1MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:36:08,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.50ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 72.5MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:36:08,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.87ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 70.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:36:08,593 INFO L158 Benchmark]: Boogie Preprocessor took 25.69ms. Allocated memory is still 98.6MB. Free memory was 70.5MB in the beginning and 69.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:36:08,593 INFO L158 Benchmark]: RCFGBuilder took 484.09ms. Allocated memory is still 98.6MB. Free memory was 69.3MB in the beginning and 55.4MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 01:36:08,594 INFO L158 Benchmark]: CodeCheck took 79611.34ms. Allocated memory was 98.6MB in the beginning and 677.4MB in the end (delta: 578.8MB). Free memory was 55.0MB in the beginning and 514.0MB in the end (delta: -459.0MB). Peak memory consumption was 121.0MB. Max. memory is 16.1GB. [2021-11-23 01:36:08,595 INFO L158 Benchmark]: Witness Printer took 67.73ms. Allocated memory is still 677.4MB. Free memory was 514.0MB in the beginning and 510.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 01:36:08,598 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 2 procedures, 38 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 79.2s, OverallIterations: 25, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2008 SdHoareTripleChecker+Valid, 14.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1276 mSDsluCounter, 836 SdHoareTripleChecker+Invalid, 12.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 440 mSDsCounter, 1911 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8491 IncrementalHoareTripleChecker+Invalid, 10402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1911 mSolverCounterUnsat, 420 mSDtfsCounter, 8491 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4744 GetRequests, 4065 SyntacticMatches, 109 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154273 ImplicationChecksByTransitivity, 74.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 374 NumberOfCodeBlocks, 374 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 3978 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 25/135 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: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 41]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 34]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 34]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 98.6MB. Free memory was 69.1MB in the beginning and 69.1MB in the end (delta: 31.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.50ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 72.5MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.87ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 70.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.69ms. Allocated memory is still 98.6MB. Free memory was 70.5MB in the beginning and 69.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 484.09ms. Allocated memory is still 98.6MB. Free memory was 69.3MB in the beginning and 55.4MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 79611.34ms. Allocated memory was 98.6MB in the beginning and 677.4MB in the end (delta: 578.8MB). Free memory was 55.0MB in the beginning and 514.0MB in the end (delta: -459.0MB). Peak memory consumption was 121.0MB. Max. memory is 16.1GB. * Witness Printer took 67.73ms. Allocated memory is still 677.4MB. Free memory was 514.0MB in the beginning and 510.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-23 01:36:08,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeee0504-1556-4564-b78f-e0ba659ce421/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE