./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD --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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 ................................................................................................................................... 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_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD --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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:59:51,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:59:51,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:59:51,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:59:51,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:59:51,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:59:51,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:59:51,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:59:51,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:59:51,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:59:51,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:59:52,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:59:52,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:59:52,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:59:52,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:59:52,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:59:52,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:59:52,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:59:52,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:59:52,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:59:52,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:59:52,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:59:52,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:59:52,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:59:52,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:59:52,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:59:52,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:59:52,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:59:52,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:59:52,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:59:52,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:59:52,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:59:52,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:59:52,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:59:52,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:59:52,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:59:52,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:59:52,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:59:52,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:59:52,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:59:52,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:59:52,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:59:52,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:59:52,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:59:52,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:59:52,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:59:52,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:59:52,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:59:52,085 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:59:52,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:59:52,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:59:52,086 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:59:52,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:59:52,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:59:52,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:59:52,087 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:59:52,087 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:59:52,088 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:59:52,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:59:52,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:59:52,088 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:59:52,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:59:52,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:59:52,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:59:52,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:59:52,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:59:52,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:59:52,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:59:52,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:59:52,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:59:52,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:59:52,092 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_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2021-10-28 23:59:52,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:59:52,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:59:52,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:59:52,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:59:52,498 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:59:52,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 23:59:52,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/790d35eb7/de89f573c91d40769d5da24f8a933ab0/FLAG29264e120 [2021-10-28 23:59:53,341 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:59:53,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 23:59:53,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/790d35eb7/de89f573c91d40769d5da24f8a933ab0/FLAG29264e120 [2021-10-28 23:59:53,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/790d35eb7/de89f573c91d40769d5da24f8a933ab0 [2021-10-28 23:59:53,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:59:53,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:59:53,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:59:53,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:59:53,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:59:53,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:59:53" (1/1) ... [2021-10-28 23:59:53,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f0264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:53, skipping insertion in model container [2021-10-28 23:59:53,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:59:53" (1/1) ... [2021-10-28 23:59:53,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:59:53,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:59:54,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:59:54,272 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) [2021-10-28 23:59:54,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11c8d49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:54, skipping insertion in model container [2021-10-28 23:59:54,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:59:54,274 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 23:59:54,277 INFO L168 Benchmark]: Toolchain (without parser) took 764.55 ms. Allocated memory is still 92.3 MB. Free memory was 56.2 MB in the beginning and 63.0 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:54,278 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:59:54,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.03 ms. Allocated memory is still 92.3 MB. Free memory was 56.0 MB in the beginning and 63.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:59:54,281 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 92.3 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 761.03 ms. Allocated memory is still 92.3 MB. Free memory was 56.0 MB in the beginning and 63.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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-b2eff8b [2021-10-28 23:59:57,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:59:57,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:59:57,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:59:57,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:59:57,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:59:57,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:59:57,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:59:57,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:59:57,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:59:57,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:59:57,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:59:57,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:59:57,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:59:57,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:59:57,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:59:57,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:59:57,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:59:57,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:59:57,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:59:57,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:59:57,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:59:57,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:59:57,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:59:57,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:59:57,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:59:57,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:59:57,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:59:57,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:59:57,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:59:57,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:59:57,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:59:57,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:59:57,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:59:57,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:59:57,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:59:57,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:59:57,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:59:57,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:59:57,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:59:57,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:59:57,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:59:57,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:59:57,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:59:57,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:59:57,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:59:57,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:59:57,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:59:57,338 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:59:57,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:59:57,338 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:59:57,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:59:57,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:59:57,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:59:57,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:59:57,339 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:59:57,340 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:59:57,340 