./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3996209b60f87d3e4d0d43d86633911b8e11add8 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3996209b60f87d3e4d0d43d86633911b8e11add8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:56,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:56,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:56,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:56,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:56,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:56,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:56,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:56,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:56,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:56,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:56,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:56,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:56,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:56,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:56,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:56,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:56,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:56,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:56,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:56,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:56,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:56,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:56,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:56,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:56,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:56,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:56,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:56,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:56,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:56,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:56,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:56,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:56,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:56,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:56,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:56,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:56,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:56,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:56,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:56,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:56,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:56,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:56,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:56,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:56,977 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:56,977 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:56,977 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:56,978 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:56,978 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:56,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:56,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:56,979 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:56,979 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:56,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:56,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:56,980 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:56,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:56,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:56,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:56,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:56,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:56,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:56,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:56,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:56,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:56,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:56,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:56,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:56,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:56,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:56,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:56,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:56,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:56,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:56,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:56,987 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:56,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:56,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:56,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:56,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:56,988 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2021-10-11 02:23:57,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:57,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:57,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:57,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:57,290 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:57,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-11 02:23:57,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/381a1833b/04969faf13dd4fa899a14b075547b296/FLAGdc999abb6 [2021-10-11 02:23:57,794 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:57,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-11 02:23:57,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/381a1833b/04969faf13dd4fa899a14b075547b296/FLAGdc999abb6 [2021-10-11 02:23:58,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/381a1833b/04969faf13dd4fa899a14b075547b296 [2021-10-11 02:23:58,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:58,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:58,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:58,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:58,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:58,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6316c0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58, skipping insertion in model container [2021-10-11 02:23:58,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:58" (1/1) ... [2021-10-11 02:23:58,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:58,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:58,378 WARN L226 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_3ea06277-8bed-4eba-bc55-e43115e1565c/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-11 02:23:58,401 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:23:58,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:58,432 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-11 02:23:58,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7582facf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:58, skipping insertion in model container [2021-10-11 02:23:58,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:58,434 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:23:58,436 INFO L168 Benchmark]: Toolchain (without parser) took 261.32 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.7 MB in the beginning and 86.5 MB in the end (delta: -32.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:58,438 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 90.2 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:58,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.37 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 86.5 MB in the end (delta: -33.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:58,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 90.2 MB. Free memory was 70.7 MB in the beginning and 70.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.37 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.5 MB in the beginning and 86.5 MB in the end (delta: -33.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 28]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:00,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:00,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:00,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:00,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:00,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:00,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:00,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:00,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:00,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:00,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:00,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:00,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:00,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:00,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:00,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:00,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:00,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:00,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:00,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:00,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:00,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:00,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:00,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:00,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:00,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:00,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:00,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:00,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:00,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:00,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:00,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:00,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:00,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:00,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:00,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:00,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:00,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:00,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:00,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:00,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:00,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:24:00,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:00,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:00,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:00,788 