./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3 --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 7c0f55efd94c93e17f9b5d2997faae48611cbba6 ................................................................................................................................... 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_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3 --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 7c0f55efd94c93e17f9b5d2997faae48611cbba6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:05:22,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:05:22,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:05:22,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:05:22,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:05:22,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:05:22,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:05:22,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:05:22,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:05:22,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:05:22,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:05:22,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:05:22,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:05:22,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:05:22,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:05:22,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:05:22,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:05:22,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:05:22,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:05:22,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:05:22,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:05:22,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:05:22,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:05:22,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:05:22,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:05:22,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:05:22,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:05:22,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:05:22,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:05:22,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:05:22,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:05:22,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:05:22,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:05:23,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:05:23,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:05:23,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:05:23,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:05:23,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:05:23,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:05:23,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:05:23,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:05:23,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-15 19:05:23,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:05:23,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:05:23,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:05:23,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:05:23,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:05:23,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:05:23,063 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:05:23,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:05:23,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:05:23,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:05:23,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:05:23,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:05:23,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:05:23,066 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-15 19:05:23,066 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-15 19:05:23,066 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-15 19:05:23,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:05:23,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-15 19:05:23,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:05:23,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:05:23,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:05:23,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:05:23,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:05:23,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:05:23,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:05:23,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:05:23,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:05:23,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:05:23,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:05:23,071 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_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c0f55efd94c93e17f9b5d2997faae48611cbba6 [2021-10-15 19:05:23,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:05:23,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:05:23,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:05:23,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:05:23,392 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:05:23,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-15 19:05:23,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/a182f38bd/83c993622550458784d684be1139b761/FLAG457bdae4c [2021-10-15 19:05:23,975 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:05:23,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-15 19:05:23,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/a182f38bd/83c993622550458784d684be1139b761/FLAG457bdae4c [2021-10-15 19:05:24,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/a182f38bd/83c993622550458784d684be1139b761 [2021-10-15 19:05:24,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:05:24,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-15 19:05:24,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:05:24,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:05:24,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:05:24,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:05:24" (1/1) ... [2021-10-15 19:05:24,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b3418e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:24, skipping insertion in model container [2021-10-15 19:05:24,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:05:24" (1/1) ... [2021-10-15 19:05:24,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:05:24,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:05:24,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:05:24,711 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) [2021-10-15 19:05:24,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46f55486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:24, skipping insertion in model container [2021-10-15 19:05:24,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:05:24,712 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-15 19:05:24,714 INFO L168 Benchmark]: Toolchain (without parser) took 440.82 ms. Allocated memory is still 113.2 MB. Free memory was 69.2 MB in the beginning and 81.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:05:24,715 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory is still 87.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:05:24,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.21 ms. Allocated memory is still 113.2 MB. Free memory was 68.9 MB in the beginning and 81.9 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:05:24,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 113.2 MB. Free memory is still 87.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 438.21 ms. Allocated memory is still 113.2 MB. Free memory was 68.9 MB in the beginning and 81.9 MB in the end (delta: -13.0 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-5709675 [2021-10-15 19:05:26,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:05:26,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:05:27,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:05:27,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:05:27,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:05:27,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:05:27,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:05:27,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:05:27,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:05:27,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:05:27,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:05:27,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:05:27,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:05:27,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:05:27,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:05:27,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:05:27,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:05:27,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:05:27,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:05:27,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:05:27,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:05:27,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:05:27,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:05:27,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:05:27,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:05:27,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:05:27,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:05:27,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:05:27,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:05:27,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:05:27,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:05:27,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:05:27,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:05:27,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:05:27,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:05:27,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:05:27,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:05:27,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:05:27,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:05:27,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:05:27,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-15 19:05:27,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:05:27,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:05:27,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:05:27,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:05:27,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:05:27,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:05:27,154 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:05:27,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:05:27,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:05:27,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:05:27,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:05:27,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:05:27,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:05:27,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-15 19:05:27,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-15 19:05:27,157 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-15 19:05:27,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:05:27,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-15 19:05:27,158 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:05:27,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:05:27,158 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:05:27,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:05:27,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:05:27,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:05:27,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:05:27,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:05:27,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:05:27,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:05:27,161 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:05:27,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:05:27,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:05:27,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:05:27,162 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_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c0f55efd94c93e17f9b5d2997faae48611cbba6 [2021-10-15 19:05:27,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:05:27,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:05:27,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:05:27,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:05:27,588 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:05:27,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-15 19:05:27,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/184567168/5c03998d19464e57b6d1a373c483e2e4/FLAG7148f2892 [2021-10-15 19:05:28,317 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:05:28,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-15 19:05:28,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/184567168/5c03998d19464e57b6d1a373c483e2e4/FLAG7148f2892 [2021-10-15 19:05:28,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/data/184567168/5c03998d19464e57b6d1a373c483e2e4 [2021-10-15 19:05:28,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:05:28,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-15 19:05:28,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:05:28,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:05:28,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:05:28,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:05:28" (1/1) ... [2021-10-15 19:05:28,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21be9577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:28, skipping insertion in model container [2021-10-15 19:05:28,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:05:28" (1/1) ... [2021-10-15 19:05:28,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:05:28,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:05:29,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:05:29,216 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-15 19:05:29,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:05:29,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:05:29,287 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:05:29,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:05:29,392 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:05:29,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29 WrapperNode [2021-10-15 19:05:29,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:05:29,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:05:29,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:05:29,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:05:29,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:05:29,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:05:29,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:05:29,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:05:29,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (1/1) ... [2021-10-15 19:05:29,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:05:29,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:05:29,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:05:29,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:05:29,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-15 