./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/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_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c ................................................................................................................................... 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_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/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_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:22:17,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:22:17,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:22:17,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:22:17,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:22:17,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:22:17,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:22:17,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:22:17,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:22:17,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:22:17,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:22:17,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:22:17,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:22:17,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:22:17,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:22:17,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:22:17,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:22:17,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:22:17,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:22:17,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:22:17,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:22:17,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:22:17,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:22:17,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:22:17,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:22:17,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:22:17,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:22:17,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:22:17,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:22:17,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:22:17,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:22:17,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:22:17,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:22:17,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:22:17,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:22:17,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:22:17,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:22:17,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:22:17,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:22:17,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:22:17,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:22:17,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:22:17,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:22:17,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:22:17,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:22:17,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:22:17,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:22:17,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:22:17,607 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:22:17,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:22:17,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:22:17,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:22:17,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:22:17,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:22:17,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:22:17,609 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:22:17,609 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:22:17,609 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:22:17,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:22:17,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:22:17,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:22:17,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:22:17,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:22:17,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:22:17,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:22:17,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:17,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:22:17,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:22:17,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:22:17,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:22:17,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:22:17,612 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_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2021-10-21 19:22:17,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:22:17,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:22:17,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:22:17,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:22:17,872 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:22:17,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-21 19:22:17,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/ecb90a6c6/8e699cca59144cacaf1849c713a7e733/FLAG80fbdd3da [2021-10-21 19:22:18,544 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:22:18,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-21 19:22:18,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/ecb90a6c6/8e699cca59144cacaf1849c713a7e733/FLAG80fbdd3da [2021-10-21 19:22:18,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/ecb90a6c6/8e699cca59144cacaf1849c713a7e733 [2021-10-21 19:22:18,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:22:18,836 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:22:18,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:18,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:22:18,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:22:18,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:18" (1/1) ... [2021-10-21 19:22:18,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f8c3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:18, skipping insertion in model container [2021-10-21 19:22:18,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:18" (1/1) ... [2021-10-21 19:22:18,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:22:18,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:22:19,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:19,344 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-21 19:22:19,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@511c09ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:19, skipping insertion in model container [2021-10-21 19:22:19,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:19,345 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 19:22:19,348 INFO L168 Benchmark]: Toolchain (without parser) took 509.61 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.3 MB in the beginning and 77.0 MB in the end (delta: -26.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:19,349 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory was 56.4 MB in the beginning and 56.4 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:19,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.10 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.0 MB in the beginning and 77.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:19,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory was 56.4 MB in the beginning and 56.4 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 507.10 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.0 MB in the beginning and 77.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 6.3 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-e943c26 [2021-10-21 19:22:21,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:22:21,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:22:21,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:22:21,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:22:21,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:22:21,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:22:21,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:22:21,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:22:21,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:22:21,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:22:21,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:22:21,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:22:21,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:22:21,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:22:21,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:22:21,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:22:21,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:22:21,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:22:21,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:22:21,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:22:21,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:22:21,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:22:21,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:22:21,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:22:21,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:22:21,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:22:21,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:22:21,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:22:21,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:22:21,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:22:21,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:22:21,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:22:21,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:22:21,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:22:21,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:22:21,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:22:21,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:22:21,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:22:21,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:22:21,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:22:21,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:22:21,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:22:21,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:22:21,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:22:21,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:22:21,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:22:21,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:22:21,589 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:22:21,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:22:21,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:22:21,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:22:21,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:22:21,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:22:21,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:22:21,595 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:22:21,596 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:22:21,596 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:22:21,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:22:21,597 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:22:21,597 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:22:21,597 