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:59:57,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:59:57,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:59:57,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:59:57,341 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:59:57,341 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:59:57,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:59:57,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:59:57,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:59:57,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:59:57,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:59:57,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:59:57,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:59:57,343 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:59:57,344 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:59:57,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:59:57,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:59:57,345 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_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2021-10-28 23:59:57,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:59:57,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:59:57,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:59:57,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:59:57,878 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:59:57,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 23:59:57,982 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/8f4561b95/c638e48abc58449e8a70c63d1fde2dbb/FLAG545ad4438 [2021-10-28 23:59:58,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:59:58,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 23:59:58,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/8f4561b95/c638e48abc58449e8a70c63d1fde2dbb/FLAG545ad4438 [2021-10-28 23:59:59,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/data/8f4561b95/c638e48abc58449e8a70c63d1fde2dbb [2021-10-28 23:59:59,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:59:59,052 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:59:59,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:59:59,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:59:59,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:59:59,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:59:59" (1/1) ... [2021-10-28 23:59:59,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723a7b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59, skipping insertion in model container [2021-10-28 23:59:59,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:59:59" (1/1) ... [2021-10-28 23:59:59,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:59:59,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:59:59,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:59:59,709 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 23:59:59,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:59:59,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:59:59,805 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:59:59,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:59:59,934 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:59:59,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59 WrapperNode [2021-10-28 23:59:59,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:59:59,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:59:59,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:59:59,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:59:59,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-28 23:59:59,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-29 00:00:00,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-29 00:00:00,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-29 00:00:00,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-29 00:00:00,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-29 00:00:00,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-29 00:00:00,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 00:00:00,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 00:00:00,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 00:00:00,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 00:00:00,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (1/1) ... [2021-10-29 00:00:00,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 00:00:00,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-29 00:00:00,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 00:00:00,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 00:00:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-29 00:00:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 00:00:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-29 00:00:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-29 00:00:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-29 00:00:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-29 00:00:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-29 00:00:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-29 00:00:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-29 00:00:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-29 00:00:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-29 00:00:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-29 00:00:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-29 00:00:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-29 00:00:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-29 00:00:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-29 00:00:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-29 00:00:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-29 00:00:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-29 00:00:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-29 00:00:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-29 00:00:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-29 00:00:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-29 00:00:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-29 00:00:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-29 00:00:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-29 00:00:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-29 00:00:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-29 00:00:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-29 00:00:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-29 00:00:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-29 00:00:00,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-29 00:00:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-29 00:00:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-29 00:00:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-29 00:00:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-29 00:00:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-29 00:00:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-29 00:00:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-29 00:00:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-29 00:00:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-29 00:00:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-29 00:00:00,307 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_13 [2021-10-29 00:00:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-29 00:00:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-29 00:00:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-29 00:00:00,309 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-29 00:00:00,310 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-29 00:00:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-29 00:00:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-29 00:00:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-29 00:00:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-29 00:00:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-29 00:00:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-29 00:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-29 00:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-29 00:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-29 00:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-29 00:00:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-29 00:00:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-29 00:00:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-29 00:00:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-29 00:00:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-29 00:00:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-29 00:00:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-29 00:00:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-29 00:00:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-29 00:00:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-29 00:00:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-29 00:00:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-29 00:00:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-29 00:00:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-29 00:00:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-29 00:00:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-29 00:00:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-29 00:00:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-29 00:00:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-29 00:00:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-29 00:00:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-29 00:00:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-29 00:00:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-29 00:00:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-29 00:00:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-29 00:00:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-29 00:00:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-29 00:00:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-29 00:00:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-29 00:00:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-29 00:00:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-29 00:00:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-29 00:00:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-29 00:00:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-29 00:00:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-29 00:00:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-29 00:00:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-29 00:00:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-29 00:00:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-29 00:00:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-29 00:00:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-29 00:00:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-29 00:00:00,325 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-29 00:00:00,325 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-29 00:00:00,325 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-29 00:00:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-29 00:00:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-29 00:00:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-29 