./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 ................................................................................................................................... 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_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:21:24,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:21:24,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:21:24,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:21:24,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:21:24,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:21:24,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:21:24,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:21:24,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:21:24,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:21:24,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:21:24,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:21:24,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:21:24,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:21:24,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:21:24,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:21:24,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:21:24,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:21:24,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:21:24,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:21:24,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:21:24,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:21:24,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:21:24,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:21:24,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:21:24,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:21:24,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:21:24,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:21:24,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:21:24,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:21:24,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:21:24,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:21:24,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:21:24,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:21:24,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:21:24,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:21:24,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:21:24,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:21:24,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:21:24,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:21:24,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:21:24,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:21:24,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:21:24,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:21:24,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:21:24,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:21:24,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:21:24,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:21:24,917 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:21:24,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:21:24,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:21:24,917 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:21:24,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:21:24,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:21:24,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:21:24,918 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:21:24,918 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:21:24,918 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:21:24,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:21:24,919 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:21:24,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:21:24,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:21:24,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:21:24,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:21:24,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:21:24,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:24,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:21:24,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:21:24,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:21:24,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:21:24,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:21:24,921 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_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-21 19:21:25,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:21:25,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:21:25,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:21:25,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:21:25,224 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:21:25,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-21 19:21:25,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/a93b9f1e5/3969d2fd9fc74390a94462fe92e33b56/FLAGb4e54accd [2021-10-21 19:21:25,963 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:21:25,964 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-21 19:21:25,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/a93b9f1e5/3969d2fd9fc74390a94462fe92e33b56/FLAGb4e54accd [2021-10-21 19:21:26,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/a93b9f1e5/3969d2fd9fc74390a94462fe92e33b56 [2021-10-21 19:21:26,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:21:26,244 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:21:26,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:26,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:21:26,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:21:26,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:26" (1/1) ... [2021-10-21 19:21:26,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d77d499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:26, skipping insertion in model container [2021-10-21 19:21:26,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:26" (1/1) ... [2021-10-21 19:21:26,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:21:26,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:21:26,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:26,629 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) [2021-10-21 19:21:26,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b147f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:26, skipping insertion in model container [2021-10-21 19:21:26,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:26,631 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 19:21:26,633 INFO L168 Benchmark]: Toolchain (without parser) took 387.40 ms. Allocated memory is still 155.2 MB. Free memory was 114.2 MB in the beginning and 127.1 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:26,634 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory was 131.8 MB in the beginning and 131.8 MB in the end (delta: 69.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:26,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.27 ms. Allocated memory is still 155.2 MB. Free memory was 114.0 MB in the beginning and 127.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:26,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory was 131.8 MB in the beginning and 131.8 MB in the end (delta: 69.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.27 ms. Allocated memory is still 155.2 MB. Free memory was 114.0 MB in the beginning and 127.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: 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-e943c26 [2021-10-21 19:21:28,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:21:28,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:21:28,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:21:28,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:21:28,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:21:28,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:21:28,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:21:28,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:21:28,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:21:28,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:21:28,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:21:28,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:21:28,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:21:28,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:21:28,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:21:28,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:21:28,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:21:28,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:21:28,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:21:28,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:21:28,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:21:28,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:21:28,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:21:28,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:21:28,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:21:28,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:21:28,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:21:28,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:21:28,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:21:28,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:21:28,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:21:28,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:21:28,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:21:28,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:21:28,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:21:28,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:21:28,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:21:28,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:21:28,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:21:28,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:21:28,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:21:28,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:21:28,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:21:28,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:21:28,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:21:28,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:21:28,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:21:28,981 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:21:28,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:21:28,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:21:28,982 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:21:28,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:21:28,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:21:28,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:21:28,983 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:21:28,984 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:21:28,984 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:21:28,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:21:28,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:21:28,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:21:28,985 