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:22:21,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:22:21,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:22:21,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:22:21,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:22:21,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:22:21,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:21,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:22:21,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:22:21,600 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:22:21,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:22:21,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:22:21,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:22:21,601 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_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11cd0b9da22b48a523bf90b6f5cbc98a0e4e6a8f70a83fae3d817f12f25f212c [2021-10-21 19:22:22,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:22:22,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:22:22,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:22:22,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:22:22,085 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:22:22,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-21 19:22:22,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/455d0efca/96e28a13b7424623b188dd7220b7bbb6/FLAG70d48a69d [2021-10-21 19:22:22,782 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:22:22,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-2.i [2021-10-21 19:22:22,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/455d0efca/96e28a13b7424623b188dd7220b7bbb6/FLAG70d48a69d [2021-10-21 19:22:23,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/data/455d0efca/96e28a13b7424623b188dd7220b7bbb6 [2021-10-21 19:22:23,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:22:23,056 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:22:23,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:23,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:22:23,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:22:23,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:23,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4e6113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23, skipping insertion in model container [2021-10-21 19:22:23,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:23,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:22:23,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:22:23,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:23,683 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 19:22:23,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:22:23,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:23,792 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:22:23,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:23,923 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:22:23,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23 WrapperNode [2021-10-21 19:22:23,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:23,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:22:23,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:22:23,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:22:23,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:23,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:23,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:23,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:24,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:24,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:24,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:24,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:22:24,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:22:24,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:22:24,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:22:24,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (1/1) ... [2021-10-21 19:22:24,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:24,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:22:24,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:22:24,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:22:24,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:22:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:22:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 19:22:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:22:24,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:22:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:22:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:22:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:22:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:22:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-21 19:22:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-21 19:22:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-21 19:22:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-21 19:22:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-21 19:22:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-21 19:22:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-21 19:22:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-21 19:22:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-21 19:22:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-21 19:22:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-21 19:22:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-21 19:22:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-21 19:22:24,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-21 19:22:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-21 19:22:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-21 19:22:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-21 19:22:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-21 19:22:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-21 19:22:24,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-21 19:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-21 19:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-21 19:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-21 19:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-21 19:22:24,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-21 19:22:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-21 19:22:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-21 19:22:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-21 19:22:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-21 19:22:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-21 19:22:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-21 19:22:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 19:22:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 19:22:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-21 19:22:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:22:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-21 19:22:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-21 19:22:24,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-21 19:22:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:22:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:22:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:22:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:22:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:22:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:22:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:22:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:22:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:22:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:22:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:22:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:22:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:22:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:22:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:22:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:22:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:22:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:22:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:22:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:22:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:22:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:22:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:22:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:22:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:22:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:22:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:22:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:22:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:22:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:22:24,209 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:22:24,209 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:22:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:22:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:22:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:22:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:22:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:22:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:22:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:22:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:22:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:22:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:22:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:22:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:22:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:22:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:22:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:22:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:22:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:22:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:22:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:22:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:22:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:22:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:22:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:22:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:22:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:22:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:22:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:22:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:22:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:22:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:22:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:22:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:22:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:22:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:22:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:22:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:22:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:22:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:22:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:22:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:22:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:22:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:22:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:22:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:22:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:22:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:22:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:22:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:22:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:22:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:22:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:22:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:22:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:22:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:22:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:22:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:22:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:22:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:22:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:22:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:22:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:22:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:22:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:22:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:22:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:22:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:22:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:22:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:22:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:22:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:22:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:22:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:22:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:22:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:22:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:22:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-21 