19:05:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:05:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-15 19:05:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-15 19:05:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-15 19:05:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-15 19:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-15 19:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-15 19:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-15 19:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-15 19:05:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-15 19:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-15 19:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-15 19:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-15 19:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-15 19:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-15 19:05:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-15 19:05:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-15 19:05:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-15 19:05:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-15 19:05:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-15 19:05:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-15 19:05:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-15 19:05:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-15 19:05:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-15 19:05:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-15 19:05:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-15 19:05:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-15 19:05:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-15 19:05:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-15 19:05:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-15 19:05:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-15 19:05:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-15 19:05:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-15 19:05:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-15 19:05:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-15 19:05:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-15 19:05:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-15 19:05:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-15 19:05:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-15 19:05:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-15 19:05:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-15 19:05:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-15 19:05:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-15 19:05:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-15 19:05:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-15 19:05:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-15 19:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-15 19:05:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-15 19:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-15 19:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-15 19:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-15 19:05:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-15 19:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-15 19:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-15 19:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-15 19:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-15 19:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-15 19:05:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-15 19:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-15 19:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-15 19:05:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-15 19:05:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-15 19:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-15 19:05:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-15 19:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-15 19:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-15 19:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-15 19:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-15 19:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-15 19:05:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-15 19:05:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-15 19:05:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-15 19:05:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-15 19:05:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-15 19:05:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-15 19:05:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-15 19:05:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-15 19:05:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-15 19:05:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-15 19:05:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-15 19:05:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-15 19:05:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-15 19:05:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-15 19:05:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-15 19:05:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-15 19:05:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-15 19:05:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-15 19:05:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-15 19:05:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-15 19:05:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-15 19:05:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-15 19:05:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-15 19:05:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-15 19:05:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-15 19:05:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-15 19:05:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-15 19:05:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-15 19:05:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-15 19:05:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-15 19:05:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-15 19:05:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-15 19:05:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-15 19:05:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-15 19:05:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-15 19:05:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-15 19:05:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-15 19:05:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-15 19:05:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-15 19:05:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-15 19:05:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-15 19:05:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-15 19:05:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-15 19:05:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-15 19:05:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-15 19:05:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-15 19:05:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-15 19:05:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-15 19:05:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-15 19:05:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-15 19:05:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-15 19:05:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-15 19:05:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-15 19:05:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-15 19:05:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-15 19:05:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-15 19:05:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-15 19:05:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-15 19:05:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-15 19:05:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-15 19:05:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-15 19:05:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-15 19:05:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-15 19:05:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-15 19:05:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-15 19:05:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-15 19:05:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-15 19:05:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-15 19:05:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-15 19:05:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-15 19:05:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-15 19:05:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-15 19:05:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-15 19:05:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-15 19:05:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-15 19:05:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-15 19:05:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-15 19:05:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-15 19:05:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-15 19:05:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-15 19:05:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-15 19:05:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-15 19:05:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-15 19:05:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-15 19:05:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-15 19:05:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-15 19:05:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-15 19:05:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-15 19:05:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-15 19:05:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-15 19:05:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-15 19:05:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-15 19:05:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-15 19:05:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-15 19:05:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-15 19:05:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-15 19:05:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-15 19:05:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-15 19:05:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-15 19:05:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-15 19:05:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-15 19:05:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-15 19:05:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-15 19:05:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-15 19:05:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-15 19:05:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-15 19:05:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:05:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-15 19:05:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-15 19:05:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-15 19:05:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-15 19:05:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-15 19:05:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:05:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:05:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-15 19:05:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-15 19:05:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-15 19:05:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-15 19:05:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-15 19:05:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-15 19:05:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-15 19:05:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-15 19:05:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-15 19:05:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-15 19:05:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-15 19:05:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-15 19:05:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-15 19:05:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-15 19:05:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-15 19:05:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-15 19:05:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-15 19:05:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-15 19:05:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-15 19:05:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-15 19:05:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:05:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-15 19:05:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:05:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-15 19:05:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-15 19:05:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-15 19:05:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-15 19:05:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-15 19:05:30,286 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:05:30,731 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:05:31,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:05:31,036 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-15 19:05:31,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:05:31 BoogieIcfgContainer [2021-10-15 19:05:31,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:05:31,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:05:31,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:05:31,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:05:31,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:05:28" (1/3) ... [2021-10-15 19:05:31,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5e4e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:05:31, skipping insertion in model container [2021-10-15 19:05:31,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:05:29" (2/3) ... [2021-10-15 19:05:31,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5e4e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:05:31, skipping insertion in model container [2021-10-15 19:05:31,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:05:31" (3/3) ... [2021-10-15 19:05:31,047 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-2.i [2021-10-15 19:05:31,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:05:31,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-15 19:05:31,099 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:05:31,105 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:05:31,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-15 19:05:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 113 states have internal predecessors, (122), 19 states have call successors, (19), 18 states have call predecessors, (19), 18 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-15 19:05:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:05:31,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:31,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:05:31,132 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:31,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1853453812, now seen corresponding path program 1 times [2021-10-15 19:05:31,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:31,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785610820] [2021-10-15 