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:21:28,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:21:28,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:21:28,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:21:28,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:21:28,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:21:28,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:28,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:21:28,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:21:28,987 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:21:28,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:21:28,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:21:28,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:21:28,988 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_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-21 19:21:29,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:21:29,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:21:29,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:21:29,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:21:29,412 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:21:29,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-21 19:21:29,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/392cddb35/0c44b64054fd4694912716b70f87732d/FLAG05a2bf056 [2021-10-21 19:21:30,049 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:21:30,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-21 19:21:30,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/392cddb35/0c44b64054fd4694912716b70f87732d/FLAG05a2bf056 [2021-10-21 19:21:30,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/data/392cddb35/0c44b64054fd4694912716b70f87732d [2021-10-21 19:21:30,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:21:30,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:21:30,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:30,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:21:30,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:21:30,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e12f766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:30, skipping insertion in model container [2021-10-21 19:21:30,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:21:30" (1/1) ... [2021-10-21 19:21:30,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:21:30,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:21:30,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:30,849 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 19:21:30,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:21:30,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:30,911 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:21:30,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:21:31,007 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:21:31,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31 WrapperNode [2021-10-21 19:21:31,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:21:31,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:21:31,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:21:31,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:21:31,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:21:31,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:21:31,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:21:31,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:21:31,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (1/1) ... [2021-10-21 19:21:31,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:21:31,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:31,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:21:31,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:21:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:21:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:21:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:21:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:21:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:21:31,210 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-21 19:21:31,211 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-10-21 19:21:31,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:21:31,211 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:21:31,211 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:21:31,212 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:21:31,212 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:21:31,212 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:21:31,212 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:21:31,212 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:21:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:21:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:21:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:21:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:21:31,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:21:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:21:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:21:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:21:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:21:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:21:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:21:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:21:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:21:31,218 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:21:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:21:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:21:31,219 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:21:31,220 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:21:31,221 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:21:31,222 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:21:31,222 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:21:31,222 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:21:31,222 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:21:31,223 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:21:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:21:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:21:31,224 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:21:31,226 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:21:31,226 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:21:31,226 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-21 19:21:31,227 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:21:31,227 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:21:31,227 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:21:31,227 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:21:31,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:21:31,228 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:21:31,228 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:21:31,228 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:21:31,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:21:31,229 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:21:31,229 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:21:31,229 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:21:31,229 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:21:31,229 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:21:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:21:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:21:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:21:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:21:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:21:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:21:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:21:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:21:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:21:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:21:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:21:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:21:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:21:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:21:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:21:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:21:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:21:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:21:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:21:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:21:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:21:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:21:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:21:31,236 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:21:31,236 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:21:31,236 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:21:31,236 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:21:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:21:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:21:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:21:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:21:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:21:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:21:31,249 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:21:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-21 19:21:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-10-21 19:21:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:21:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:21:31,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:21:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:21:31,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:21:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:21:31,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:21:31,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:21:31,576 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-21 19:21:31,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:21:31,717 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-21 19:21:31,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:31 BoogieIcfgContainer [2021-10-21 19:21:31,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:21:31,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:21:31,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:21:31,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:21:31,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:21:30" (1/3) ... [2021-10-21 19:21:31,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1955bd2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:31, skipping insertion in model container [2021-10-21 19:21:31,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:21:31" (2/3) ... [2021-10-21 19:21:31,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1955bd2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:21:31, skipping insertion in model container [2021-10-21 19:21:31,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:31" (3/3) ... [2021-10-21 19:21:31,728 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-10-21 19:21:31,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:21:31,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-21 19:21:31,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:21:31,784 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, mAutomataTypeConcurrency=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 [2021-10-21 19:21:31,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-21 19:21:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 19:21:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:21:31,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:31,807 