19:22:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:22:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-21 19:22:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-21 19:22:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 19:22:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 19:22:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-21 19:22:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:22:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-21 19:22:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-21 19:22:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-21 19:22:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:22:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-21 19:22:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-21 19:22:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-21 19:22:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:22:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-21 19:22:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-21 19:22:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-21 19:22:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-21 19:22:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-21 19:22:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-21 19:22:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:22:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-21 19:22:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-21 19:22:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-21 19:22:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-21 19:22:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-21 19:22:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:22:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:22:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-21 19:22:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-21 19:22:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 19:22:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-21 19:22:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-21 19:22:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-21 19:22:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-21 19:22:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-21 19:22:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-21 19:22:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-21 19:22:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-21 19:22:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-21 19:22:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-21 19:22:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-21 19:22:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-21 19:22:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 19:22:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 19:22:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-21 19:22:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:22:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:22:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:22:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 19:22:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:22:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:22:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-21 19:22:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-21 19:22:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-21 19:22:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-21 19:22:24,880 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:22:25,279 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:22:25,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:22:25,606 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 19:22:25,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:25 BoogieIcfgContainer [2021-10-21 19:22:25,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:22:25,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:22:25,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:22:25,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:22:25,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:22:23" (1/3) ... [2021-10-21 19:22:25,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0fec12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:25, skipping insertion in model container [2021-10-21 19:22:25,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:23" (2/3) ... [2021-10-21 19:22:25,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0fec12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:25, skipping insertion in model container [2021-10-21 19:22:25,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:25" (3/3) ... [2021-10-21 19:22:25,620 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-2.i [2021-10-21 19:22:25,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:22:25,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-21 19:22:25,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:22:25,720 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:22:25,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-21 19:22:25,750 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) [2021-10-21 19:22:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:22:25,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:25,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:25,771 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)] === [2021-10-21 19:22:25,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:25,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1853453812, now seen corresponding path program 1 times [2021-10-21 19:22:25,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:25,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183801277] [2021-10-21 19:22:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:25,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:25,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:25,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:25,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:22:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:25,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:22:26,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:26,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:26,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:26,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:26,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183801277] [2021-10-21 19:22:26,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183801277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:26,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:26,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 19:22:26,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844531609] [2021-10-21 19:22:26,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:26,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:26,289 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) [2021-10-21 19:22:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:26,533 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2021-10-21 19:22:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:26,536 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 [2021-10-21 19:22:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:26,549 INFO L225 Difference]: With dead ends: 132 [2021-10-21 19:22:26,549 INFO L226 Difference]: Without dead ends: 129 [2021-10-21 19:22:26,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:26,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-21 19:22:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2021-10-21 19:22:26,616 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) [2021-10-21 19:22:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-10-21 19:22:26,629 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 17 [2021-10-21 19:22:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:26,630 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-10-21 19:22:26,630 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) [2021-10-21 19:22:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-10-21 19:22:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:22:26,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:26,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:26,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:26,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:26,849 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)] === [2021-10-21 19:22:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1853453811, now seen corresponding path program 1 times [2021-10-21 19:22:26,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:26,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830753264] [2021-10-21 19:22:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:26,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:26,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:26,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:22:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:27,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:22:27,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:27,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:27,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:27,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:27,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830753264] [2021-10-21 19:22:27,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830753264] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:27,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:27,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-21 19:22:27,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448321896] [2021-10-21 19:22:27,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:22:27,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:27,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:22:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:22:27,642 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) [2021-10-21 19:22:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:28,189 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2021-10-21 19:22:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:22:28,190 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 [2021-10-21 19:22:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:28,192 INFO L225 Difference]: With dead ends: 128 [2021-10-21 19:22:28,192 INFO L226 Difference]: Without dead ends: 128 [2021-10-21 19:22:28,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 245.