./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 ................................................................................................................................... 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_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:33:38,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:33:38,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:33:38,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:33:38,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:33:38,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:33:38,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:33:38,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:33:38,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:33:38,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:33:38,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:33:38,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:33:38,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:33:38,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:33:38,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:33:38,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:33:38,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:33:38,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:33:38,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:33:38,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:33:38,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:33:38,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:33:38,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:33:38,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:33:38,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:33:38,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:33:38,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:33:38,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:33:38,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:33:38,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:33:38,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:33:38,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:33:38,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:33:38,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:33:38,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:33:38,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:33:38,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:33:38,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:33:38,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:33:38,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:33:38,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:33:38,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:33:38,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:33:38,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:33:38,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:33:38,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:33:38,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:33:38,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:33:38,976 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:33:38,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:33:38,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:33:38,977 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:33:38,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:33:38,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:33:38,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:33:38,977 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:33:38,978 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:33:38,978 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:33:38,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:33:38,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:33:38,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:33:38,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:33:38,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:33:38,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:33:38,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:33:38,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:33:38,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:33:38,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:33:38,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:33:38,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:33:38,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:33:38,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2021-10-13 00:33:39,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:33:39,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:33:39,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:33:39,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:33:39,278 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:33:39,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-10-13 00:33:39,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/433a6de15/180f765a1c654013b9824a3f0584d6bf/FLAG7e6da4f6c [2021-10-13 00:33:39,909 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:33:39,910 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-10-13 00:33:39,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/433a6de15/180f765a1c654013b9824a3f0584d6bf/FLAG7e6da4f6c [2021-10-13 00:33:40,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/433a6de15/180f765a1c654013b9824a3f0584d6bf [2021-10-13 00:33:40,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:33:40,199 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:33:40,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:33:40,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:33:40,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:33:40,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:33:40" (1/1) ... [2021-10-13 00:33:40,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a57516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:40, skipping insertion in model container [2021-10-13 00:33:40,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:33:40" (1/1) ... [2021-10-13 00:33:40,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:33:40,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:33:40,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:33:40,597 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) [2021-10-13 00:33:40,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6823de92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:40, skipping insertion in model container [2021-10-13 00:33:40,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:33:40,599 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 00:33:40,601 INFO L168 Benchmark]: Toolchain (without parser) took 400.35 ms. Allocated memory is still 86.0 MB. Free memory was 47.6 MB in the beginning and 59.3 MB in the end (delta: -11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:40,603 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 86.0 MB. Free memory is still 64.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:33:40,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.74 ms. Allocated memory is still 86.0 MB. Free memory was 47.4 MB in the beginning and 59.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:40,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 86.0 MB. Free memory is still 64.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.74 ms. Allocated memory is still 86.0 MB. Free memory was 47.4 MB in the beginning and 59.3 MB in the end (delta: -11.9 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: 535]: 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 0.2.1-dev-4e77c04 [2021-10-13 00:33:42,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:33:42,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:33:42,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:33:42,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:33:42,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:33:42,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:33:42,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:33:42,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:33:42,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:33:42,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:33:42,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:33:42,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:33:42,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:33:42,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:33:42,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:33:42,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:33:42,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:33:42,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:33:42,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:33:42,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:33:42,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:33:42,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:33:42,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:33:42,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:33:42,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:33:42,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:33:42,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:33:42,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:33:42,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:33:42,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:33:42,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:33:42,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:33:42,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:33:42,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:33:42,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:33:42,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:33:42,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:33:42,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:33:42,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:33:42,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:33:42,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:33:43,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:33:43,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:33:43,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:33:43,038 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:33:43,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:33:43,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:33:43,040 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:33:43,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:33:43,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:33:43,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:33:43,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:33:43,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:33:43,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:33:43,043 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:33:43,043 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:33:43,043 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:33:43,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:33:43,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:33:43,044 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:33:43,044 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:33:43,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:33:43,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:33:43,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:33:43,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:33:43,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:33:43,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:33:43,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:33:43,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:33:43,047 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:33:43,047 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:33:43,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:33:43,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:33:43,048 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_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2021-10-13 00:33:43,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:33:43,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:33:43,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:33:43,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:33:43,425 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:33:43,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-10-13 00:33:43,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/c72a11c34/1b7648f64e07423280f296477560d5ab/FLAG3ea22fd37 [2021-10-13 00:33:44,149 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:33:44,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2021-10-13 00:33:44,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/c72a11c34/1b7648f64e07423280f296477560d5ab/FLAG3ea22fd37 [2021-10-13 00:33:44,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/data/c72a11c34/1b7648f64e07423280f296477560d5ab [2021-10-13 00:33:44,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:33:44,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:33:44,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:33:44,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:33:44,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:33:44,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:44,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1136f70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44, skipping insertion in model container [2021-10-13 00:33:44,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:44,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:33:44,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:33:44,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:33:44,803 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 00:33:44,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:33:44,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:33:44,870 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:33:44,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:33:44,973 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:33:44,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44 WrapperNode [2021-10-13 00:33:44,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:33:44,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:33:44,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:33:44,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:33:44,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:44,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:45,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:45,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:45,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:45,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:45,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:45,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:33:45,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:33:45,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:33:45,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:33:45,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (1/1) ... [2021-10-13 00:33:45,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:33:45,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:33:45,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:33:45,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:33:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:33:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:33:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:33:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:33:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:33:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:33:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:33:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:33:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure knapsack [2021-10-13 00:33:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:33:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:33:45,162 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:33:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:33:45,163 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:33:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:33:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:33:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:33:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:33:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:33:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:33:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:33:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:33:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:33:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:33:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:33:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:33:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:33:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:33:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:33:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:33:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:33:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:33:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:33:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:33:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:33:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:33:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:33:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:33:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:33:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:33:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:33:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:33:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:33:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:33:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:33:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:33:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:33:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:33:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:33:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:33:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:33:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:33:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:33:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:33:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:33:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:33:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:33:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:33:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:33:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:33:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:33:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:33:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:33:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:33:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:33:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:33:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:33:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:33:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:33:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:33:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:33:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:33:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:33:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:33:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:33:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:33:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:33:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:33:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:33:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:33:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:33:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:33:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:33:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:33:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:33:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:33:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:33:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:33:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:33:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:33:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:33:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:33:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:33:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:33:45,197 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:33:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:33:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:33:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:33:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:33:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:33:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure knapsack [2021-10-13 00:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:33:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:33:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:33:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:33:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:33:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:33:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:33:46,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:33:46,090 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 00:33:46,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:33:46 BoogieIcfgContainer [2021-10-13 00:33:46,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:33:46,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:33:46,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:33:46,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:33:46,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:33:44" (1/3) ... [2021-10-13 00:33:46,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fd8eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:33:46, skipping insertion in model container [2021-10-13 00:33:46,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:33:44" (2/3) ... [2021-10-13 00:33:46,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fd8eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:33:46, skipping insertion in model container [2021-10-13 00:33:46,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:33:46" (3/3) ... [2021-10-13 00:33:46,115 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2021-10-13 00:33:46,120 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:33:46,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-10-13 00:33:46,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:33:46,196 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:33:46,196 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-10-13 00:33:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 39 states have (on average 2.0) internal successors, (78), 66 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 00:33:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:33:46,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:46,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:46,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 22 more)] === [2021-10-13 00:33:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:46,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1775609137, now seen corresponding path program 1 times [2021-10-13 00:33:46,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:33:46,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605996718] [2021-10-13 00:33:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:46,235 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:33:46,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:33:46,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:33:46,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:33:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:33:46,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:33:46,649 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-13 00:33:46,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 50 [2021-10-13 00:33:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:46,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:33:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:46,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:33:46,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605996718] [2021-10-13 00:33:46,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605996718] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:46,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:46,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 00:33:46,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15176268] [2021-10-13 00:33:46,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:33:46,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:33:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:33:47,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:33:47,018 INFO L87 Difference]: Start difference. First operand has 73 states, 39 states have (on average 2.0) internal successors, (78), 66 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:33:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:47,278 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-13 00:33:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:33:47,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 00:33:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:47,288 INFO L225 Difference]: With dead ends: 72 [2021-10-13 00:33:47,289 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 