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:31,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-21 19:21:31,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:31,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1580649199, now seen corresponding path program 1 times [2021-10-21 19:21:31,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:31,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391651626] [2021-10-21 19:21:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:31,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:31,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:31,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:21:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:31,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:21:32,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:32,084 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:21:32,262 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-21 19:21:32,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-10-21 19:21:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:32,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:32,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:32,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391651626] [2021-10-21 19:21:32,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391651626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:21:32,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:21:32,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-10-21 19:21:32,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236667465] [2021-10-21 19:21:32,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:21:32,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:32,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:21:32,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:21:32,716 INFO L87 Difference]: Start difference. First operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:21:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:33,233 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-21 19:21:33,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:21:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-10-21 19:21:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:33,241 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:21:33,241 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 19:21:33,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 306.4ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:21:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 19:21:33,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-21 19:21:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:21:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-21 19:21:33,277 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2021-10-21 19:21:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:33,278 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-21 19:21:33,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:21:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-21 19:21:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:21:33,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:33,280 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:21:33,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-21 19:21:33,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:21:33,491 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-21 19:21:33,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:33,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1580649198, now seen corresponding path program 1 times [2021-10-21 19:21:33,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:21:33,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137051535] [2021-10-21 19:21:33,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:33,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:21:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:21:33,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:21:33,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:21:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:33,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:21:33,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:33,684 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:21:33,693 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:21:34,033 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 19:21:34,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2021-10-21 19:21:34,050 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-21 19:21:34,051 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 35 treesize of output 35 [2021-10-21 19:21:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:34,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:21:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:52,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:21:52,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137051535] [2021-10-21 19:21:52,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137051535] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:21:52,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:21:52,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-21 19:21:52,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346393455] [2021-10-21 19:21:52,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:21:52,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:21:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:21:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=196, Unknown=6, NotChecked=0, Total=240 [2021-10-21 19:21:52,350 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:22:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:19,406 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-21 19:22:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:22:19,408 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19 [2021-10-21 19:22:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:19,410 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:22:19,410 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 19:22:19,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 16867.1ms TimeCoverageRelationStatistics Valid=74, Invalid=340, Unknown=6, NotChecked=0, Total=420 [2021-10-21 19:22:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 19:22:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-21 19:22:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:22:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-21 19:22:19,417 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2021-10-21 19:22:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:19,418 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-21 19:22:19,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:22:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-21 19:22:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:22:19,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:19,420 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:19,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-21 19:22:19,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:19,632 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-21 19:22:19,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:19,633 INFO L82 PathProgramCache]: Analyzing trace with hash 901162851, now seen corresponding path program 1 times [2021-10-21 19:22:19,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:19,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820337255] [2021-10-21 19:22:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:19,634 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:19,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:19,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:19,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:22:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:19,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:22:19,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:19,868 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:19,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-21 19:22:20,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-10-21 19:22:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:22:20,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:22:20,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:20,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820337255] [2021-10-21 19:22:20,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820337255] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:20,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:20,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-21 19:22:20,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73670913] [2021-10-21 19:22:20,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:22:20,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:22:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:22:20,239 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:22:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:20,454 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-21 19:22:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:22:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-10-21 19:22:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:20,456 INFO L225 Difference]: With dead ends: 26 [2021-10-21 19:22:20,456 INFO L226 Difference]: Without dead ends: 26 [2021-10-21 19:22:20,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 183.4ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:22:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-21 19:22:20,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-21 19:22:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:22:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-21 19:22:20,461 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2021-10-21 19:22:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:20,461 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-21 19:22:20,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-21 19:22:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-21 19:22:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:22:20,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:20,463 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:20,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:20,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:20,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-21 19:22:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash 901162852, now seen corresponding path program 1 times [2021-10-21 19:22:20,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:20,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367387127] [2021-10-21 19:22:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:20,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:20,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:20,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:22:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:20,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:22:20,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:20,864 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:21,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-21 19:22:21,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-21 19:22:21,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-21 19:22:21,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-21 