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:22:28,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-21 19:22:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2021-10-21 19:22:28,201 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) [2021-10-21 19:22:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2021-10-21 19:22:28,203 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 17 [2021-10-21 19:22:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:28,203 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2021-10-21 19:22:28,203 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) [2021-10-21 19:22:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2021-10-21 19:22:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:22:28,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:28,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:28,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:28,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:28,424 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)] === [2021-10-21 19:22:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1824824661, now seen corresponding path program 1 times [2021-10-21 19:22:28,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:28,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573906839] [2021-10-21 19:22:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:28,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:28,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:28,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:22:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:28,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:22:28,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:28,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:28,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:28,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573906839] [2021-10-21 19:22:28,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573906839] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:28,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:28,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:22:28,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331233920] [2021-10-21 19:22:28,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:28,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:28,840 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) [2021-10-21 19:22:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:28,866 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2021-10-21 19:22:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:28,868 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 [2021-10-21 19:22:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:28,870 INFO L225 Difference]: With dead ends: 122 [2021-10-21 19:22:28,870 INFO L226 Difference]: Without dead ends: 122 [2021-10-21 19:22:28,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-21 19:22:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-21 19:22:28,877 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) [2021-10-21 19:22:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2021-10-21 19:22:28,879 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 17 [2021-10-21 19:22:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:28,879 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2021-10-21 19:22:28,879 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) [2021-10-21 19:22:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2021-10-21 19:22:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:22:28,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:28,881 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] [2021-10-21 19:22:28,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:29,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:29,092 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)] === [2021-10-21 19:22:29,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:29,093 INFO L82 PathProgramCache]: Analyzing trace with hash -779180921, now seen corresponding path program 1 times [2021-10-21 19:22:29,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:29,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002912358] [2021-10-21 19:22:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:29,094 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:29,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:29,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:29,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:22:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:29,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:22:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:29,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:29,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:29,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002912358] [2021-10-21 19:22:29,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002912358] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:29,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:29,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:22:29,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337061232] [2021-10-21 19:22:29,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:29,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:29,545 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) [2021-10-21 19:22:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:29,572 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2021-10-21 19:22:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:22:29,573 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 [2021-10-21 19:22:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:29,575 INFO L225 Difference]: With dead ends: 122 [2021-10-21 19:22:29,575 INFO L226 Difference]: Without dead ends: 122 [2021-10-21 19:22:29,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-21 19:22:29,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-21 19:22:29,594 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) [2021-10-21 19:22:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions. [2021-10-21 19:22:29,596 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 29 [2021-10-21 19:22:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:29,596 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 126 transitions. [2021-10-21 19:22:29,597 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) [2021-10-21 19:22:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions. [2021-10-21 19:22:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:22:29,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:29,599 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] [2021-10-21 19:22:29,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:29,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:29,811 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)] === [2021-10-21 19:22:29,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:29,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1776253274, now seen corresponding path program 1 times [2021-10-21 19:22:29,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:29,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396771728] [2021-10-21 19:22:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:29,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:29,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:29,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:22:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:30,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:22:30,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:30,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:30,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:30,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396771728] [2021-10-21 19:22:30,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396771728] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:30,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:30,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-21 19:22:30,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741946652] [2021-10-21 19:22:30,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:22:30,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:22:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:22:30,355 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) [2021-10-21 19:22:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:30,405 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-10-21 19:22:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:22:30,405 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 [2021-10-21 19:22:30,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:30,407 INFO L225 Difference]: With dead ends: 132 [2021-10-21 19:22:30,407 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 19:22:30,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:22:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 19:22:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-10-21 19:22:30,413 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) [2021-10-21 19:22:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2021-10-21 19:22:30,415 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 29 [2021-10-21 19:22:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:30,415 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2021-10-21 19:22:30,415 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) [2021-10-21 19:22:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2021-10-21 19:22:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 19:22:30,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:30,417 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] [2021-10-21 19:22:30,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:30,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:30,629 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)] === [2021-10-21 19:22:30,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:30,629 INFO L82 PathProgramCache]: Analyzing trace with hash 438885256, now seen corresponding path program 1 times [2021-10-21 19:22:30,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:30,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688191504] [2021-10-21 19:22:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:30,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:30,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:30,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:30,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:22:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:30,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:22:30,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:30,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:31,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:31,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688191504] [2021-10-21 19:22:31,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688191504] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:31,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:31,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:22:31,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291257988] [2021-10-21 