00:00:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-29 00:00:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-29 00:00:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-29 00:00:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-29 00:00:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-29 00:00:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-29 00:00:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-29 00:00:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-29 00:00:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-29 00:00:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-29 00:00:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-29 00:00:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-29 00:00:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-29 00:00:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-29 00:00:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-29 00:00:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-29 00:00:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-29 00:00:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-29 00:00:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-29 00:00:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-29 00:00:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-29 00:00:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-29 00:00:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-29 00:00:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-29 00:00:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-29 00:00:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-29 00:00:00,341 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-29 00:00:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-29 00:00:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-29 00:00:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-29 00:00:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-29 00:00:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-29 00:00:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-29 00:00:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-29 00:00:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-29 00:00:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-29 00:00:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-29 00:00:00,347 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-29 00:00:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-29 00:00:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-29 00:00:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-29 00:00:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-29 00:00:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-29 00:00:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-29 00:00:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-29 00:00:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-29 00:00:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-29 00:00:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-29 00:00:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-29 00:00:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-29 00:00:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-29 00:00:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-29 00:00:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-29 00:00:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-29 00:00:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-29 00:00:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-29 00:00:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 00:00:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-29 00:00:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-29 00:00:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-29 00:00:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 00:00:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-29 00:00:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-29 00:00:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-29 00:00:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 00:00:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-29 00:00:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-29 00:00:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-29 00:00:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-29 00:00:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-29 00:00:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-29 00:00:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 00:00:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-29 00:00:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-29 00:00:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-29 00:00:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-29 00:00:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-29 00:00:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 00:00:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 00:00:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-29 00:00:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-29 00:00:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-29 00:00:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-29 00:00:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-29 00:00:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-29 00:00:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-29 00:00:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-29 00:00:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-29 00:00:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-29 00:00:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-29 00:00:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-29 00:00:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-29 00:00:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-29 00:00:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-29 00:00:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-29 00:00:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-29 00:00:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_13 [2021-10-29 00:00:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-29 00:00:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-29 00:00:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-29 00:00:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 00:00:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-29 00:00:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 00:00:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-29 00:00:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-29 00:00:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-29 00:00:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-29 00:00:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-29 00:00:01,048 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 00:00:01,519 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 00:00:01,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 00:00:01,922 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-29 00:00:01,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:01 BoogieIcfgContainer [2021-10-29 00:00:01,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 00:00:01,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 00:00:01,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 00:00:01,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 00:00:01,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:59:59" (1/3) ... [2021-10-29 00:00:01,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e4554e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:00:01, skipping insertion in model container [2021-10-29 00:00:01,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:59:59" (2/3) ... [2021-10-29 00:00:01,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e4554e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:00:01, skipping insertion in model container [2021-10-29 00:00:01,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:01" (3/3) ... [2021-10-29 00:00:01,940 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2021-10-29 00:00:01,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 00:00:01,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-29 00:00:02,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 00:00:02,028 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 [2021-10-29 00:00:02,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-29 00:00:02,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-29 00:00:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 00:00:02,082 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:00:02,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:02,083 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:00:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:02,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1239054828, now seen corresponding path program 1 times [2021-10-29 00:00:02,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:00:02,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298022024] [2021-10-29 00:00:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:02,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:00:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:00:02,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:00:02,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 00:00:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:02,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 00:00:02,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:00:02,574 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-29 00:00:02,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-29 00:00:02,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-10-29 00:00:02,894 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 00:00:02,894 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 15 treesize of output 20 [2021-10-29 00:00:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:00:02,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:00:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:00:03,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:00:03,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298022024] [2021-10-29 00:00:03,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298022024] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:03,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:03,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-10-29 00:00:03,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978638609] [2021-10-29 00:00:03,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:00:03,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:00:03,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:00:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:00:03,377 INFO L87 Difference]: Start difference. First operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-29 00:00:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:00:04,023 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-29 00:00:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:00:04,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-10-29 