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:00,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:00,789 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:00,789 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:00,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:00,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:00,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:00,792 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:00,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:00,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:00,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:00,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:00,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:00,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:00,794 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:24:00,794 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:24:00,795 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:00,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:00,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:00,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:00,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:00,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:24:00,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:00,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:00,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:00,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:00,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:00,798 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:24:00,798 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:24:00,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:00,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:00,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:00,799 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2021-10-11 02:24:01,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:01,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:01,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:01,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:01,211 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:01,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-11 02:24:01,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/07ad6d377/214ec61ecc214b7ea39742660d9f4739/FLAG396f5b121 [2021-10-11 02:24:01,859 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:01,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-11 02:24:01,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/07ad6d377/214ec61ecc214b7ea39742660d9f4739/FLAG396f5b121 [2021-10-11 02:24:02,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/data/07ad6d377/214ec61ecc214b7ea39742660d9f4739 [2021-10-11 02:24:02,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:02,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:02,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:02,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:02,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:02,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1a75d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02, skipping insertion in model container [2021-10-11 02:24:02,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:02,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:02,378 WARN L226 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_3ea06277-8bed-4eba-bc55-e43115e1565c/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-11 02:24:02,398 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:24:02,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:02,430 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:24:02,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:02,440 WARN L226 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_3ea06277-8bed-4eba-bc55-e43115e1565c/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-11 02:24:02,460 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:24:02,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:02,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:02,538 WARN L226 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_3ea06277-8bed-4eba-bc55-e43115e1565c/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-11 02:24:02,557 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:24:02,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:02,596 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:02,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02 WrapperNode [2021-10-11 02:24:02,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:02,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:02,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:02,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:02,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:02,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:02,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:02,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:02,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... [2021-10-11 02:24:02,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:02,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:02,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:02,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:02,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2021-10-11 02:24:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:24:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:24:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure min [2021-10-11 02:24:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2021-10-11 02:24:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:24:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:24:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-10-11 02:24:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-10-11 02:24:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:24:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure size [2021-10-11 02:24:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2021-10-11 02:24:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:02,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:02,816 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2021-10-11 02:24:02,817 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2021-10-11 02:24:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:02,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:24:03,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:03,867 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-11 02:24:03,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:03 BoogieIcfgContainer [2021-10-11 02:24:03,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:03,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:03,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:03,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:03,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:02" (1/3) ... [2021-10-11 02:24:03,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293cff1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:03, skipping insertion in model container [2021-10-11 02:24:03,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:02" (2/3) ... [2021-10-11 02:24:03,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293cff1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:03, skipping insertion in model container [2021-10-11 02:24:03,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:03" (3/3) ... [2021-10-11 02:24:03,877 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2021-10-11 02:24:03,892 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:03,895 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:24:03,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:24:03,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:03,930 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:03,931 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:03,931 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:03,931 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:03,931 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:03,931 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:03,931 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-10-11 02:24:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:24:03,955 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:03,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:03,956 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:03,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:03,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1629763355, now seen corresponding path program 1 times [2021-10-11 02:24:03,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:03,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814052681] [2021-10-11 