19:22:31,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:22:31,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:31,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:22:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:31,132 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) [2021-10-21 19:22:31,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:31,282 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2021-10-21 19:22:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:22:31,282 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 [2021-10-21 19:22:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:31,284 INFO L225 Difference]: With dead ends: 139 [2021-10-21 19:22:31,284 INFO L226 Difference]: Without dead ends: 124 [2021-10-21 19:22:31,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-21 19:22:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2021-10-21 19:22:31,288 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) [2021-10-21 19:22:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-10-21 19:22:31,289 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 27 [2021-10-21 19:22:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:31,289 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-10-21 19:22:31,289 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) [2021-10-21 19:22:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-10-21 19:22:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:22:31,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:31,291 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] [2021-10-21 19:22:31,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:31,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:31,491 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)] === [2021-10-21 19:22:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash -972322523, now seen corresponding path program 1 times [2021-10-21 19:22:31,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:31,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494346102] [2021-10-21 19:22:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:31,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:31,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:31,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:31,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:22:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:31,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:22:31,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:31,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:31,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:31,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494346102] [2021-10-21 19:22:31,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494346102] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:31,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:31,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:22:31,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914447986] [2021-10-21 19:22:31,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:22:31,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:31,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:22:31,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:22:31,939 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) [2021-10-21 19:22:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:31,983 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-10-21 19:22:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:22:31,984 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 [2021-10-21 19:22:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:31,985 INFO L225 Difference]: With dead ends: 122 [2021-10-21 19:22:31,985 INFO L226 Difference]: Without dead ends: 118 [2021-10-21 19:22:31,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:22:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-21 19:22:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-21 19:22:31,989 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) [2021-10-21 19:22:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-10-21 19:22:31,991 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 32 [2021-10-21 19:22:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:31,991 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-10-21 19:22:31,991 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) [2021-10-21 19:22:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-10-21 19:22:31,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:22:31,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:31,993 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] [2021-10-21 19:22:32,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:32,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:32,207 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)] === [2021-10-21 19:22:32,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1413246651, now seen corresponding path program 1 times [2021-10-21 19:22:32,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:32,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731327544] [2021-10-21 19:22:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:32,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:32,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:32,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:22:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:32,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:22:32,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:32,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:32,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:32,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731327544] [2021-10-21 19:22:32,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731327544] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:22:32,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:32,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-21 19:22:32,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123306367] [2021-10-21 19:22:32,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:22:32,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:22:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:22:32,797 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) [2021-10-21 19:22:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:32,997 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2021-10-21 19:22:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:22:32,998 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 [2021-10-21 19:22:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:33,000 INFO L225 Difference]: With dead ends: 126 [2021-10-21 19:22:33,000 INFO L226 Difference]: Without dead ends: 122 [2021-10-21 19:22:33,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 184.8ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:22:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-21 19:22:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-21 19:22:33,005 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) [2021-10-21 19:22:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2021-10-21 19:22:33,006 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 34 [2021-10-21 19:22:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:33,006 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2021-10-21 19:22:33,007 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) [2021-10-21 19:22:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2021-10-21 19:22:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:22:33,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:33,011 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] [2021-10-21 19:22:33,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:33,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:33,224 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)] === [2021-10-21 19:22:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1076819579, now seen corresponding path program 2 times [2021-10-21 19:22:33,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:33,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382961508] [2021-10-21 19:22:33,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:22:33,226 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:33,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:33,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:33,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 19:22:33,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:22:33,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:22:33,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:22:33,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:33,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-21 19:22:33,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-21 19:22:33,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:33,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382961508] [2021-10-21 19:22:33,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382961508] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:33,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:33,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-21 19:22:33,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498614809] [2021-10-21 19:22:33,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:22:33,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:33,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:22:33,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:22:33,995 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) [2021-10-21 19:22:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:34,863 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2021-10-21 19:22:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:22:34,864 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 [2021-10-21 19:22:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:34,865 INFO L225 Difference]: With dead ends: 133 [2021-10-21 19:22:34,865 INFO L226 Difference]: Without dead ends: 133 [2021-10-21 19:22:34,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 252.2ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:22:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-21 19:22:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2021-10-21 19:22:34,869 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) [2021-10-21 19:22:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2021-10-21 19:22:34,870 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 38 [2021-10-21 19:22:34,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:34,871 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2021-10-21 19:22:34,871 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) [2021-10-21 19:22:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2021-10-21 19:22:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:22:34,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:34,872 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] [2021-10-21 19:22:34,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:35,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:35,073 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)] === [2021-10-21 19:22:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1076819578, now seen corresponding path program 1 times [2021-10-21 19:22:35,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:35,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589147726] [2021-10-21 