00:00:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:00:04,037 INFO L225 Difference]: With dead ends: 67 [2021-10-29 00:00:04,037 INFO L226 Difference]: Without dead ends: 61 [2021-10-29 00:00:04,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-29 00:00:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-29 00:00:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-29 00:00:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 44 states have internal predecessors, (44), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-29 00:00:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-10-29 00:00:04,113 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 17 [2021-10-29 00:00:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:00:04,114 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-10-29 00:00:04,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-29 00:00:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-10-29 00:00:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 00:00:04,118 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:00:04,120 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:00:04,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 00:00:04,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:00:04,334 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:00:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:00:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1239054827, now seen corresponding path program 1 times [2021-10-29 00:00:04,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:00:04,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352209018] [2021-10-29 00:00:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:00:04,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:00:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:00:04,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:00:04,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 00:00:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:00:04,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-29 00:00:04,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:00:04,682 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-29 00:00:04,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-10-29 00:00:04,712 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 00:00:04,712 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-10-29 00:00:05,581 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-29 00:00:05,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 56 [2021-10-29 00:00:05,605 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:00:05,606 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 56 treesize of output 52 [2021-10-29 00:00:08,016 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-29 00:00:08,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 61 [2021-10-29 00:00:08,127 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-29 00:00:08,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 72 [2021-10-29 00:00:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:00:09,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:00:16,234 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-29 00:00:18,508 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ldv_malloc_#res.base_9| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_9|))) (or (not (bvule |c_~#global_list_13~0.offset| (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|))) (exists ((v_ldv_malloc_~size_9 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_9| v_ldv_malloc_~size_9) |c_~#global_list_13~0.base|))))))) (forall ((|v_ldv_malloc_#res.base_10| (_ BitVec 32))) (or (and (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|) (select (store |c_#length| |v_ldv_malloc_#res.base_10| ldv_malloc_~size) |c_~#global_list_13~0.base|))) (bvule |c_~#global_list_13~0.offset| (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_10|))))))))) is different from true [2021-10-29 00:00:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:00:19,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:00:19,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352209018] [2021-10-29 00:00:19,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352209018] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:00:19,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:00:19,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-29 00:00:19,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259675471] [2021-10-29 00:00:19,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 00:00:19,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:00:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 00:00:19,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=123, Unknown=2, NotChecked=22, Total=182 [2021-10-29 00:00:19,307 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-29 00:01:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:01:00,780 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-10-29 00:01:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:01:00,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2021-10-29 00:01:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:01:00,784 INFO L225 Difference]: With dead ends: 60 [2021-10-29 00:01:00,784 INFO L226 Difference]: Without dead ends: 60 [2021-10-29 00:01:00,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=88, Invalid=219, Unknown=3, NotChecked=32, Total=342 [2021-10-29 00:01:00,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-29 00:01:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-29 00:01:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 43 states have internal predecessors, (43), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-29 00:01:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-29 00:01:00,796 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 17 [2021-10-29 00:01:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:01:00,797 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-29 00:01:00,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-29 00:01:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-29 00:01:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 00:01:00,799 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:01:00,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:01:00,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 00:01:01,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:01:01,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:01:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:01:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1733078590, now seen corresponding path program 1 times [2021-10-29 00:01:01,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:01:01,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718821954] [2021-10-29 00:01:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:01:01,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:01:01,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:01:01,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:01:01,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 00:01:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:01:01,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 00:01:01,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:01:01,470 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 22 treesize of output 14 [2021-10-29 00:01:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:01:01,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:01:01,630 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-29 00:01:01,630 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 21 treesize of output 20 [2021-10-29 00:01:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:01:01,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:01:01,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718821954] [2021-10-29 00:01:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718821954] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:01:01,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:01:01,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-29 00:01:01,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589204297] [2021-10-29 00:01:01,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 00:01:01,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:01:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 00:01:01,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-29 00:01:01,755 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-29 00:01:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:01:02,271 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-10-29 00:01:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:01:02,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-10-29 00:01:02,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:01:02,274 INFO L225 Difference]: With dead ends: 78 [2021-10-29 00:01:02,274 INFO L226 Difference]: Without dead ends: 78 [2021-10-29 00:01:02,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:01:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-29 00:01:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2021-10-29 00:01:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 28 states have (on average 1.5) internal successors, (42), 42 states have internal predecessors, (42), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-29 00:01:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-10-29 00:01:02,284 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 20 [2021-10-29 00:01:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:01:02,289 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-10-29 00:01:02,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-29 00:01:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-10-29 00:01:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 00:01:02,293 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:01:02,293 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:01:02,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 00:01:02,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:01:02,500 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:01:02,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:01:02,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1733078589, now seen corresponding path program 1 times [2021-10-29 00:01:02,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:01:02,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225485692] [2021-10-29 00:01:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:01:02,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:01:02,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:01:02,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:01:02,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 00:01:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:01:02,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-29 00:01:02,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:01:02,854 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 00:01:02,855 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-10-29 00:01:02,921 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-29 