./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.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_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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_afd14343-cc62-4012-8e82-64f582e02c16/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 74289de26b6d11ce9d727281c5976611ee27d2e8 ............................................................................................................................................. 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_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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_afd14343-cc62-4012-8e82-64f582e02c16/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 74289de26b6d11ce9d727281c5976611ee27d2e8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:27:43,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:43,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:44,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:44,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:44,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:44,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:44,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:44,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:44,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:44,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:44,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:44,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:44,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:44,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:44,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:44,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:44,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:44,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:44,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:44,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:44,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:44,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:44,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:44,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:44,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:44,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:44,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:44,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:44,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:44,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:44,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:44,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:44,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:44,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:44,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:44,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:44,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:44,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:44,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:44,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:44,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:44,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:44,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:44,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:44,134 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:44,134 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:44,134 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:44,135 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:44,135 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:44,135 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:44,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:44,136 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:44,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:44,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:44,137 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:44,138 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:44,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:44,139 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:44,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:44,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:44,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:44,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:44,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:44,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:44,147 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:44,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:44,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:44,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:44,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:44,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:44,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:44,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:44,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:44,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:44,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:44,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:44,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:44,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:44,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:44,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:44,152 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_afd14343-cc62-4012-8e82-64f582e02c16/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74289de26b6d11ce9d727281c5976611ee27d2e8 [2021-10-11 02:27:44,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:44,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:44,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:44,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:44,458 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:44,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2021-10-11 02:27:44,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/de4fff93f/a8eebd6f43334819be84584d04efb133/FLAG302e35285 [2021-10-11 02:27:45,029 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:45,030 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2021-10-11 02:27:45,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/de4fff93f/a8eebd6f43334819be84584d04efb133/FLAG302e35285 [2021-10-11 02:27:45,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/de4fff93f/a8eebd6f43334819be84584d04efb133 [2021-10-11 02:27:45,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:45,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:45,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:45,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:45,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:45,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:45" (1/1) ... [2021-10-11 02:27:45,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9ed7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:45, skipping insertion in model container [2021-10-11 02:27:45,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:45" (1/1) ... [2021-10-11 02:27:45,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:45,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:45,714 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_afd14343-cc62-4012-8e82-64f582e02c16/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c[619,632] [2021-10-11 02:27:45,732 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:27:45,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:45,761 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 02:27:45,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66481c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:45, skipping insertion in model container [2021-10-11 02:27:45,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:45,762 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:27:45,764 INFO L168 Benchmark]: Toolchain (without parser) took 256.40 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 87.1 MB in the end (delta: -960.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,765 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:45,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.24 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 87.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,767 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 113.2 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.24 ms. Allocated memory is still 113.2 MB. Free memory was 85.9 MB in the beginning and 87.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 8.4 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 02:27:47,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:47,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:47,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:47,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:47,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:47,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:47,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:47,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:47,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:47,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:47,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:47,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:47,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:48,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:48,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:48,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:48,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:48,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:48,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:48,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:48,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:48,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:48,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:48,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:48,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:48,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:48,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:48,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:48,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:48,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:48,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:48,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:48,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:48,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:48,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:48,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:48,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:48,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:48,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:48,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:48,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:27:48,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:48,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:48,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:48,059 