19:22:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:35,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:35,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:35,075 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:35,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 19:22:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:35,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:22:35,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:35,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:36,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:36,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589147726] [2021-10-21 19:22:36,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589147726] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:22:36,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:36,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-21 19:22:36,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123037663] [2021-10-21 19:22:36,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:22:36,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:22:36,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:22:36,043 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) [2021-10-21 19:22:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:36,852 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-10-21 19:22:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:22:36,854 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 [2021-10-21 19:22:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:36,855 INFO L225 Difference]: With dead ends: 133 [2021-10-21 19:22:36,855 INFO L226 Difference]: Without dead ends: 129 [2021-10-21 19:22:36,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 852.1ms TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:22:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-21 19:22:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-10-21 19:22:36,860 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) [2021-10-21 19:22:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2021-10-21 19:22:36,861 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 38 [2021-10-21 19:22:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:36,861 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2021-10-21 19:22:36,862 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) [2021-10-21 19:22:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2021-10-21 19:22:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:22:36,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:36,863 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] [2021-10-21 19:22:36,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:37,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:37,075 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)] === [2021-10-21 19:22:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:37,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2145805818, now seen corresponding path program 2 times [2021-10-21 19:22:37,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:37,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462759924] [2021-10-21 19:22:37,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:22:37,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:37,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:37,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 19:22:37,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:22:37,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:22:37,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:22:37,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:37,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-21 19:22:37,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-10-21 19:22:39,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:39,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462759924] [2021-10-21 19:22:39,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462759924] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:39,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:39,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-21 19:22:39,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657042151] [2021-10-21 19:22:39,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:22:39,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:39,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:22:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:22:39,036 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) [2021-10-21 19:22:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:41,211 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2021-10-21 19:22:41,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:22:41,212 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 [2021-10-21 19:22:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:41,213 INFO L225 Difference]: With dead ends: 128 [2021-10-21 19:22:41,213 INFO L226 Difference]: Without dead ends: 128 [2021-10-21 19:22:41,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1098.3ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:22:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-21 19:22:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-21 19:22:41,218 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) [2021-10-21 19:22:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2021-10-21 19:22:41,219 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 46 [2021-10-21 19:22:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:41,219 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2021-10-21 19:22:41,219 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) [2021-10-21 19:22:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2021-10-21 19:22:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-21 19:22:41,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:41,220 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] [2021-10-21 19:22:41,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:41,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:41,421 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)] === [2021-10-21 19:22:41,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:41,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2091386010, now seen corresponding path program 1 times [2021-10-21 19:22:41,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:41,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839011274] [2021-10-21 19:22:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:41,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:41,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:41,425 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:41,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 19:22:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:41,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:22:41,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:42,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:43,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:43,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839011274] [2021-10-21 19:22:43,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839011274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 19:22:43,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:43,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-21 19:22:43,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057476656] [2021-10-21 19:22:43,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 19:22:43,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 19:22:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:22:43,142 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) [2021-10-21 19:22:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:43,731 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2021-10-21 19:22:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:22:43,732 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 [2021-10-21 19:22:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:43,733 INFO L225 Difference]: With dead ends: 134 [2021-10-21 19:22:43,733 INFO L226 Difference]: Without dead ends: 130 [2021-10-21 19:22:43,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 813.8ms TimeCoverageRelationStatistics Valid=250, Invalid=940, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:22:43,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-21 19:22:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-10-21 19:22:43,738 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) [2021-10-21 19:22:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2021-10-21 19:22:43,739 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 51 [2021-10-21 19:22:43,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:43,740 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 135 transitions. [2021-10-21 19:22:43,740 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) [2021-10-21 19:22:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 135 transitions. [2021-10-21 19:22:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:22:43,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:43,742 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] [2021-10-21 19:22:43,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-21 19:22:43,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:43,955 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)] === [2021-10-21 19:22:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:43,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1898067846, now seen corresponding path program 2 times [2021-10-21 19:22:43,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:43,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103883713] [2021-10-21 19:22:43,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:22:43,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:43,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:43,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:43,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-21 19:22:44,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:22:44,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:22:44,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:22:44,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:44,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:44,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:44,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:44,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103883713] [2021-10-21 19:22:44,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103883713] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:44,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:44,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 11 [2021-10-21 19:22:44,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978139967] [2021-10-21 19:22:44,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:22:44,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:22:44,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:22:44,932 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) [2021-10-21 19:22:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:45,609 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2021-10-21 19:22:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:22:45,609 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 [2021-10-21 19:22:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:45,611 INFO L225 Difference]: With dead ends: 140 [2021-10-21 19:22:45,611 