00:01:02,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 36 [2021-10-29 00:01:03,890 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-29 00:01:03,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 54 [2021-10-29 00:01:03,904 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-29 00:01:03,904 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 49 treesize of output 45 [2021-10-29 00:01:06,353 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-29 00:01:06,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-10-29 00:01:06,427 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-29 00:01:06,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 71 [2021-10-29 00:01:06,852 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 34 treesize of output 26 [2021-10-29 00:01:06,856 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 23 treesize of output 15 [2021-10-29 00:01:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:01:07,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:01:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:01:26,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:01:26,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225485692] [2021-10-29 00:01:26,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225485692] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:01:26,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:01:26,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-29 00:01:26,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282462022] [2021-10-29 00:01:26,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-29 00:01:26,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:01:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-29 00:01:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=318, Unknown=9, NotChecked=0, Total=380 [2021-10-29 00:01:26,849 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-29 00:02:12,717 WARN L207 SmtUtils]: Spent 6.71 s on a formula simplification that was a NOOP. DAG size: 67 [2021-10-29 00:03:04,117 WARN L207 SmtUtils]: Spent 14.29 s on a formula simplification that was a NOOP. DAG size: 56 [2021-10-29 00:03:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:10,641 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-10-29 00:03:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-29 00:03:10,643 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2021-10-29 00:03:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:10,644 INFO L225 Difference]: With dead ends: 77 [2021-10-29 00:03:10,644 INFO L226 Difference]: Without dead ends: 77 [2021-10-29 00:03:10,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 65.1s TimeCoverageRelationStatistics Valid=208, Invalid=833, Unknown=15, NotChecked=0, Total=1056 [2021-10-29 00:03:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-29 00:03:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2021-10-29 00:03:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 41 states have internal predecessors, (41), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-29 00:03:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-10-29 00:03:10,657 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 20 [2021-10-29 00:03:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:10,658 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-10-29 00:03:10,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-29 00:03:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-10-29 00:03:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:03:10,660 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:10,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:10,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:10,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:10,861 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1106040363, now seen corresponding path program 1 times [2021-10-29 00:03:10,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:10,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492112415] [2021-10-29 00:03:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:10,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:10,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:10,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 00:03:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:11,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:03:11,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:11,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:11,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:11,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492112415] [2021-10-29 00:03:11,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492112415] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:11,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:11,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 00:03:11,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659003062] [2021-10-29 00:03:11,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:03:11,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:03:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:03:11,494 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-29 00:03:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:11,525 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-29 00:03:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:03:11,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2021-10-29 00:03:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:11,527 INFO L225 Difference]: With dead ends: 58 [2021-10-29 00:03:11,527 INFO L226 Difference]: Without dead ends: 58 [2021-10-29 00:03:11,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:03:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-29 00:03:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-29 00:03:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 40 states have internal predecessors, (40), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-29 00:03:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-10-29 00:03:11,538 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 19 [2021-10-29 00:03:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:11,538 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-10-29 00:03:11,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-29 00:03:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-10-29 00:03:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:03:11,540 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:11,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:11,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:11,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:11,754 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1302553868, now seen corresponding path program 1 times [2021-10-29 00:03:11,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:11,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913171524] [2021-10-29 00:03:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:11,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:11,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:11,758 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:11,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 00:03:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:12,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 00:03:12,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:12,149 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-29 00:03:12,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-29 00:03:12,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 7 [2021-10-29 00:03:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:12,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:12,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2021-10-29 00:03:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:12,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:12,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913171524] [2021-10-29 00:03:12,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913171524] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:12,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:12,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-29 00:03:12,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141086269] [2021-10-29 00:03:12,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 00:03:12,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 00:03:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 00:03:12,740 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-29 00:03:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:13,218 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-10-29 00:03:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 00:03:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 19 [2021-10-29 00:03:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:13,220 INFO L225 Difference]: With dead ends: 56 [2021-10-29 00:03:13,220 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 00:03:13,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:03:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 00:03:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-29 00:03:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 38 states have internal predecessors, (38), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-29 00:03:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-29 00:03:13,228 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 19 [2021-10-29 00:03:13,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:13,229 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-29 00:03:13,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-29 00:03:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-29 00:03:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 00:03:13,230 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:13,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:13,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-29 00:03:13,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:13,431 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1302553867, now seen corresponding path program 1 times [2021-10-29 00:03:13,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:13,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696082656] [2021-10-29 00:03:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:13,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:13,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:13,434 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:13,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 00:03:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:13,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 00:03:13,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:13,777 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 00:03:13,777 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 00:03:13,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-10-29 00:03:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:14,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:14,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-10-29 