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:48,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:48,060 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:48,061 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:48,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:48,061 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:48,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:48,063 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:48,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:48,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:48,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:48,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:48,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:48,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:48,066 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:27:48,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:27:48,066 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:48,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:48,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:48,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:48,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:48,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:27:48,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:48,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:48,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:48,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:48,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:48,069 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:27:48,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:48,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:48,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:48,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:48,070 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_afd14343-cc62-4012-8e82-64f582e02c16/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74289de26b6d11ce9d727281c5976611ee27d2e8 [2021-10-11 02:27:48,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:48,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:48,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:48,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:48,458 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:48,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2021-10-11 02:27:48,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/47c2f867f/bf6bd012bb2e47f392d1877c1fe016f0/FLAG57870170d [2021-10-11 02:27:49,051 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:49,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2021-10-11 02:27:49,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/47c2f867f/bf6bd012bb2e47f392d1877c1fe016f0/FLAG57870170d [2021-10-11 02:27:49,423 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/data/47c2f867f/bf6bd012bb2e47f392d1877c1fe016f0 [2021-10-11 02:27:49,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:49,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:49,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:49,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:49,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:49,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e4c57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49, skipping insertion in model container [2021-10-11 02:27:49,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:49,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:49,598 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_afd14343-cc62-4012-8e82-64f582e02c16/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c[619,632] [2021-10-11 02:27:49,616 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:27:49,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:49,666 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:27:49,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:49,683 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_afd14343-cc62-4012-8e82-64f582e02c16/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c[619,632] [2021-10-11 02:27:49,702 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:27:49,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:49,721 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:49,731 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_afd14343-cc62-4012-8e82-64f582e02c16/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c[619,632] [2021-10-11 02:27:49,742 WARN L1501 CHandler]: Possible shadowing of function min [2021-10-11 02:27:49,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:49,774 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:49,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49 WrapperNode [2021-10-11 02:27:49,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:49,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:49,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:49,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:49,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:49,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:49,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:49,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:49,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... [2021-10-11 02:27:49,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:49,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:49,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:49,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:49,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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 02:27:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:27:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:27:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure min [2021-10-11 02:27:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2021-10-11 02:27:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:27:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:27:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-10-11 02:27:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-10-11 02:27:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:27:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure size [2021-10-11 02:27:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2021-10-11 02:27:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2021-10-11 02:27:50,027 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2021-10-11 02:27:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:27:50,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:50,711 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-11 02:27:50,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:50 BoogieIcfgContainer [2021-10-11 02:27:50,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:50,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:50,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:50,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:50,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:49" (1/3) ... [2021-10-11 02:27:50,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d07561a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:50, skipping insertion in model container [2021-10-11 02:27:50,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:49" (2/3) ... [2021-10-11 02:27:50,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d07561a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:50, skipping insertion in model container [2021-10-11 02:27:50,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:50" (3/3) ... [2021-10-11 02:27:50,720 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2021-10-11 02:27:50,734 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:50,737 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:27:50,747 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:27:50,771 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:50,772 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:50,772 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:50,772 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:50,772 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:50,772 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:50,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:50,772 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2021-10-11 02:27:50,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:27:50,811 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:50,812 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 02:27:50,812 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash 400471207, now seen corresponding path program 1 times [2021-10-11 02:27:50,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:50,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294699128] [2021-10-11 02:27:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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 02:27:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:50,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:27:50,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:51,038 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 02:27:51,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:51,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294699128] [2021-10-11 02:27:51,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:51,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:51,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094409166] [2021-10-11 02:27:51,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:51,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:51,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:51,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:51,059 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2021-10-11 02:27:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:51,107 INFO