02:24:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:04,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:24:04,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:04,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:04,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814052681] [2021-10-11 02:24:04,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:04,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:24:04,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140295267] [2021-10-11 02:24:04,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:24:04,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:04,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:24:04,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:04,336 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 5 states. [2021-10-11 02:24:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:04,397 INFO L93 Difference]: Finished difference Result 137 states and 183 transitions. [2021-10-11 02:24:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:24:04,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-10-11 02:24:04,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:04,410 INFO L225 Difference]: With dead ends: 137 [2021-10-11 02:24:04,410 INFO L226 Difference]: Without dead ends: 76 [2021-10-11 02:24:04,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:24:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-11 02:24:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-11 02:24:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 02:24:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-10-11 02:24:04,482 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 30 [2021-10-11 02:24:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:04,482 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-10-11 02:24:04,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:24:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-10-11 02:24:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-11 02:24:04,491 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:04,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:04,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:24:04,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1217815678, now seen corresponding path program 1 times [2021-10-11 02:24:04,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:04,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424407673] [2021-10-11 02:24:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:04,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:24:04,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:05,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:05,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424407673] [2021-10-11 02:24:05,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [377167176] [2021-10-11 02:24:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:24:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:05,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:24:05,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:05,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:05,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248067794] [2021-10-11 02:24:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:06,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:24:06,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:06,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:24:06,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:24:06,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 8 [2021-10-11 02:24:06,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756462109] [2021-10-11 02:24:06,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:24:06,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:24:06,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:24:06,350 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 8 states. [2021-10-11 02:24:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:06,589 INFO L93 Difference]: Finished difference Result 134 states and 169 transitions. [2021-10-11 02:24:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:24:06,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2021-10-11 02:24:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:06,596 INFO L225 Difference]: With dead ends: 134 [2021-10-11 02:24:06,599 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 02:24:06,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:24:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 02:24:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-11 02:24:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-10-11 02:24:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-10-11 02:24:06,623 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 42 [2021-10-11 02:24:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:06,624 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-10-11 02:24:06,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:24:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-10-11 02:24:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:24:06,635 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:06,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:07,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3,4 cvc4 --incremental --print-success --lang smt,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:07,243 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:07,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1468472769, now seen corresponding path program 1 times [2021-10-11 02:24:07,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:07,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116751144] [2021-10-11 02:24:07,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:07,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:24:07,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-11 02:24:07,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:07,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116751144] [2021-10-11 02:24:07,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:07,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:24:07,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254163249] [2021-10-11 02:24:07,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:24:07,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:24:07,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:24:07,523 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 8 states. [2021-10-11 02:24:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:07,727 INFO L93 Difference]: Finished difference Result 134 states and 169 transitions. [2021-10-11 02:24:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:07,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2021-10-11 02:24:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:07,730 INFO L225 Difference]: With dead ends: 134 [2021-10-11 02:24:07,731 INFO L226 Difference]: Without dead ends: 80 [2021-10-11 02:24:07,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-11 02:24:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-11 02:24:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-10-11 02:24:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2021-10-11 02:24:07,745 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 52 [2021-10-11 02:24:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:07,746 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2021-10-11 02:24:07,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:24:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2021-10-11 02:24:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-11 02:24:07,747 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:07,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:07,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:24:07,963 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:07,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2102248142, now seen corresponding path program 1 times [2021-10-11 02:24:07,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:07,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596261799] [2021-10-11 02:24:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:08,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:24:08,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:24:08,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:24:08,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596261799] [2021-10-11 02:24:08,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:08,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:24:08,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635471095] [2021-10-11 02:24:08,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:24:08,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:24:08,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:24:08,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:24:08,312 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand 8 states. [2021-10-11 02:24:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:08,785 INFO L93 Difference]: Finished difference Result 129 states and 164 transitions. [2021-10-11 02:24:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:24:08,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2021-10-11 02:24:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:08,788 INFO L225 Difference]: With dead ends: 129 [2021-10-11 02:24:08,789 INFO L226 Difference]: Without dead ends: 82 [2021-10-11 02:24:08,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:24:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-11 02:24:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-10-11 