00:03:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:15,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:15,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696082656] [2021-10-29 00:03:15,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696082656] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:15,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:15,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-29 00:03:15,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117014992] [2021-10-29 00:03:15,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 00:03:15,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:15,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 00:03:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-29 00:03:15,073 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-29 00:03:16,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:16,624 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-10-29 00:03:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:03:16,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2021-10-29 00:03:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:16,626 INFO L225 Difference]: With dead ends: 80 [2021-10-29 00:03:16,627 INFO L226 Difference]: Without dead ends: 67 [2021-10-29 00:03:16,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:03:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-29 00:03:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2021-10-29 00:03:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 42 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-29 00:03:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-10-29 00:03:16,645 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 19 [2021-10-29 00:03:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:16,646 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-10-29 00:03:16,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-29 00:03:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-10-29 00:03:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 00:03:16,647 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:16,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:16,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:16,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:16,854 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:16,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2109138627, now seen corresponding path program 1 times [2021-10-29 00:03:16,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:16,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930904553] [2021-10-29 00:03:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:16,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:16,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:16,864 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:16,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 00:03:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:17,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 00:03:17,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:17,278 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 [2021-10-29 00:03:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:17,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:17,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:17,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930904553] [2021-10-29 00:03:17,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930904553] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:17,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:17,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-29 00:03:17,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822658239] [2021-10-29 00:03:17,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 00:03:17,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:17,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 00:03:17,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-29 00:03:17,730 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 00:03:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:18,259 INFO L93 Difference]: Finished difference Result 64 states and 63 transitions. [2021-10-29 00:03:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 00:03:18,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-10-29 00:03:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:18,260 INFO L225 Difference]: With dead ends: 64 [2021-10-29 00:03:18,260 INFO L226 Difference]: Without dead ends: 64 [2021-10-29 00:03:18,261 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-29 00:03:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-29 00:03:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2021-10-29 00:03:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-29 00:03:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-29 00:03:18,267 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 21 [2021-10-29 00:03:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:18,268 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-29 00:03:18,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 00:03:18,268 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-29 00:03:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 00:03:18,269 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:18,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:18,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:18,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:18,477 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2109138628, now seen corresponding path program 1 times [2021-10-29 00:03:18,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:18,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286701034] [2021-10-29 00:03:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:18,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:18,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:18,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:18,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 00:03:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:18,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 00:03:18,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:18,900 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 [2021-10-29 00:03:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:19,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:20,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:20,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286701034] [2021-10-29 00:03:20,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286701034] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:20,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:20,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-10-29 00:03:20,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891466745] [2021-10-29 00:03:20,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-29 00:03:20,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-29 00:03:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-10-29 00:03:20,484 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-29 00:03:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:21,931 INFO L93 Difference]: Finished difference Result 62 states and 61 transitions. [2021-10-29 00:03:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 00:03:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-10-29 00:03:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:21,934 INFO L225 Difference]: With dead ends: 62 [2021-10-29 00:03:21,934 INFO L226 Difference]: Without dead ends: 62 [2021-10-29 00:03:21,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-29 00:03:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-29 00:03:21,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-10-29 00:03:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 41 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-29 00:03:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-10-29 00:03:21,944 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 21 [2021-10-29 00:03:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:21,944 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-10-29 00:03:21,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-29 00:03:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-10-29 00:03:21,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 00:03:21,945 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:21,946 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:21,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:22,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:22,150 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2056745950, now seen corresponding path program 1 times [2021-10-29 00:03:22,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:22,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554964315] [2021-10-29 00:03:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:22,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:22,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:22,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:22,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 00:03:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:22,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 00:03:22,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:22,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:22,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:22,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554964315] [2021-10-29 00:03:22,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554964315] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:22,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:22,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-29 00:03:22,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237278573] [2021-10-29 00:03:22,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:03:22,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:03:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:03:22,884 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 00:03:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:22,907 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-10-29 00:03:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:03:22,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-10-29 00:03:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:22,910 INFO L225 Difference]: With dead ends: 48 [2021-10-29 00:03:22,910 INFO L226 Difference]: Without dead ends: 44 [2021-10-29 00:03:22,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:03:22,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-29 00:03:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-29 00:03:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 28 states have internal predecessors, (28), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-29 00:03:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 43 transitions. [2021-10-29 00:03:22,918 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 43 transitions. Word has length 21 [2021-10-29 00:03:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:22,918 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 