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 19:22:45,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 218.1ms TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:22:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 19:22:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-10-21 19:22:45,615 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) [2021-10-21 19:22:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2021-10-21 19:22:45,619 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 53 [2021-10-21 19:22:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:45,620 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2021-10-21 19:22:45,620 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) [2021-10-21 19:22:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2021-10-21 19:22:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:22:45,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:45,622 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] [2021-10-21 19:22:45,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:45,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:45,822 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)] === [2021-10-21 19:22:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:45,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1898067845, now seen corresponding path program 1 times [2021-10-21 19:22:45,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:45,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661486340] [2021-10-21 19:22:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:45,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:45,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:45,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-21 19:22:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:46,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:22:46,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:46,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:46,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:48,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:48,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661486340] [2021-10-21 19:22:48,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661486340] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:48,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:48,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-21 19:22:48,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095879064] [2021-10-21 19:22:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:22:48,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:22:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:22:48,044 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) [2021-10-21 19:22:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:49,952 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2021-10-21 19:22:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:22:49,953 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 [2021-10-21 19:22:49,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:49,954 INFO L225 Difference]: With dead ends: 126 [2021-10-21 19:22:49,954 INFO L226 Difference]: Without dead ends: 126 [2021-10-21 19:22:49,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1198.9ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:22:49,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-21 19:22:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-21 19:22:49,959 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) [2021-10-21 19:22:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2021-10-21 19:22:49,960 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 53 [2021-10-21 19:22:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:49,961 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2021-10-21 19:22:49,961 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) [2021-10-21 19:22:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2021-10-21 19:22:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-21 19:22:49,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:49,962 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] [2021-10-21 19:22:49,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:50,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:50,172 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)] === [2021-10-21 19:22:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:50,173 INFO L82 PathProgramCache]: Analyzing trace with hash 240730744, now seen corresponding path program 1 times [2021-10-21 19:22:50,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:50,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989512561] [2021-10-21 19:22:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:50,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:50,174 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:50,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-21 19:22:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:50,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:22:50,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:50,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:50,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:50,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989512561] [2021-10-21 19:22:50,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989512561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:50,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:50,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-10-21 19:22:50,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857136011] [2021-10-21 19:22:50,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:22:50,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:22:50,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:22:50,980 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) [2021-10-21 19:22:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:51,030 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2021-10-21 19:22:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:22:51,031 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 [2021-10-21 19:22:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:51,032 INFO L225 Difference]: With dead ends: 128 [2021-10-21 19:22:51,032 INFO L226 Difference]: Without dead ends: 126 [2021-10-21 19:22:51,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:22:51,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-21 19:22:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-21 19:22:51,039 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) [2021-10-21 19:22:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2021-10-21 19:22:51,040 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 58 [2021-10-21 19:22:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:51,041 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2021-10-21 19:22:51,041 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) [2021-10-21 19:22:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2021-10-21 19:22:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-21 19:22:51,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:51,042 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] [2021-10-21 19:22:51,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:51,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:51,243 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)] === [2021-10-21 19:22:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:51,243 INFO L82 PathProgramCache]: Analyzing trace with hash -905772081, now seen corresponding path program 1 times [2021-10-21 19:22:51,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:51,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967127905] [2021-10-21 19:22:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:51,244 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:51,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:51,245 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:51,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-21 19:22:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:51,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:22:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:51,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:52,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:52,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967127905] [2021-10-21 19:22:52,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967127905] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:52,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:52,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-10-21 19:22:52,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316180886] [2021-10-21 19:22:52,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:22:52,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:22:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:22:52,273 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) [2021-10-21 19:22:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:52,384 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2021-10-21 19:22:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:22:52,388 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 [2021-10-21 19:22:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:52,389 INFO L225 Difference]: With dead ends: 130 [2021-10-21 19:22:52,389 INFO L226 Difference]: Without dead ends: 126 [2021-10-21 19:22:52,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:22:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-21 19:22:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-21 19:22:52,393 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) [2021-10-21 19:22:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2021-10-21 19:22:52,394 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 63 [2021-10-21 19:22:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:52,395 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2021-10-21 19:22:52,395 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) [2021-10-21 19:22:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2021-10-21 19:22:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:22:52,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:52,396 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] [2021-10-21 19:22:52,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:52,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:52,600 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)] === [2021-10-21 19:22:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1773831866, now seen corresponding path program 1 times [2021-10-21 19:22:52,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:52,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564378205] [2021-10-21 19:22:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:52,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:52,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:52,602 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:52,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-21 19:22:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:53,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:22:53,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:53,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:53,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:54,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:54,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564378205] [2021-10-21 