02:24:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-10-11 02:24:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2021-10-11 02:24:08,802 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 65 [2021-10-11 02:24:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:08,802 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2021-10-11 02:24:08,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:24:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2021-10-11 02:24:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:24:08,804 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:08,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:09,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:24:09,019 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:09,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:09,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1113424351, now seen corresponding path program 1 times [2021-10-11 02:24:09,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:24:09,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413172427] [2021-10-11 02:24:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:24:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:09,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:09,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:09,844 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:24:09,845 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:10,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:24:10,091 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,092 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,093 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,093 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,098 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,099 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,099 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,100 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,100 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,100 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,101 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,101 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:10 BoogieIcfgContainer [2021-10-11 02:24:10,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:10,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:10,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:10,155 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:10,155 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:03" (3/4) ... [2021-10-11 02:24:10,157 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:24:10,169 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,170 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,171 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,171 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,172 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,173 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,173 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,173 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,173 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,174 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,174 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,174 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:24:10,270 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ea06277-8bed-4eba-bc55-e43115e1565c/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:10,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:10,272 INFO L168 Benchmark]: Toolchain (without parser) took 8081.47 ms. Allocated memory was 52.4 MB in the beginning and 121.6 MB in the end (delta: 69.2 MB). Free memory was 29.2 MB in the beginning and 51.7 MB in the end (delta: -22.5 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:10,272 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:10,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.69 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 46.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:10,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.70 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 44.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:10,273 INFO L168 Benchmark]: Boogie Preprocessor took 52.19 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 42.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:10,274 INFO L168 Benchmark]: RCFGBuilder took 1150.85 ms. Allocated memory is still 65.0 MB. Free memory was 42.4 MB in the beginning and 36.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:10,274 INFO L168 Benchmark]: TraceAbstraction took 6283.32 ms. Allocated memory was 65.0 MB in the beginning and 121.6 MB in the end (delta: 56.6 MB). Free memory was 35.9 MB in the beginning and 58.0 MB in the end (delta: -22.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:10,275 INFO L168 Benchmark]: Witness Printer took 115.88 ms. Allocated memory is still 121.6 MB. Free memory was 58.0 MB in the beginning and 51.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:10,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.69 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.0 MB in the beginning and 46.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.70 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 44.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.19 ms. Allocated memory is still 65.0 MB. Free memory was 44.5 MB in the beginning and 42.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1150.85 ms. Allocated memory is still 65.0 MB. Free memory was 42.4 MB in the beginning and 36.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6283.32 ms. Allocated memory was 65.0 MB in the beginning and 121.6 MB in the end (delta: 56.6 MB). Free memory was 35.9 MB in the beginning and 58.0 MB in the end (delta: -22.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * Witness Printer took 115.88 ms. Allocated memory is still 121.6 MB. Free memory was 58.0 MB in the beginning and 51.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L110] CALL nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={5:0}, n={5:0}, nondet_tree()={0:0}] [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L31] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={5:0}, n={5:0}, nondet_tree()={0:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={5:0}, malloc(sizeof(struct node))={5:0}, n={5:0}] [L110] RET nondet_tree() [L86] CALL, EXPR min(t) VAL [n={5:0}] [L37] COND FALSE !(!n) [L40] EXPR n->data [L40] int a = n->data; [L41] EXPR n->left VAL [a=2147483647, n={5:0}, n={5:0}, n->left={0:0}] [L41] CALL, EXPR min(n->left) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L41] RET, EXPR min(n->left) VAL [a=2147483647, min(n->left)=2147483647, n={5:0}, n={5:0}, n->left={0:0}] [L41] int b = min(n->left); [L42] EXPR n->right VAL [a=2147483647, b=2147483647, n={5:0}, n={5:0}, n->right={0:0}] [L42] CALL, EXPR min(n->right) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L42] RET, EXPR min(n->right) VAL [a=2147483647, b=2147483647, min(n->right)=2147483647, n={5:0}, n={5:0}, n->right={0:0}] [L42] int c = min(n->right); [L43] COND TRUE b <= a && b <= c [L43] return b; VAL [\result=2147483647, a=2147483647, b=2147483647, c=2147483647, n={5:0}, n={5:0}] [L86] RET, EXPR min(t) [L86] int a = min(t); [L87] int b; [L89] CALL, EXPR size(t) VAL [t={5:0}] [L81] COND FALSE !(!t) [L82] EXPR t->left VAL [t={5:0}, t={5:0}, t->left={0:0}] [L82] CALL, EXPR size(t->left) VAL [t={0:0}] [L81] COND TRUE !t [L81] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L82] RET, EXPR size(t->left) VAL [size(t->left)=0, t={5:0}, t={5:0}, t->left={0:0}] [L82] EXPR t->right VAL [size(t->left)=0, t={5:0}, t={5:0}, t->left={0:0}, t->right={0:0}] [L82] CALL, EXPR size(t->right) VAL [t={0:0}] [L81] COND TRUE !t [L81] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L82] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={5:0}, t={5:0}, t->left={0:0}, t->right={0:0}] [L82] return size(t->left) + size(t->right) + 1; [L89] RET, EXPR size(t) [L89] int n = size(t); [L9] COND FALSE !(!cond) [L91] int *x = calloc(n, sizeof(int)); [L92] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={3:0}, t={5:0}] [L70] COND FALSE !(!t) [L73] EXPR t->left VAL [\old(i)=1, a={3:0}, a={3:0}, i=1, t={5:0}, t={5:0}, t->left={0:0}] [L73] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={3:0}, t={0:0}] [L70] COND TRUE !t [L71] return i; VAL [\old(i)=1, \result=1, a={3:0}, a={3:0}, i=1, t={0:0}, t={0:0}] [L73] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={3:0}, a={3:0}, i=1, t={5:0}, t={5:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L73] i = tree_inorder(t->left, a, i) [L74] EXPR i++ [L74] EXPR t->data [L74] a[i++] = t->data [L75] EXPR t->right VAL [\old(i)=1, a={3:0}, a={3:0}, i=2, t={5:0}, t={5:0}, t->right={0:0}] [L75] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={3:0}, t={0:0}] [L70] COND TRUE !t [L71] return i; VAL [\old(i)=2, \result=2, a={3:0}, a={3:0}, i=2, t={0:0}, t={0:0}] [L75] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={3:0}, a={3:0}, i=2, t={5:0}, t={5:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L75] i = tree_inorder(t->right, a, i) [L76] return i; VAL [\old(i)=1, \result=2, a={3:0}, a={3:0}, i=2, t={5:0}, t={5:0}] [L92] RET tree_inorder(t, x, n) [L93] x[0] [L16] COND TRUE !cond [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 167 SDslu, 1495 SDs, 0 SdLazy, 232 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 401 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 45897 SizeOfPredicates, 36 NumberOfNonLiveVariables, 953 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 114/126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...