19:05:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:31,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:31,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:31,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:31,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:05:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:31,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:05:31,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:31,540 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 [2021-10-15 19:05:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:31,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:31,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:31,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785610820] [2021-10-15 19:05:31,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785610820] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:31,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:31,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-15 19:05:31,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582290774] [2021-10-15 19:05:31,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:05:31,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:31,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:05:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:05:31,803 INFO L87 Difference]: Start difference. First operand has 150 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 113 states have internal predecessors, (122), 19 states have call successors, (19), 18 states have call predecessors, (19), 18 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-15 19:05:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:32,095 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2021-10-15 19:05:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:05:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-15 19:05:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:32,112 INFO L225 Difference]: With dead ends: 132 [2021-10-15 19:05:32,112 INFO L226 Difference]: Without dead ends: 129 [2021-10-15 19:05:32,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:05:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-15 19:05:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2021-10-15 19:05:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 90 states have internal predecessors, (97), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-10-15 19:05:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-15 19:05:32,189 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 17 [2021-10-15 19:05:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:32,191 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-15 19:05:32,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-15 19:05:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-15 19:05:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:05:32,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:32,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:05:32,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:32,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:32,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_kobject_createErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1853453811, now seen corresponding path program 1 times [2021-10-15 19:05:32,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:32,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408407617] [2021-10-15 19:05:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:32,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:32,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:32,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:32,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:05:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:32,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:05:32,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:32,631 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 [2021-10-15 19:05:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:32,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:33,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:33,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408407617] [2021-10-15 19:05:33,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408407617] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:33,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:33,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-15 19:05:33,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039329909] [2021-10-15 19:05:33,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:05:33,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:05:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:05:33,207 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:05:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:33,790 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2021-10-15 19:05:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:05:33,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-10-15 19:05:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:33,794 INFO L225 Difference]: With dead ends: 128 [2021-10-15 19:05:33,802 INFO L226 Difference]: Without dead ends: 128 [2021-10-15 19:05:33,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 263.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:05:33,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-15 19:05:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2021-10-15 19:05:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 68 states have (on average 1.411764705882353) internal successors, (96), 90 states have internal predecessors, (96), 18 states have call successors, (18), 17 states have call predecessors, (18), 17 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-10-15 19:05:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-10-15 19:05:33,826 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 17 [2021-10-15 19:05:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:33,827 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-10-15 19:05:33,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:05:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-10-15 19:05:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:05:33,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:33,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:05:33,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:34,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:34,040 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_kobject_createErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:34,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:34,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1824824661, now seen corresponding path program 1 times [2021-10-15 19:05:34,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:34,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004415058] [2021-10-15 19:05:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:34,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:34,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:34,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:34,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:05:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:34,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:05:34,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:34,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:34,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:34,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004415058] [2021-10-15 19:05:34,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004415058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:34,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:34,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-15 19:05:34,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606032575] [2021-10-15 19:05:34,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:05:34,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:34,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:05:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:05:34,403 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-15 19:05:34,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:34,429 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2021-10-15 19:05:34,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:05:34,430 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-15 19:05:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:34,432 INFO L225 Difference]: With dead ends: 122 [2021-10-15 19:05:34,432 INFO L226 Difference]: Without dead ends: 122 [2021-10-15 19:05:34,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:05:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-15 19:05:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-15 19:05:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 87 states have internal predecessors, (93), 17 states have call successors, (17), 17 states have call predecessors, (17), 17 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2021-10-15 19:05:34,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2021-10-15 19:05:34,442 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 17 [2021-10-15 19:05:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:34,442 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2021-10-15 19:05:34,442 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-15 19:05:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2021-10-15 19:05:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-15 19:05:34,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:34,444 INFO L512 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] [2021-10-15 19:05:34,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-15 19:05:34,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:34,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:34,656 INFO L82 PathProgramCache]: Analyzing trace with hash -779180921, now seen corresponding path program 1 times [2021-10-15 19:05:34,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:34,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978472351] [2021-10-15 19:05:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:34,659 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:34,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:34,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:34,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:05:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:34,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:05:34,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:34,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:35,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:35,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978472351] [2021-10-15 19:05:35,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978472351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:35,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:35,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-15 19:05:35,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924729475] [2021-10-15 19:05:35,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:05:35,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:35,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:05:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:05:35,093 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:05:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:35,126 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2021-10-15 19:05:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:05:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 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 29 [2021-10-15 19:05:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:35,129 INFO L225 Difference]: With dead ends: 122 [2021-10-15 19:05:35,130 INFO L226 Difference]: Without dead ends: 122 [2021-10-15 19:05:35,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:05:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-15 19:05:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-15 19:05:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.373134328358209) internal successors, (92), 87 states have internal predecessors, (92), 17 states have call successors, (17), 17 states have call predecessors, (17), 17 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2021-10-15 19:05:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions. [2021-10-15 19:05:35,153 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 29 [2021-10-15 19:05:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:35,154 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 126 transitions. [2021-10-15 19:05:35,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:05:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions. [2021-10-15 19:05:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-15 19:05:35,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:35,156 INFO L512 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] [2021-10-15 19:05:35,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:35,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:35,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:35,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1776253274, now seen corresponding path program 1 times [2021-10-15 19:05:35,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:35,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795082129] [2021-10-15 19:05:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:35,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:35,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:35,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:35,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:05:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:05:35,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:35,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:35,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:35,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795082129] [2021-10-15 19:05:35,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795082129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:35,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:35,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-15 19:05:35,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009206478] [2021-10-15 19:05:35,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:05:35,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:05:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:05:35,883 INFO L87 Difference]: Start difference. First operand 120 states and 126 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:05:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:35,936 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-10-15 19:05:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:05:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-15 19:05:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:35,938 INFO L225 Difference]: With dead ends: 132 [2021-10-15 19:05:35,938 INFO L226 Difference]: Without dead ends: 132 [2021-10-15 19:05:35,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:05:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-15 19:05:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-10-15 19:05:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 