L93 Difference]: Finished difference Result 131 states and 170 transitions. [2021-10-11 02:27:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:51,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2021-10-11 02:27:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:51,121 INFO L225 Difference]: With dead ends: 131 [2021-10-11 02:27:51,121 INFO L226 Difference]: Without dead ends: 73 [2021-10-11 02:27:51,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-11 02:27:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-11 02:27:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-10-11 02:27:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2021-10-11 02:27:51,191 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 30 [2021-10-11 02:27:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:51,193 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2021-10-11 02:27:51,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2021-10-11 02:27:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:27:51,199 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:51,199 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 02:27:51,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:27:51,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:51,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:51,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1101535785, now seen corresponding path program 1 times [2021-10-11 02:27:51,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:51,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615752934] [2021-10-11 02:27:51,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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 02:27:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:51,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:27:51,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:51,660 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 02:27:51,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:51,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615752934] [2021-10-11 02:27:51,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:51,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:27:51,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464071736] [2021-10-11 02:27:51,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:51,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:51,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:51,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:51,671 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand 5 states. [2021-10-11 02:27:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:51,728 INFO L93 Difference]: Finished difference Result 125 states and 154 transitions. [2021-10-11 02:27:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:51,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-10-11 02:27:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:51,735 INFO L225 Difference]: With dead ends: 125 [2021-10-11 02:27:51,736 INFO L226 Difference]: Without dead ends: 75 [2021-10-11 02:27:51,737 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 02:27:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-11 02:27:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-11 02:27:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 02:27:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2021-10-11 02:27:51,748 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 30 [2021-10-11 02:27:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:51,748 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2021-10-11 02:27:51,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2021-10-11 02:27:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-11 02:27:51,750 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:51,751 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 02:27:51,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:27:51,966 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1481862926, now seen corresponding path program 1 times [2021-10-11 02:27:51,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:51,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680895010] [2021-10-11 02:27:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:52,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:27:52,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:52,265 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 02:27:52,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:52,504 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 02:27:52,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680895010] [2021-10-11 02:27:52,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428530309] [2021-10-11 02:27:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:52,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:27:52,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:52,774 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 02:27:52,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:53,066 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 02:27:53,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579247382] [2021-10-11 02:27:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:53,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:27:53,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:53,326 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 02:27:53,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:53,553 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 02:27:53,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:27:53,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 8 [2021-10-11 02:27:53,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535832901] [2021-10-11 02:27:53,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:53,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:53,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:53,560 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand 8 states. [2021-10-11 02:27:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:53,798 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2021-10-11 02:27:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:53,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2021-10-11 02:27:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:53,808 INFO L225 Difference]: With dead ends: 133 [2021-10-11 02:27:53,808 INFO L226 Difference]: Without dead ends: 77 [2021-10-11 02:27:53,809 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 02:27:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-11 02:27:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-11 02:27:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-10-11 02:27:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2021-10-11 02:27:53,825 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 42 [2021-10-11 02:27:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:53,826 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2021-10-11 02:27:53,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2021-10-11 02:27:53,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:27:53,828 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:53,828 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 02:27:54,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:54,436 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:54,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:54,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1950591435, now seen corresponding path program 1 times [2021-10-11 02:27:54,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:54,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901756018] [2021-10-11 02:27:54,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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 02:27:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:54,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:27:54,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:54,703 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 02:27:54,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:54,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901756018] [2021-10-11 02:27:54,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:54,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:27:54,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337061425] [2021-10-11 02:27:54,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:54,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:54,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:54,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:54,706 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 8 states. [2021-10-11 02:27:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:54,901 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2021-10-11 02:27:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:27:54,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2021-10-11 02:27:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:54,905 INFO L225 Difference]: With dead ends: 133 [2021-10-11 02:27:54,905 INFO L226 Difference]: Without dead ends: 79 [2021-10-11 02:27:54,906 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 02:27:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-11 02:27:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-10-11 02:27:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-10-11 02:27:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2021-10-11 02:27:54,918 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 52 [2021-10-11 02:27:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:54,918 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2021-10-11 02:27:54,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2021-10-11 02:27:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-11 02:27:54,921 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:54,921 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 02:27:55,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:27:55,137 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:55,138 INFO L82 PathProgramCache]: Analyzing trace with hash 989968802, now seen corresponding path program 1 times [2021-10-11 02:27:55,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:55,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781297691] [2021-10-11 02:27:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/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 