43 transitions. [2021-10-29 00:03:22,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 00:03:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2021-10-29 00:03:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 00:03:22,919 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:22,919 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:22,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:23,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:23,136 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash -342340858, now seen corresponding path program 1 times [2021-10-29 00:03:23,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:23,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87813614] [2021-10-29 00:03:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:23,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:23,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:23,139 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:23,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 00:03:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:23,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 00:03:23,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:23,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:23,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:23,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87813614] [2021-10-29 00:03:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87813614] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:23,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:23,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 00:03:23,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667654591] [2021-10-29 00:03:23,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 00:03:23,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 00:03:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 00:03:23,793 INFO L87 Difference]: Start difference. First operand 44 states and 43 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 00:03:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:23,980 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2021-10-29 00:03:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 00:03:23,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-29 00:03:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:23,982 INFO L225 Difference]: With dead ends: 43 [2021-10-29 00:03:23,982 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 00:03:23,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 00:03:23,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 00:03:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-29 00:03:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 27 states have internal predecessors, (27), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-29 00:03:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2021-10-29 00:03:23,996 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 23 [2021-10-29 00:03:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:23,996 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2021-10-29 00:03:23,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-29 00:03:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2021-10-29 00:03:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 00:03:23,998 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:23,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:24,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:24,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:24,213 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:24,213 INFO L85 PathProgramCache]: Analyzing trace with hash -342340857, now seen corresponding path program 1 times [2021-10-29 00:03:24,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:24,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392034661] [2021-10-29 00:03:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:24,214 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:24,215 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:24,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 00:03:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:24,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 00:03:24,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:24,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:25,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-10-29 00:03:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:25,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:25,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392034661] [2021-10-29 00:03:25,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392034661] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:25,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:25,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-29 00:03:25,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719685240] [2021-10-29 00:03:25,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 00:03:25,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:25,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 00:03:25,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-29 00:03:25,584 INFO L87 Difference]: Start difference. First operand 43 states and 42 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-29 00:03:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:26,249 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2021-10-29 00:03:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:03:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 23 [2021-10-29 00:03:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:26,251 INFO L225 Difference]: With dead ends: 42 [2021-10-29 00:03:26,251 INFO L226 Difference]: Without dead ends: 42 [2021-10-29 00:03:26,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-29 00:03:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-29 00:03:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-29 00:03:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-29 00:03:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 41 transitions. [2021-10-29 00:03:26,256 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 41 transitions. Word has length 23 [2021-10-29 00:03:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:26,256 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 41 transitions. [2021-10-29 00:03:26,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-29 00:03:26,257 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2021-10-29 00:03:26,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 00:03:26,258 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:26,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:26,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:26,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:26,481 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash 891555764, now seen corresponding path program 1 times [2021-10-29 00:03:26,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:26,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157481391] [2021-10-29 00:03:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:26,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:26,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:26,484 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:26,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 00:03:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:26,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 00:03:26,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:27,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:27,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-10-29 00:03:28,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:03:28,467 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 16 treesize of output 20 [2021-10-29 00:03:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:28,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:28,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157481391] [2021-10-29 00:03:28,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157481391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:28,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:28,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-10-29 00:03:28,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103819848] [2021-10-29 00:03:28,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 00:03:28,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 00:03:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-29 00:03:28,815 INFO L87 Difference]: Start difference. First operand 42 states and 41 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-29 00:03:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:29,799 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2021-10-29 00:03:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 00:03:29,800 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) Word has length 33 [2021-10-29 00:03:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:29,801 INFO L225 Difference]: With dead ends: 41 [2021-10-29 00:03:29,801 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 00:03:29,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-29 00:03:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 00:03:29,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-29 00:03:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-29 00:03:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 40 transitions. [2021-10-29 00:03:29,805 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 40 transitions. Word has length 33 [2021-10-29 00:03:29,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:29,806 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 40 transitions. [2021-10-29 00:03:29,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-29 00:03:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2021-10-29 00:03:29,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-29 00:03:29,808 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:29,808 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:29,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:30,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:30,019 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1868424939, now seen corresponding path program 1 times [2021-10-29 00:03:30,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:30,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578200385] [2021-10-29 00:03:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:30,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:30,021 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:30,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-29 00:03:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 00:03:30,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-29 00:03:30,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 00:03:30,674 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 7 treesize of output 3 [2021-10-29 00:03:30,683 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 7 treesize of output 3 [2021-10-29 00:03:31,450 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 30 treesize