93 states have internal predecessors, (97), 18 states have call successors, (18), 18 states have call predecessors, (18), 19 states have return successors, (19), 18 states have call predecessors, (19), 17 states have call successors, (19) [2021-10-15 19:05:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2021-10-15 19:05:35,961 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 29 [2021-10-15 19:05:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:35,961 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2021-10-15 19:05:35,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-15 19:05:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2021-10-15 19:05:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-15 19:05:35,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:35,964 INFO L512 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] [2021-10-15 19:05:35,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:36,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:36,179 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash 438885256, now seen corresponding path program 1 times [2021-10-15 19:05:36,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:36,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194436611] [2021-10-15 19:05:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:36,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:36,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:36,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:36,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-15 19:05:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:36,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 19:05:36,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:36,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:36,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:36,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194436611] [2021-10-15 19:05:36,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194436611] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:36,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:36,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:05:36,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037837386] [2021-10-15 19:05:36,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:05:36,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:36,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:05:36,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:05:36,672 INFO L87 Difference]: Start difference. First operand 128 states and 134 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-15 19:05:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:36,820 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2021-10-15 19:05:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:05:36,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2021-10-15 19:05:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:36,823 INFO L225 Difference]: With dead ends: 139 [2021-10-15 19:05:36,823 INFO L226 Difference]: Without dead ends: 124 [2021-10-15 19:05:36,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:05:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-15 19:05:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2021-10-15 19:05:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 1.375) internal successors, (88), 84 states have internal predecessors, (88), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-10-15 19:05:36,831 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 27 [2021-10-15 19:05:36,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-10-15 19:05:36,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-15 19:05:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-10-15 19:05:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-15 19:05:36,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:36,833 INFO L512 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] [2021-10-15 19:05:36,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:37,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:37,045 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:37,045 INFO L82 PathProgramCache]: Analyzing trace with hash -972322523, now seen corresponding path program 1 times [2021-10-15 19:05:37,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:37,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683778063] [2021-10-15 19:05:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:37,046 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:37,047 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:37,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-15 19:05:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:37,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:05:37,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:37,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:37,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:37,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683778063] [2021-10-15 19:05:37,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683778063] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:37,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:37,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-15 19:05:37,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60745656] [2021-10-15 19:05:37,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:05:37,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:37,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:05:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:05:37,494 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:05:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:37,541 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-10-15 19:05:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:05:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-10-15 19:05:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:37,545 INFO L225 Difference]: With dead ends: 122 [2021-10-15 19:05:37,545 INFO L226 Difference]: Without dead ends: 118 [2021-10-15 19:05:37,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.9ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:05:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-15 19:05:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-15 19:05:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 86 states have internal predecessors, (90), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-10-15 19:05:37,559 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 32 [2021-10-15 19:05:37,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:37,559 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-10-15 19:05:37,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:05:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-10-15 19:05:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-15 19:05:37,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:37,564 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:05:37,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:37,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:37,790 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1413246651, now seen corresponding path program 1 times [2021-10-15 19:05:37,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:37,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059851876] [2021-10-15 19:05:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:37,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:37,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:37,792 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:37,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-15 19:05:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:38,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:05:38,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:38,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:38,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:38,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059851876] [2021-10-15 19:05:38,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059851876] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:05:38,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:05:38,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-15 19:05:38,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587339091] [2021-10-15 19:05:38,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:05:38,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:05:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:05:38,344 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:05:38,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:38,513 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2021-10-15 19:05:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:05:38,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-10-15 19:05:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:38,526 INFO L225 Difference]: With dead ends: 126 [2021-10-15 19:05:38,526 INFO L226 Difference]: Without dead ends: 122 [2021-10-15 19:05:38,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 177.3ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-15 19:05:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-15 19:05:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-15 19:05:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 90 states have internal predecessors, (94), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2021-10-15 19:05:38,531 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 34 [2021-10-15 19:05:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:38,532 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2021-10-15 19:05:38,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:05:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2021-10-15 19:05:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-15 19:05:38,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:38,534 INFO L512 BasicCegarLoop]: trace histogram [6, 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] [2021-10-15 19:05:38,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:38,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:38,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_kref_initErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:38,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1076819579, now seen corresponding path program 2 times [2021-10-15 19:05:38,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:38,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706162785] [2021-10-15 19:05:38,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:05:38,747 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:38,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:38,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-15 19:05:38,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-15 19:05:38,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:05:39,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:05:39,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:39,030 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 [2021-10-15 19:05:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-15 19:05:39,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-15 19:05:39,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:39,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706162785] [2021-10-15 19:05:39,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706162785] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:39,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:39,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-15 19:05:39,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945204101] [2021-10-15 19:05:39,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:05:39,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:05:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:05:39,562 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-15 19:05:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:40,377 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2021-10-15 19:05:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:05:40,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-10-15 19:05:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:40,379 INFO L225 Difference]: With dead ends: 133 [2021-10-15 19:05:40,379 INFO L226 Difference]: Without dead ends: 133 [2021-10-15 19:05:40,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 247.7ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-15 19:05:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-15 19:05:40,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2021-10-15 19:05:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 89 states have internal predecessors, (93), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-10-15 19:05:40,386 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 38 [2021-10-15 19:05:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:40,386 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-10-15 19:05:40,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-15 19:05:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-10-15 19:05:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-15 19:05:40,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:40,388 INFO L512 BasicCegarLoop]: trace histogram [6, 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] [2021-10-15 19:05:40,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:40,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:40,607 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:40,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1076819578, now seen corresponding path program 1 times [2021-10-15 19:05:40,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:40,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033454298] [2021-10-15 19:05:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:40,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:40,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:40,610 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:40,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-15 19:05:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:40,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:05:40,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:41,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:41,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:41,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033454298] [2021-10-15 19:05:41,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033454298] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:05:41,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:05:41,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-15 19:05:41,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147361839] [2021-10-15 19:05:41,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-15 19:05:41,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-15 19:05:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-15 19:05:41,575 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:05:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:42,392 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-10-15 19:05:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-15 19:05:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-10-15 19:05:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:42,396 INFO L225 Difference]: With dead ends: 133 [2021-10-15 19:05:42,396 INFO L226 Difference]: Without dead ends: 129 [2021-10-15 19:05:42,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 889.5ms TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-10-15 19:05:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-15 19:05:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-15 19:05:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.294871794871795) internal successors, (101), 97 states have internal predecessors, (101), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2021-10-15 19:05:42,407 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 38 [2021-10-15 19:05:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:42,408 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2021-10-15 19:05:42,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-15 19:05:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2021-10-15 19:05:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-15 19:05:42,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:42,410 INFO L512 BasicCegarLoop]: trace histogram [14, 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] [2021-10-15 19:05:42,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-15 19:05:42,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:42,622 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_kref_initErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2145805818, now seen corresponding path program 2 times [2021-10-15 19:05:42,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:42,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209930512] [2021-10-15 19:05:42,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:05:42,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:42,624 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:42,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-15 19:05:42,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-15 19:05:42,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:05:42,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-15 19:05:42,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:42,933 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 [2021-10-15 19:05:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-15 19:05:43,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-15 19:05:44,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:44,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209930512] [2021-10-15 19:05:44,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209930512] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:44,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:44,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-15 19:05:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360414497] [2021-10-15 19:05:44,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-15 19:05:44,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-15 19:05:44,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-15 19:05:44,652 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-15 19:05:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:46,741 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2021-10-15 19:05:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:05:46,742 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2021-10-15 19:05:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:46,743 INFO L225 Difference]: With dead ends: 128 [2021-10-15 19:05:46,744 INFO L226 Difference]: Without dead ends: 128 [2021-10-15 19:05:46,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1209.6ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-15 19:05:46,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-15 19:05:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-15 19:05:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 96 states have internal predecessors, (100), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2021-10-15 19:05:46,750 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 46 [2021-10-15 19:05:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:46,750 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2021-10-15 19:05:46,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-15 19:05:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2021-10-15 19:05:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-15 19:05:46,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:46,752 INFO L512 BasicCegarLoop]: trace histogram [14, 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] [2021-10-15 19:05:46,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-15 19:05:46,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:46,962 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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)] === [2021-10-15 19:05:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:46,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2091386010, now seen corresponding path program 1 times [2021-10-15 19:05:46,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:46,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61909163] [2021-10-15 19:05:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:46,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:46,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:46,965 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:46,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-15 19:05:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:47,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 19:05:47,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:47,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:05:48,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:48,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61909163] [2021-10-15 19:05:48,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61909163] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:05:48,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:05:48,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-15 19:05:48,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835721580] [2021-10-15 19:05:48,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-15 19:05:48,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-15 19:05:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-15 19:05:48,666 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-15 19:05:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:49,231 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2021-10-15 19:05:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-15 19:05:49,232 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-15 19:05:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:49,234 INFO L225 Difference]: With dead ends: 134 [2021-10-15 19:05:49,234 INFO L226 Difference]: Without dead ends: 130 [2021-10-15 19:05:49,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 832.7ms TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-15 19:05:49,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-15 19:05:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-15 19:05:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.275) internal successors, (102), 98 states have internal predecessors, (102), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2021-10-15 19:05:49,240 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 51 [2021-10-15 19:05:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:49,241 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 135 transitions. [2021-10-15 19:05:49,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-15 19:05:49,241 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 135 transitions. [2021-10-15 19:05:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-15 19:05:49,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:49,242 INFO L512 BasicCegarLoop]: trace histogram [16, 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] [2021-10-15 19:05:49,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:49,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:49,462 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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)] === [2021-10-15 19:05:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:49,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1898067846, now seen corresponding path program 2 times [2021-10-15 19:05:49,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:49,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340146481] [2021-10-15 19:05:49,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:05:49,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:49,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:49,464 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:49,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-15 19:05:49,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-15 19:05:49,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:05:49,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:05:49,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:49,860 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 [2021-10-15 19:05:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:50,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:50,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:50,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340146481] [2021-10-15 19:05:50,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340146481] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:50,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:50,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-15 19:05:50,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214128512] [2021-10-15 19:05:50,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:05:50,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:50,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:05:50,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:05:50,455 INFO L87 Difference]: Start difference. First operand 130 states and 135 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-15 19:05:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:51,112 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2021-10-15 19:05:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:05:51,113 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2021-10-15 19:05:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:51,114 INFO L225 Difference]: With dead ends: 140 [2021-10-15 19:05:51,114 INFO L226 Difference]: Without dead ends: 140 [2021-10-15 19:05:51,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 216.1ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-15 19:05:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-15 19:05:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-10-15 19:05:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 80 states have (on average 1.25) internal successors, (100), 96 states have internal predecessors, (100), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2021-10-15 19:05:51,120 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 53 [2021-10-15 19:05:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:51,120 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2021-10-15 19:05:51,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-15 19:05:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2021-10-15 19:05:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-15 19:05:51,121 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:51,122 INFO L512 BasicCegarLoop]: trace histogram [16, 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] [2021-10-15 19:05:51,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:51,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:51,322 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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)] === [2021-10-15 19:05:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1898067845, now seen corresponding path program 1 times [2021-10-15 19:05:51,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:51,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135117754] [2021-10-15 19:05:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:51,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:51,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:51,324 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:51,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-15 19:05:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:51,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-15 19:05:51,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:51,757 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 [2021-10-15 19:05:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:52,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:53,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:53,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135117754] [2021-10-15 19:05:53,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135117754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:53,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:53,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-15 19:05:53,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629643841] [2021-10-15 19:05:53,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-15 19:05:53,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-15 19:05:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-15 19:05:53,445 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-15 19:05:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:55,440 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2021-10-15 19:05:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:05:55,441 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 53 [2021-10-15 19:05:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:55,442 INFO L225 Difference]: With dead ends: 126 [2021-10-15 19:05:55,442 INFO L226 Difference]: Without dead ends: 126 [2021-10-15 19:05:55,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1177.5ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-15 19:05:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-15 19:05:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-15 19:05:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 80 states have (on average 1.225) internal successors, (98), 94 states have internal predecessors, (98), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2021-10-15 19:05:55,449 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 53 [2021-10-15 19:05:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:55,449 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2021-10-15 19:05:55,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-15 19:05:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2021-10-15 19:05:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-15 19:05:55,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:55,451 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:05:55,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:55,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:55,662 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:55,663 INFO L82 PathProgramCache]: Analyzing trace with hash 240730744, now seen corresponding path program 1 times [2021-10-15 19:05:55,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:55,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566807571] [2021-10-15 