00:33:47,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:33:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 00:33:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-13 00:33:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 38 states have (on average 1.868421052631579) internal successors, (71), 63 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:33:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2021-10-13 00:33:47,326 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 11 [2021-10-13 00:33:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:47,327 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2021-10-13 00:33:47,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:33:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2021-10-13 00:33:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:33:47,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:47,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:47,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:33:47,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:33:47,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 22 more)] === [2021-10-13 00:33:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:47,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1775609136, now seen corresponding path program 1 times [2021-10-13 00:33:47,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:33:47,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203580754] [2021-10-13 00:33:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:47,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:33:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:33:47,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:33:47,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:33:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:47,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:33:47,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:33:47,867 INFO L354 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2021-10-13 00:33:47,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 43 [2021-10-13 00:33:47,881 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 00:33:47,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2021-10-13 00:33:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:48,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:33:48,315 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 00:33:48,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 70 [2021-10-13 00:33:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:48,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:33:48,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203580754] [2021-10-13 00:33:48,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203580754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:48,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:48,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 00:33:48,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608005212] [2021-10-13 00:33:48,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:33:48,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:33:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:33:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:33:48,432 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:33:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:49,580 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2021-10-13 00:33:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:33:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 00:33:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:49,586 INFO L225 Difference]: With dead ends: 133 [2021-10-13 00:33:49,586 INFO L226 Difference]: Without dead ends: 133 [2021-10-13 00:33:49,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 358.1ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:33:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-13 00:33:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 75. [2021-10-13 00:33:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 69 states have internal predecessors, (79), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 00:33:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-10-13 00:33:49,601 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 11 [2021-10-13 00:33:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:49,601 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-10-13 00:33:49,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:33:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-10-13 00:33:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:33:49,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:49,602 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:49,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 00:33:49,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:33:49,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 22 more)] === [2021-10-13 00:33:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:49,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1773762094, now seen corresponding path program 1 times [2021-10-13 00:33:49,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:33:49,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971945865] [2021-10-13 00:33:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:49,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:33:49,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:33:49,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:33:49,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:33:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:33:49,960 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:33:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:33:50,019 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:33:50,020 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:33:50,021 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:33:50,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:33:50,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-13 00:33:50,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-13 00:33:50,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-13 00:33:50,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-13 00:33:50,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:33:50,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr0REQUIRES_VIOLATION [2021-10-13 00:33:50,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr1REQUIRES_VIOLATION [2021-10-13 00:33:50,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr2REQUIRES_VIOLATION [2021-10-13 00:33:50,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr3REQUIRES_VIOLATION [2021-10-13 00:33:50,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr4REQUIRES_VIOLATION [2021-10-13 00:33:50,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr5REQUIRES_VIOLATION [2021-10-13 00:33:50,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr6REQUIRES_VIOLATION [2021-10-13 00:33:50,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr7REQUIRES_VIOLATION [2021-10-13 00:33:50,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr8REQUIRES_VIOLATION [2021-10-13 00:33:50,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr9REQUIRES_VIOLATION [2021-10-13 00:33:50,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr10REQUIRES_VIOLATION [2021-10-13 00:33:50,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr11REQUIRES_VIOLATION [2021-10-13 00:33:50,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr12REQUIRES_VIOLATION [2021-10-13 00:33:50,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr13REQUIRES_VIOLATION [2021-10-13 00:33:50,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr14REQUIRES_VIOLATION [2021-10-13 00:33:50,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr15REQUIRES_VIOLATION [2021-10-13 00:33:50,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr16REQUIRES_VIOLATION [2021-10-13 00:33:50,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr17REQUIRES_VIOLATION [2021-10-13 00:33:50,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr18REQUIRES_VIOLATION [2021-10-13 00:33:50,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location knapsackErr19REQUIRES_VIOLATION [2021-10-13 00:33:50,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:33:50,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:33:50,233 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:33:50,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:33:50 BoogieIcfgContainer [2021-10-13 00:33:50,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:33:50,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:33:50,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:33:50,251 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:33:50,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:33:46" (3/4) ... [2021-10-13 00:33:50,253 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:33:50,306 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:33:50,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:33:50,311 INFO L168 Benchmark]: Toolchain (without parser) took 5897.67 ms. Allocated memory was 65.0 MB in the beginning and 109.1 MB in the end (delta: 44.0 MB). Free memory was 43.5 MB in the beginning and 54.9 MB in the end (delta: -11.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:50,312 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 65.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:33:50,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.49 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 37.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:50,315 INFO L168 Benchmark]: Boogie Preprocessor took 65.88 ms. Allocated memory is still 65.0 MB. Free memory was 37.2 MB in the beginning and 34.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:50,317 INFO L168 Benchmark]: RCFGBuilder took 1053.18 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 34.4 MB in the beginning and 49.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:50,318 INFO L168 Benchmark]: TraceAbstraction took 4146.78 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 49.0 MB in the beginning and 57.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:50,318 INFO L168 Benchmark]: Witness Printer took 59.45 ms. Allocated memory is still 109.1 MB. Free memory was 57.1 MB in the beginning and 54.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:33:50,320 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 65.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 561.49 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 37.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.88 ms. Allocated memory is still 65.0 MB. Free memory was 37.2 MB in the beginning and 34.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1053.18 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 34.4 MB in the beginning and 49.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4146.78 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 49.0 MB in the beginning and 57.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.45 ms. Allocated memory is still 109.1 MB. Free memory was 57.1 MB in the beginning and 54.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 542]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) VAL [M=0, N=1073741824] [L532] COND TRUE M < 1 [L533] M = 1 VAL [M=1, N=1073741824] [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; VAL [__builtin_alloca (M * sizeof(int))={-2147483648:0}, __builtin_alloca (M * sizeof(int))={5:0}, __builtin_alloca (N * sizeof(int))={7:0}, __builtin_alloca (N * sizeof(int))={3:0}, best={5:0}, cost={-2147483648:0}, i=0, M=1, N=1073741824, size={3:0}, val={7:0}] [L540] COND TRUE i < N VAL [__builtin_alloca (M * sizeof(int))={-2147483648:0}, __builtin_alloca (M * sizeof(int))={5:0}, __builtin_alloca (N * sizeof(int))={7:0}, __builtin_alloca (N * sizeof(int))={3:0}, best={5:0}, cost={-2147483648:0}, i=0, M=1, N=1073741824, size={3:0}, val={7:0}] [L542] size[i] = __VERIFIER_nondet_int() - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 517]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 517]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 519]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 4048.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.6ms, AutomataDifference: 1448.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 154 SDtfs, 179 SDslu, 299 SDs, 0 SdLazy, 125 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1071.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 392.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.5ms SsaConstructionTime, 112.0ms SatisfiabilityAnalysisTime, 1300.2ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 4 QuantifiedInterpolants, 266 SizeOfPredicates, 14 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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! [2021-10-13 00:33:50,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61453f57-48e8-4b3d-87d4-4beb4512dbf2/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...