of output 22 [2021-10-29 00:03:31,459 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 19 treesize of output 11 [2021-10-29 00:03:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:31,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 00:03:32,437 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:03:32,437 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 32 treesize of output 36 [2021-10-29 00:03:33,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:03:33,215 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 24 treesize of output 28 [2021-10-29 00:03:33,560 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 8 treesize of output 4 [2021-10-29 00:03:33,590 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 12 treesize of output 8 [2021-10-29 00:03:34,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:03:34,150 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 16 treesize of output 20 [2021-10-29 00:03:34,535 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 12 treesize of output 8 [2021-10-29 00:03:34,563 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 8 treesize of output 4 [2021-10-29 00:03:35,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 00:03:35,039 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 16 treesize of output 20 [2021-10-29 00:03:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 00:03:36,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-29 00:03:36,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578200385] [2021-10-29 00:03:36,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578200385] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 00:03:36,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 00:03:36,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-29 00:03:36,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134259773] [2021-10-29 00:03:36,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-29 00:03:36,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-29 00:03:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-29 00:03:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2021-10-29 00:03:36,334 INFO L87 Difference]: Start difference. First operand 41 states and 40 transitions. Second operand has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-29 00:03:39,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 00:03:39,014 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2021-10-29 00:03:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-29 00:03:39,016 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 34 [2021-10-29 00:03:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 00:03:39,017 INFO L225 Difference]: With dead ends: 40 [2021-10-29 00:03:39,017 INFO L226 Difference]: Without dead ends: 40 [2021-10-29 00:03:39,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2021-10-29 00:03:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-29 00:03:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-29 00:03:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-29 00:03:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 39 transitions. [2021-10-29 00:03:39,021 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 39 transitions. Word has length 34 [2021-10-29 00:03:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 00:03:39,022 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 39 transitions. [2021-10-29 00:03:39,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-29 00:03:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2021-10-29 00:03:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-29 00:03:39,024 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 00:03:39,024 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:39,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:39,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:39,241 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-29 00:03:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 00:03:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1326046929, now seen corresponding path program 1 times [2021-10-29 00:03:39,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-29 00:03:39,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45507746] [2021-10-29 00:03:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 00:03:39,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 00:03:39,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-29 00:03:39,244 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 00:03:39,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-29 00:03:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:39,827 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 00:03:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 00:03:40,004 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-29 00:03:40,005 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 00:03:40,006 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-29 00:03:40,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-29 00:03:40,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-29 00:03:40,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-29 00:03:40,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-29 00:03:40,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-29 00:03:40,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-29 00:03:40,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-29 00:03:40,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-29 00:03:40,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 00:03:40,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-29 00:03:40,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-29 00:03:40,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-29 00:03:40,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-29 00:03:40,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-29 00:03:40,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-29 00:03:40,247 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 00:03:40,252 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 00:03:40,271 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-29 00:03:40,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:03:40 BoogieIcfgContainer [2021-10-29 00:03:40,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 00:03:40,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 00:03:40,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 00:03:40,296 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 00:03:40,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:00:01" (3/4) ... [2021-10-29 00:03:40,301 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 00:03:40,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 00:03:40,302 INFO L168 Benchmark]: Toolchain (without parser) took 221249.56 ms. Allocated memory was 62.9 MB in the beginning and 109.1 MB in the end (delta: 46.1 MB). Free memory was 41.5 MB in the beginning and 38.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:40,302 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:03:40,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 882.44 ms. Allocated memory is still 62.9 MB. Free memory was 41.3 MB in the beginning and 29.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:40,303 INFO L168 Benchmark]: Boogie Preprocessor took 221.16 ms. Allocated memory is still 62.9 MB. Free memory was 29.1 MB in the beginning and 24.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:40,304 INFO L168 Benchmark]: RCFGBuilder took 1768.15 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 24.3 MB in the beginning and 47.7 MB in the end (delta: -23.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:40,305 INFO L168 Benchmark]: TraceAbstraction took 218364.40 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.9 MB in the beginning and 39.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-29 00:03:40,305 INFO L168 Benchmark]: Witness Printer took 5.48 ms. Allocated memory is still 109.1 MB. Free memory was 39.1 MB in the beginning and 38.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 00:03:40,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 882.44 ms. Allocated memory is still 62.9 MB. Free memory was 41.3 MB in the beginning and 29.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 221.16 ms. Allocated memory is still 62.9 MB. Free memory was 29.1 MB in the beginning and 24.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1768.15 ms. Allocated memory was 62.9 MB in the beginning and 86.0 MB in the end (delta: 23.1 MB). Free memory was 24.3 MB in the beginning and 47.7 MB in the end (delta: -23.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 218364.40 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.9 MB in the beginning and 39.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.48 ms. Allocated memory is still 109.1 MB. Free memory was 39.1 MB in the beginning and 38.0 MB in the end (delta: 1.0 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [\old(global_list_13)=null, \old(global_list_13)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] CALL entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L769] CALL alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) VAL [\old(size)=12, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, ldv_malloc(sizeof(struct A13))={1:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L765] CALL ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}] [L559] EXPR head->next VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, next={-2147483648:0}, prev={-2147483648:0}] [L547] next->prev = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L548] new->next = next VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L549] new->prev = prev VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L550] prev->next = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L765] RET ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L769] RET alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L770] CALL LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}] [L540] list->next = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L541] list->prev = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L770] RET LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] RET entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 335 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 218.2s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 155.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 499 SDtfs, 951 SDslu, 1740 SDs, 0 SdLazy, 2237 SolverSat, 447 SolverUnsat, 55 SolverUnknown, 0 SolverNotchecked, 103.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 663 GetRequests, 435 SyntacticMatches, 31 SemanticMatches, 197 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 87.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 53.9s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 586 ConstructedInterpolants, 38 QuantifiedInterpolants, 6185 SizeOfPredicates, 128 NumberOfNonLiveVariables, 1929 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 00:03:40,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc24cff-f638-459c-9b3d-95ab64bdb018/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...