19:05:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:55,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:55,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:55,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:55,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-15 19:05:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:56,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-15 19:05:56,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:56,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:56,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:56,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566807571] [2021-10-15 19:05:56,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566807571] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:56,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:56,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-15 19:05:56,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494138117] [2021-10-15 19:05:56,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:05:56,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:05:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:05:56,452 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-15 19:05:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:56,498 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2021-10-15 19:05:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:05:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-10-15 19:05:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:56,501 INFO L225 Difference]: With dead ends: 128 [2021-10-15 19:05:56,501 INFO L226 Difference]: Without dead ends: 126 [2021-10-15 19:05:56,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-15 19:05:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-15 19:05:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-15 19:05:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 80 states have (on average 1.2125) internal successors, (97), 93 states have internal predecessors, (97), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2021-10-15 19:05:56,508 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 58 [2021-10-15 19:05:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:56,509 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2021-10-15 19:05:56,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-15 19:05:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2021-10-15 19:05:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-15 19:05:56,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:56,510 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:05:56,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:56,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:56,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:56,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:56,723 INFO L82 PathProgramCache]: Analyzing trace with hash -905772081, now seen corresponding path program 1 times [2021-10-15 19:05:56,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:56,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681591641] [2021-10-15 19:05:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:56,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:56,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:56,725 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:56,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-15 19:05:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:57,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:05:57,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:57,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:57,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:57,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681591641] [2021-10-15 19:05:57,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681591641] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:57,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:57,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-10-15 19:05:57,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846293877] [2021-10-15 19:05:57,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 19:05:57,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 19:05:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:05:57,841 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-15 19:05:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:05:57,957 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2021-10-15 19:05:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:05:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2021-10-15 19:05:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:05:57,967 INFO L225 Difference]: With dead ends: 130 [2021-10-15 19:05:57,967 INFO L226 Difference]: Without dead ends: 126 [2021-10-15 19:05:57,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-15 19:05:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-15 19:05:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-15 19:05:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 80 states have (on average 1.2) internal successors, (96), 92 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:05:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2021-10-15 19:05:57,973 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 63 [2021-10-15 19:05:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:05:57,973 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2021-10-15 19:05:57,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-10-15 19:05:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2021-10-15 19:05:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-15 19:05:57,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:05:57,974 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:05:58,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-15 19:05:58,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:05:58,194 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_atomic_sub_returnErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:05:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:05:58,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1773831866, now seen corresponding path program 1 times [2021-10-15 19:05:58,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:05:58,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443436342] [2021-10-15 19:05:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:05:58,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:05:58,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:05:58,197 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:05:58,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-15 19:05:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:05:58,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-15 19:05:58,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:05:58,738 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 [2021-10-15 19:05:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:59,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:05:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:05:59,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:05:59,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443436342] [2021-10-15 19:05:59,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443436342] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:05:59,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:05:59,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 15] imperfect sequences [] total 16 [2021-10-15 19:05:59,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512262829] [2021-10-15 19:05:59,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-15 19:05:59,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:05:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-15 19:05:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-15 19:05:59,718 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-15 19:06:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:00,722 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2021-10-15 19:06:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-15 19:06:00,723 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 74 [2021-10-15 19:06:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:00,724 INFO L225 Difference]: With dead ends: 140 [2021-10-15 19:06:00,724 INFO L226 Difference]: Without dead ends: 140 [2021-10-15 19:06:00,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 119 SyntacticMatches, 13 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 441.0ms TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-10-15 19:06:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-15 19:06:00,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-10-15 19:06:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 80 states have (on average 1.175) internal successors, (94), 90 states have internal predecessors, (94), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:06:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2021-10-15 19:06:00,731 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 74 [2021-10-15 19:06:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:00,731 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2021-10-15 19:06:00,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-15 19:06:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2021-10-15 19:06:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-15 19:06:00,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:00,733 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:00,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:00,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:06:00,948 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_atomic_sub_returnErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:06:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1773831867, now seen corresponding path program 1 times [2021-10-15 19:06:00,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:06:00,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915727046] [2021-10-15 19:06:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:00,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:06:00,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:06:00,950 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:06:00,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-15 19:06:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:01,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-15 19:06:01,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:01,553 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 [2021-10-15 19:06:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:02,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:06:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:04,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:06:04,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915727046] [2021-10-15 19:06:04,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915727046] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:04,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:04,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 16] imperfect sequences [] total 32 [2021-10-15 19:06:04,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284034467] [2021-10-15 19:06:04,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-15 19:06:04,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:06:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-15 19:06:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-10-15 19:06:04,460 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-15 19:06:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:07,278 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2021-10-15 19:06:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-15 19:06:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) Word has length 74 [2021-10-15 19:06:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:07,284 INFO L225 Difference]: With dead ends: 122 [2021-10-15 19:06:07,284 INFO L226 Difference]: Without dead ends: 122 [2021-10-15 19:06:07,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2267.1ms TimeCoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2021-10-15 19:06:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-15 19:06:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-15 19:06:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 80 states have (on average 1.15) internal successors, (92), 88 states have internal predecessors, (92), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:06:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2021-10-15 19:06:07,293 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 74 [2021-10-15 19:06:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:07,295 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2021-10-15 19:06:07,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 8 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-15 19:06:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2021-10-15 19:06:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-15 19:06:07,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:07,301 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:07,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:07,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:06:07,515 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:06:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:07,515 INFO L82 PathProgramCache]: Analyzing trace with hash 44814492, now seen corresponding path program 1 times [2021-10-15 19:06:07,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:06:07,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894330305] [2021-10-15 19:06:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:07,516 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:06:07,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:06:07,517 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:06:07,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-15 19:06:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:08,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:06:08,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:08,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:06:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:08,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:06:08,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894330305] [2021-10-15 19:06:08,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894330305] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:08,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:08,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-10-15 19:06:08,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429649828] [2021-10-15 19:06:08,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 19:06:08,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:06:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 19:06:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:06:08,681 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 11 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-15 19:06:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:08,750 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2021-10-15 19:06:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:06:08,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 72 [2021-10-15 19:06:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:08,752 INFO L225 Difference]: With dead ends: 124 [2021-10-15 19:06:08,752 INFO L226 