02:27:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:55,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:27:55,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:55,475 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 02:27:55,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:55,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781297691] [2021-10-11 02:27:55,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:55,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 02:27:55,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997570916] [2021-10-11 02:27:55,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:55,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:55,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:55,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:55,479 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 8 states. [2021-10-11 02:27:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:56,019 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2021-10-11 02:27:56,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:27:56,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2021-10-11 02:27:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:56,022 INFO L225 Difference]: With dead ends: 128 [2021-10-11 02:27:56,022 INFO L226 Difference]: Without dead ends: 81 [2021-10-11 02:27:56,023 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 02:27:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-11 02:27:56,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-10-11 02:27:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-10-11 02:27:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2021-10-11 02:27:56,036 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 65 [2021-10-11 02:27:56,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:56,037 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2021-10-11 02:27:56,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:56,038 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2021-10-11 02:27:56,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:27:56,041 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:56,041 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 02:27:56,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:27:56,260 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1197061387, now seen corresponding path program 1 times [2021-10-11 02:27:56,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:56,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865952546] [2021-10-11 02:27:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:56,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:56,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:56,965 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:27:56,965 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:57,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:27:57,210 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,211 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,212 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,212 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,227 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,240 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,240 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,240 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,240 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,241 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,241 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,241 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:57 BoogieIcfgContainer [2021-10-11 02:27:57,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:57,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:57,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:57,303 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:57,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:50" (3/4) ... [2021-10-11 02:27:57,305 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:27:57,311 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,311 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,312 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,312 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,313 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,313 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,313 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,314 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,314 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,314 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,314 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,314 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-10-11 02:27:57,401 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afd14343-cc62-4012-8e82-64f582e02c16/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:57,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:57,403 INFO L168 Benchmark]: Toolchain (without parser) took 7973.85 ms. Allocated memory was 67.1 MB in the beginning and 123.7 MB in the end (delta: 56.6 MB). Free memory was 49.8 MB in the beginning and 78.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,403 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 67.1 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:57,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.86 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 46.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.02 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 44.9 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:57,405 INFO L168 Benchmark]: Boogie Preprocessor took 70.13 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 42.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,406 INFO L168 Benchmark]: RCFGBuilder took 785.47 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 42.7 MB in the beginning and 44.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,406 INFO L168 Benchmark]: TraceAbstraction took 6588.14 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 43.6 MB in the beginning and 85.0 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:57,407 INFO L168 Benchmark]: Witness Printer took 98.31 ms. Allocated memory is still 123.7 MB. Free memory was 85.0 MB in the beginning and 78.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 67.1 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.86 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 46.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.02 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 44.9 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.13 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 42.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 785.47 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 42.7 MB in the beginning and 44.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6588.14 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 43.6 MB in the beginning and 85.0 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 98.31 ms. Allocated memory is still 123.7 MB. Free memory was 85.0 MB in the beginning and 78.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 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: [L105] 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))={3:0}, n={3:0}, 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))={3:0}, n={3:0}, nondet_tree()={0:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={3:0}, malloc(sizeof(struct node))={3:0}, n={3:0}] [L105] RET nondet_tree() [L83] CALL, EXPR min(t) VAL [n={3:0}] [L37] COND FALSE !(!n) [L40] EXPR n->left VAL [n={3:0}, n={3:0}, n->left={0:0}] [L40] 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}] [L40] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={3:0}, n={3:0}, n->left={0:0}] [L40] int a = min(n->left); [L41] EXPR n->right VAL [a=2147483647, n={3:0}, n={3:0}, n->right={0:0}] [L41] 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}] [L41] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={3:0}, n={3:0}, n->right={0:0}] [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={3:0}, n={3:0}] [L83] RET, EXPR min(t) [L83] int a = min(t); [L84] int b; [L86] CALL, EXPR size(t) VAL [t={3:0}] [L78] COND FALSE !(!t) [L79] EXPR t->left VAL [t={3:0}, t={3:0}, t->left={0:0}] [L79] CALL, EXPR size(t->left) VAL [t={0:0}] [L78] COND TRUE !t [L78] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L79] RET, EXPR size(t->left) VAL [size(t->left)=0, t={3:0}, t={3:0}, t->left={0:0}] [L79] EXPR t->right VAL [size(t->left)=0, t={3:0}, t={3:0}, t->left={0:0}, t->right={0:0}] [L79] CALL, EXPR size(t->right) VAL [t={0:0}] [L78] COND TRUE !t [L78] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L79] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={3:0}, t={3:0}, t->left={0:0}, t->right={0:0}] [L79] return size(t->left) + size(t->right) + 1; [L86] RET, EXPR size(t) [L86] int n = size(t); [L10] COND FALSE !(!cond) [L88] int *x = calloc(n, sizeof(int)); [L89] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={5:0}, t={3:0}] [L67] COND FALSE !(!t) [L70] EXPR t->left VAL [\old(i)=1, a={5:0}, a={5:0}, i=1, t={3:0}, t={3:0}, t->left={0:0}] [L70] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={5:0}, t={0:0}] [L67] COND TRUE !t [L68] return i; VAL [\old(i)=1, \result=1, a={5:0}, a={5:0}, i=1, t={0:0}, t={0:0}] [L70] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={5:0}, a={5:0}, i=1, t={3:0}, t={3:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L70] i = tree_inorder(t->left, a, i) [L71] EXPR i++ [L71] EXPR t->data [L71] a[i++] = t->data [L72] EXPR t->right VAL [\old(i)=1, a={5:0}, a={5:0}, i=2, t={3:0}, t={3:0}, t->right={0:0}] [L72] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={5:0}, t={0:0}] [L67] COND TRUE !t [L68] return i; VAL [\old(i)=2, \result=2, a={5:0}, a={5:0}, i=2, t={0:0}, t={0:0}] [L72] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={5:0}, a={5:0}, i=2, t={3:0}, t={3:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L72] i = tree_inorder(t->right, a, i) [L73] return i; VAL [\old(i)=1, \result=2, a={5:0}, a={5:0}, i=2, t={3:0}, t={3:0}] [L89] RET tree_inorder(t, x, n) [L90] x[0] [L16] COND TRUE !cond [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 78 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 433 SDtfs, 158 SDslu, 1516 SDs, 0 SdLazy, 237 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 46738 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1067 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 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...