19:22:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:22:21,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:22:21,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:21,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367387127] [2021-10-21 19:22:21,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367387127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:21,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:21,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-21 19:22:21,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041851304] [2021-10-21 19:22:21,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:22:21,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:22:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:22:21,817 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:22:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:22,230 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-21 19:22:22,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:22:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-10-21 19:22:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:22,233 INFO L225 Difference]: With dead ends: 25 [2021-10-21 19:22:22,233 INFO L226 Difference]: Without dead ends: 25 [2021-10-21 19:22:22,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 616.2ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:22:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-21 19:22:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-21 19:22:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:22:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-21 19:22:22,238 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2021-10-21 19:22:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:22,238 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-21 19:22:22,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-21 19:22:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-21 19:22:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:22:22,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:22,240 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:22,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:22,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:22,444 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-21 19:22:22,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:22,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1584820282, now seen corresponding path program 1 times [2021-10-21 19:22:22,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:22,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66396527] [2021-10-21 19:22:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:22,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:22,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:22,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:22,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:22:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:22,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:22:22,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:23,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:22:23,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:23,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66396527] [2021-10-21 19:22:23,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66396527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:22:23,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:23,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-10-21 19:22:23,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861521546] [2021-10-21 19:22:23,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:22:23,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:22:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:22:23,404 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 19:22:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:23,726 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-21 19:22:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:22:23,729 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2021-10-21 19:22:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:23,730 INFO L225 Difference]: With dead ends: 25 [2021-10-21 19:22:23,730 INFO L226 Difference]: Without dead ends: 25 [2021-10-21 19:22:23,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 304.6ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:22:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-21 19:22:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-21 19:22:23,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:22:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-21 19:22:23,735 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 26 [2021-10-21 19:22:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:23,735 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-21 19:22:23,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 19:22:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-21 19:22:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:22:23,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:23,737 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:23,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:23,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:23,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr11ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-10-21 19:22:23,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:23,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1701102057, now seen corresponding path program 1 times [2021-10-21 19:22:23,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:23,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096737804] [2021-10-21 19:22:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:23,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:23,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:23,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:22:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:22:24,157 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:22:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:22:24,232 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:22:24,232 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:22:24,234 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr11ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:22:24,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 19:22:24,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 19:22:24,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 19:22:24,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 19:22:24,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 19:22:24,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 19:22:24,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 19:22:24,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 19:22:24,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:24,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:24,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:22:24,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:24,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:24,444 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:22:24,451 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:22:24,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:22:24 BoogieIcfgContainer [2021-10-21 19:22:24,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:22:24,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:22:24,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:22:24,465 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:22:24,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:21:31" (3/4) ... [2021-10-21 19:22:24,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:22:24,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:22:24,475 INFO L168 Benchmark]: Toolchain (without parser) took 54120.61 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 29.4 MB in the beginning and 50.2 MB in the end (delta: -20.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,477 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:24,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.47 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.2 MB in the beginning and 40.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,480 INFO L168 Benchmark]: Boogie Preprocessor took 107.96 ms. Allocated memory is still 67.1 MB. Free memory was 40.9 MB in the beginning and 38.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,481 INFO L168 Benchmark]: RCFGBuilder took 600.60 ms. Allocated memory is still 67.1 MB. Free memory was 38.4 MB in the beginning and 36.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,481 INFO L168 Benchmark]: TraceAbstraction took 52742.88 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.0 MB in the beginning and 50.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 979.6 kB. Max. memory is 16.1 GB. [2021-10-21 19:22:24,482 INFO L168 Benchmark]: Witness Printer took 5.13 ms. Allocated memory is still 81.8 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:24,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 54.5 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 658.47 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.2 MB in the beginning and 40.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.96 ms. Allocated memory is still 67.1 MB. Free memory was 40.9 MB in the beginning and 38.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 600.60 ms. Allocated memory is still 67.1 MB. Free memory was 38.4 MB in the beginning and 36.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 52742.88 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.0 MB in the beginning and 50.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 979.6 kB. Max. memory is 16.1 GB. * Witness Printer took 5.13 ms. Allocated memory is still 81.8 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={5:0}] [L566] return temp; VAL [\result={5:0}, temp={5:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={5:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={6:0}] [L566] return temp; VAL [\result={6:0}, temp={6:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={6:0}, s={5:0}] [L570] s->next = alloc_node() VAL [alloc_node()={6:0}, s={5:0}] [L571] EXPR s->next VAL [s={5:0}, s->next={6:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={5:0}, s->next={6:0}] [L572] free(s) VAL [s={5:0}] [L572] free(s) VAL [s={5:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={5:0}] - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 54 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 52666.4ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 16.8ms, AutomataDifference: 28570.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 110 SDslu, 336 SDs, 0 SdLazy, 558 SolverSat, 46 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 26093.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 18277.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 37.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.4ms SsaConstructionTime, 181.4ms SatisfiabilityAnalysisTime, 21602.8ms InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 206 ConstructedInterpolants, 30 QuantifiedInterpolants, 1656 SizeOfPredicates, 21 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 26/50 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 could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:22:24,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0975a500-e3a2-4864-a363-4994e8eba33e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...