Difference]: Without dead ends: 122 [2021-10-15 19:06:08,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-15 19:06:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-15 19:06:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-15 19:06:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 80 states have (on average 1.1375) internal successors, (91), 88 states have internal predecessors, (91), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:06:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2021-10-15 19:06:08,762 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 72 [2021-10-15 19:06:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:08,763 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2021-10-15 19:06:08,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-15 19:06:08,763 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2021-10-15 19:06:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-15 19:06:08,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:08,765 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:08,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:08,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:06:08,974 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_cleanupErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:06:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1162576382, now seen corresponding path program 1 times [2021-10-15 19:06:08,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:06:08,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397411575] [2021-10-15 19:06:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:08,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:06:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:06:08,978 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:06:08,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-15 19:06:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-15 19:06:09,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:09,760 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 [2021-10-15 19:06:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:10,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:06:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:10,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:06:10,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397411575] [2021-10-15 19:06:10,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397411575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:10,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:10,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 20 [2021-10-15 19:06:10,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666197494] [2021-10-15 19:06:10,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-15 19:06:10,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:06:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-15 19:06:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-15 19:06:10,954 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-15 19:06:12,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:12,097 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2021-10-15 19:06:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-15 19:06:12,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2021-10-15 19:06:12,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:12,099 INFO L225 Difference]: With dead ends: 132 [2021-10-15 19:06:12,099 INFO L226 Difference]: Without dead ends: 132 [2021-10-15 19:06:12,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 135 SyntacticMatches, 19 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 669.4ms TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2021-10-15 19:06:12,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-15 19:06:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-10-15 19:06:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 80 states have (on average 1.1125) internal successors, (89), 86 states have internal predecessors, (89), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:06:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2021-10-15 19:06:12,104 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 87 [2021-10-15 19:06:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:12,105 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2021-10-15 19:06:12,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 9 states have call successors, (23), 8 states have call predecessors, (23), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-15 19:06:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2021-10-15 19:06:12,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-15 19:06:12,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:12,107 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:12,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:12,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:06:12,333 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_cleanupErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:06:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:12,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1162576381, now seen corresponding path program 1 times [2021-10-15 19:06:12,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:06:12,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162546429] [2021-10-15 19:06:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:12,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:06:12,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:06:12,335 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:06:12,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-15 19:06:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:13,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-15 19:06:13,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:13,072 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 [2021-10-15 19:06:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:14,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:06:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:16,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:06:16,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162546429] [2021-10-15 19:06:16,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162546429] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:16,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:16,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 20] imperfect sequences [] total 40 [2021-10-15 19:06:16,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112995810] [2021-10-15 19:06:16,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-15 19:06:16,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:06:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-15 19:06:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1525, Unknown=0, NotChecked=0, Total=1640 [2021-10-15 19:06:16,778 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-15 19:06:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:21,259 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2021-10-15 19:06:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-15 19:06:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) Word has length 87 [2021-10-15 19:06:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:21,261 INFO L225 Difference]: With dead ends: 118 [2021-10-15 19:06:21,261 INFO L226 Difference]: Without dead ends: 118 [2021-10-15 19:06:21,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3273.6ms TimeCoverageRelationStatistics Valid=170, Invalid=2182, Unknown=0, NotChecked=0, Total=2352 [2021-10-15 19:06:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-15 19:06:21,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-15 19:06:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 80 states have (on average 1.0875) internal successors, (87), 84 states have internal predecessors, (87), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:06:21,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2021-10-15 19:06:21,267 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 87 [2021-10-15 19:06:21,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:21,267 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2021-10-15 19:06:21,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 32 states have (on average 2.75) internal successors, (88), 25 states have internal predecessors, (88), 16 states have call successors, (29), 14 states have call predecessors, (29), 6 states have return successors, (17), 10 states have call predecessors, (17), 6 states have call successors, (17) [2021-10-15 19:06:21,267 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2021-10-15 19:06:21,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-15 19:06:21,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:21,268 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-10-15 19:06:21,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:21,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:06:21,469 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:06:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:21,469 INFO L82 PathProgramCache]: Analyzing trace with hash 303545963, now seen corresponding path program 1 times [2021-10-15 19:06:21,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:06:21,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473118747] [2021-10-15 19:06:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:21,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:06:21,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:06:21,471 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:06:21,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-15 19:06:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:22,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-15 19:06:22,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:23,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:06:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-15 19:06:24,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:06:24,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473118747] [2021-10-15 19:06:24,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473118747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:24,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:24,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 19] imperfect sequences [] total 39 [2021-10-15 19:06:24,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896286712] [2021-10-15 19:06:24,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-15 19:06:24,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:06:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-15 19:06:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2021-10-15 19:06:24,821 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-15 19:06:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:06:26,884 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2021-10-15 19:06:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-15 19:06:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) Word has length 90 [2021-10-15 19:06:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:06:26,888 INFO L225 Difference]: With dead ends: 117 [2021-10-15 19:06:26,888 INFO L226 Difference]: Without dead ends: 117 [2021-10-15 19:06:26,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1733.0ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-10-15 19:06:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-15 19:06:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-10-15 19:06:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 80 states have (on average 1.075) internal successors, (86), 83 states have internal predecessors, (86), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-15 19:06:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2021-10-15 19:06:26,893 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 90 [2021-10-15 19:06:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:06:26,894 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2021-10-15 19:06:26,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 31 states have (on average 3.161290322580645) internal successors, (98), 24 states have internal predecessors, (98), 17 states have call successors, (33), 15 states have call predecessors, (33), 7 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2021-10-15 19:06:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2021-10-15 19:06:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-15 19:06:26,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:06:26,895 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-10-15 19:06:26,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:27,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:06:27,110 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-15 19:06:27,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:27,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2031958406, now seen corresponding path program 1 times [2021-10-15 19:06:27,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:06:27,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803260622] [2021-10-15 19:06:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:27,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:06:27,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:06:27,112 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:06:27,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-15 19:06:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:28,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-15 19:06:28,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:28,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-15 19:06:28,166 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-15 19:06:28,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 25 [2021-10-15 19:06:28,262 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-10-15 19:06:28,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 38 [2021-10-15 19:06:28,408 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-10-15 19:06:28,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 53 [2021-10-15 19:06:28,618 INFO L354 Elim1Store]: treesize reduction 172, result has 16.9 percent of original size [2021-10-15 19:06:28,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 66 [2021-10-15 19:06:28,891 INFO L354 Elim1Store]: treesize reduction 256, result has 14.7 percent of original size [2021-10-15 19:06:28,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 81 [2021-10-15 19:06:29,232 INFO L354 Elim1Store]: treesize reduction 352, result has 13.3 percent of original size [2021-10-15 19:06:29,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 96 [2021-10-15 19:06:29,615 INFO L354 Elim1Store]: treesize reduction 462, result has 12.2 percent of original size [2021-10-15 19:06:29,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 111 [2021-10-15 19:06:30,138 INFO L354 Elim1Store]: treesize reduction 540, result has 11.6 percent of original size [2021-10-15 19:06:30,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 102 treesize of output 122 [2021-10-15 19:06:30,840 INFO L354 Elim1Store]: treesize reduction 680, result has 10.5 percent of original size [2021-10-15 19:06:30,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 137 [2021-10-15 19:06:31,516 INFO L354 Elim1Store]: treesize reduction 796, result has 10.1 percent of original size [2021-10-15 19:06:31,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 124 treesize of output 150 [2021-10-15 19:06:32,216 INFO L354 Elim1Store]: treesize reduction 964, result has 9.2 percent of original size [2021-10-15 19:06:32,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 136 treesize of output 165 [2021-10-15 19:06:33,165 INFO L354 Elim1Store]: treesize reduction 1100, result has 8.9 percent of original size [2021-10-15 19:06:33,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 146 treesize of output 178 [2021-10-15 19:06:34,311 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-10-15 19:06:34,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 157 treesize of output 192 [2021-10-15 19:06:35,611 INFO L354 Elim1Store]: treesize reduction 1452, result has 7.9 percent of original size [2021-10-15 19:06:35,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 168 treesize of output 206 [2021-10-15 19:06:37,090 INFO L354 Elim1Store]: treesize reduction 1646, result has 7.5 percent of original size [2021-10-15 19:06:37,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 179 treesize of output 220 [2021-10-15 19:06:42,419 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |c_#memory_$Pointer$.offset|)) is different from true [2021-10-15 19:06:44,484 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_#in~kobj.base|) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_1) (bvadd (_ bv13 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_2) (bvadd (_ bv14 32) |c_ldv_kobject_init_#in~kobj.offset|) v_DerPreprocessor_3) (bvadd |c_ldv_kobject_init_#in~kobj.offset| (_ bv15 32)) v_DerPreprocessor_4) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_#in~kobj.offset|) .cse0))))) is different from true [2021-10-15 19:06:44,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:44,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:06:44,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 185 treesize of output 195 [2021-10-15 19:06:49,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:06:49,843 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:06:49,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 120 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 133 treesize of output 121 [2021-10-15 19:06:52,567 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:06:52,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 92 treesize of output 40 [2021-10-15 19:06:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:53,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:09:11,604 WARN L207 SmtUtils]: Spent 2.20 m on a formula simplification that was a NOOP. DAG size: 152 [2021-10-15 19:09:25,392 WARN L207 SmtUtils]: Spent 12.02 s on a formula simplification that was a NOOP. DAG size: 106 [2021-10-15 19:09:33,703 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 63 treesize of output 59 [2021-10-15 19:09:35,825 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_17) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_18) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_19) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_20) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) (= (select (select |c_#memory_$Pointer$.offset| |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) is different from false [2021-10-15 19:09:38,173 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base| (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_kobject_init_internal_#in~kobj.offset|))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_init_internal_#in~kobj.base|) (bvadd |c_ldv_kobject_init_internal_#in~kobj.offset| (_ bv12 32)) v_DerPreprocessor_17) (bvadd (_ bv13 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_18) (bvadd (_ bv14 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_19) (bvadd (_ bv15 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) v_DerPreprocessor_20) .cse0 .cse0) (bvadd (_ bv8 32) |c_ldv_kobject_init_internal_#in~kobj.offset|) .cse0))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|) (_ bv0 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base (let ((.cse1 (bvadd (_ bv4 32) c_ldv_kobject_init_internal_~kobj.offset))) (store (store (select |c_#memory_$Pointer$.offset| c_ldv_kobject_init_internal_~kobj.base) .cse1 .cse1) (bvadd (_ bv8 32) c_ldv_kobject_init_internal_~kobj.offset) .cse1))) |v_ldv_kobject_init_#in~kobj.base_BEFORE_CALL_4|) |v_ldv_kobject_init_#in~kobj.offset_BEFORE_CALL_2|)))) is different from false [2021-10-15 19:09:38,460 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:09:38,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3830258 treesize of output 3821565 [2021-10-15 19:09:53,919 WARN L207 SmtUtils]: Spent 15.45 s on a formula simplification that was a NOOP. DAG size: 2072 [2021-10-15 19:16:56,419 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-15 19:16:56,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:16:56,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803260622] [2021-10-15 19:16:56,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-15 19:16:56,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [457114052] [2021-10-15 19:16:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:16:56,421 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-15 19:16:56,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/cvc4 [2021-10-15 19:16:56,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-15 19:16:56,422 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-15 19:16:56,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-15 19:16:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:16:58,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-15 19:16:58,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:16:58,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-15 19:16:58,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692856459] [2021-10-15 19:16:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:16:58,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:16:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:16:58,428 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:16:58,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-15 19:16:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:16:59,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-15 19:16:59,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:16:59,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-15 19:16:59,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:16:59,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-15 19:16:59,580 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-15 19:16:59,580 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-15 19:16:59,587 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,591 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-15 19:16:59,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-15 19:16:59,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-15 19:16:59,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-15 19:16:59,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,594 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,594 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,594 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,594 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,594 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,594 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,595 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,595 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,595 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,595 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,595 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-15 19:16:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-15 19:16:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,597 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,597 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,597 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,597 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-15 19:16:59,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,598 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-15 19:16:59,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-15 19:16:59,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,599 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,600 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,600 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,600 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,600 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,600 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-15 19:16:59,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,601 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-15 19:16:59,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-15 19:16:59,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-15 19:16:59,602 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-15 19:16:59,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-15 19:16:59,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-15 19:17:00,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-15 19:17:00,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0646f55-f470-4030-abd7-ff8043aea16e/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:17:00,228 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:17:00,234 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-15 19:17:00,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:17:00 BoogieIcfgContainer [2021-10-15 19:17:00,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:17:00,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:17:00,255 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:17:00,255 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:17:00,256 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:05:31" (3/4) ... [2021-10-15 19:17:00,261 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:17:00,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:17:00,262 INFO L168 Benchmark]: Toolchain (without parser) took 691686.73 ms. Allocated memory was 71.3 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 47.6 MB in the beginning and 993.9 MB in the end (delta: -946.3 MB). Peak memory consumption was 319.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:00,263 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:17:00,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 814.36 ms. Allocated memory is still 71.3 MB. Free memory was 47.3 MB in the beginning and 36.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:00,263 INFO L168 Benchmark]: Boogie Preprocessor took 156.89 ms. Allocated memory is still 71.3 MB. Free memory was 36.6 MB in the beginning and 32.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:00,264 INFO L168 Benchmark]: RCFGBuilder took 1488.14 ms. Allocated memory is still 71.3 MB. Free memory was 32.0 MB in the beginning and 35.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:00,264 INFO L168 Benchmark]: TraceAbstraction took 689212.97 ms. Allocated memory was 71.3 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 34.6 MB in the beginning and 993.9 MB in the end (delta: -959.3 MB). Peak memory consumption was 307.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:00,264 INFO L168 Benchmark]: Witness Printer took 6.66 ms. Allocated memory is still 1.3 GB. Free memory is still 993.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:17:00,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 814.36 ms. Allocated memory is still 71.3 MB. Free memory was 47.3 MB in the beginning and 36.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 156.89 ms. Allocated memory is still 71.3 MB. Free memory was 36.6 MB in the beginning and 32.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1488.14 ms. Allocated memory is still 71.3 MB. Free memory was 32.0 MB in the beginning and 35.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 689212.97 ms. Allocated memory was 71.3 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 34.6 MB in the beginning and 993.9 MB in the end (delta: -959.3 MB). Peak memory consumption was 307.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.66 ms. Allocated memory is still 1.3 GB. Free memory is still 993.9 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 free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L763] CALL entry_point() [L758] struct ldv_kobject *kobj; [L759] CALL, EXPR ldv_kobject_create() [L740] struct ldv_kobject *kobj; [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L744] FCALL memset(kobj, 0, sizeof(*kobj)) [L745] CALL ldv_kobject_init(kobj) [L730] COND FALSE !(!kobj) [L733] CALL ldv_kobject_init_internal(kobj) [L723] COND FALSE !(!kobj) [L725] CALL ldv_kref_init(&kobj->kref) [L682] ((&kref->refcount)->counter) = (1) [L725] RET ldv_kref_init(&kobj->kref) [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) [L540] list->next = list [L541] list->prev = list [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) [L733] RET ldv_kobject_init_internal(kobj) [L745] RET ldv_kobject_init(kobj) [L746] return kobj; [L759] RET, EXPR ldv_kobject_create() [L759] kobj = ldv_kobject_create() [L760] CALL ldv_kobject_put(kobj) [L711] COND TRUE \read(*kobj) [L712] CALL ldv_kref_put(&kobj->kref, ldv_kobject_release) [L690] CALL ldv_kref_sub(kref, 1, release) [L674] CALL, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L665] int temp; [L666] EXPR v->counter [L666] temp = v->counter [L667] temp -= i [L668] v->counter = temp [L669] return temp; [L674] RET, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L674] COND TRUE (ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0) [L675] CALL release(kref) [L706] const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); [L706] struct ldv_kobject *kobj = ({ const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) );}); [L707] CALL ldv_kobject_cleanup(kobj) [L699] EXPR kobj->name [L699] char *name = kobj->name; [L700] free(kobj) [L700] free(kobj) [L700] free(kobj) [L701] COND TRUE \read(*name) [L702] free(name) - 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: 762]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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: 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 47 procedures, 331 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 689129.2ms, OverallIterations: 23, TraceHistogramMax: 16, EmptinessCheckTime: 42.8ms, AutomataDifference: 20194.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2248 SDtfs, 1152 SDslu, 16433 SDs, 0 SdLazy, 8636 SolverSat, 313 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14456.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2216 GetRequests, 1768 SyntacticMatches, 71 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 13794.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=0, InterpolantAutomatonStates: 264, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 243.1ms AutomataMinimizationTime, 22 MinimizatonAttempts, 79 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 329.7ms SsaConstructionTime, 1600.1ms SatisfiabilityAnalysisTime, 22439.8ms InterpolantComputationTime, 1086 NumberOfCodeBlocks, 1050 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2128 ConstructedInterpolants, 306 QuantifiedInterpolants, 9130 SizeOfPredicates, 94 NumberOfNonLiveVariables, 4649 ConjunctsInSsa, 323 ConjunctsInUnsatCore, 44 InterpolantComputations, 38 PerfectInterpolantSequences, 2972/3230 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 Received shutdown request...