19:22:54,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564378205] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:54,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:54,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16, 15] imperfect sequences [] total 16 [2021-10-21 19:22:54,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807139510] [2021-10-21 19:22:54,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:22:54,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:22:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:22:54,119 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) [2021-10-21 19:22:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:55,119 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2021-10-21 19:22:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:22:55,120 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 [2021-10-21 19:22:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:55,121 INFO L225 Difference]: With dead ends: 140 [2021-10-21 19:22:55,121 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 19:22:55,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 119 SyntacticMatches, 13 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 437.1ms TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:22:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 19:22:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2021-10-21 19:22:55,130 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) [2021-10-21 19:22:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2021-10-21 19:22:55,131 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 74 [2021-10-21 19:22:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:55,132 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2021-10-21 19:22:55,132 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) [2021-10-21 19:22:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2021-10-21 19:22:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:22:55,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:55,134 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] [2021-10-21 19:22:55,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:55,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:22:55,348 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)] === [2021-10-21 19:22:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:55,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1773831867, now seen corresponding path program 1 times [2021-10-21 19:22:55,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:22:55,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347424464] [2021-10-21 19:22:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:55,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:22:55,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:22:55,350 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:22:55,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-21 19:22:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:55,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-21 19:22:55,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:56,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:22:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:56,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:22:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:22:58,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:22:58,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347424464] [2021-10-21 19:22:58,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347424464] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:58,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:58,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 16] imperfect sequences [] total 32 [2021-10-21 19:22:58,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553417961] [2021-10-21 19:22:58,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-21 19:22:58,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:22:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-21 19:22:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:22:58,844 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) [2021-10-21 19:23:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:01,608 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2021-10-21 19:23:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:23:01,610 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 [2021-10-21 19:23:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:01,611 INFO L225 Difference]: With dead ends: 122 [2021-10-21 19:23:01,611 INFO L226 Difference]: Without dead ends: 122 [2021-10-21 19:23:01,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2185.3ms TimeCoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:23:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-21 19:23:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-21 19:23:01,617 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) [2021-10-21 19:23:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2021-10-21 19:23:01,618 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 74 [2021-10-21 19:23:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:01,619 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2021-10-21 19:23:01,619 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) [2021-10-21 19:23:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2021-10-21 19:23:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-21 19:23:01,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:01,621 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] [2021-10-21 19:23:01,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-21 19:23:01,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:23:01,847 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)] === [2021-10-21 19:23:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:01,848 INFO L82 PathProgramCache]: Analyzing trace with hash 44814492, now seen corresponding path program 1 times [2021-10-21 19:23:01,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:23:01,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883128907] [2021-10-21 19:23:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:01,848 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:23:01,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:23:01,849 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:23:01,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-21 19:23:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:02,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:23:02,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:02,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:23:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:03,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:23:03,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883128907] [2021-10-21 19:23:03,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883128907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:03,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:03,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-10-21 19:23:03,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773613940] [2021-10-21 19:23:03,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:23:03,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:23:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:23:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:23:03,157 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) [2021-10-21 19:23:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:03,236 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2021-10-21 19:23:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:23:03,237 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 [2021-10-21 19:23:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:03,238 INFO L225 Difference]: With dead ends: 124 [2021-10-21 19:23:03,238 INFO L226 Difference]: Without dead ends: 122 [2021-10-21 19:23:03,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:23:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-21 19:23:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-21 19:23:03,242 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) [2021-10-21 19:23:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2021-10-21 19:23:03,243 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 72 [2021-10-21 19:23:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:03,243 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2021-10-21 19:23:03,244 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) [2021-10-21 19:23:03,244 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2021-10-21 19:23:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-21 19:23:03,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:03,250 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] [2021-10-21 19:23:03,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-21 19:23:03,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:23:03,469 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)] === [2021-10-21 19:23:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1162576382, now seen corresponding path program 1 times [2021-10-21 19:23:03,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:23:03,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989990713] [2021-10-21 19:23:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:03,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:23:03,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:23:03,471 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:23:03,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-21 19:23:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:04,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-21 19:23:04,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:04,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:23:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:04,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:23:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:05,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:23:05,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989990713] [2021-10-21 19:23:05,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989990713] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:05,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:05,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20, 19] imperfect sequences [] total 20 [2021-10-21 19:23:05,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529917740] [2021-10-21 19:23:05,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:23:05,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:23:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:23:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:23:05,421 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) [2021-10-21 19:23:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:06,485 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2021-10-21 19:23:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:23:06,486 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 [2021-10-21 19:23:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:06,487 INFO L225 Difference]: With dead ends: 132 [2021-10-21 19:23:06,487 INFO L226 Difference]: Without dead ends: 132 [2021-10-21 19:23:06,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 135 SyntacticMatches, 19 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 668.3ms TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:23:06,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-21 19:23:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-10-21 19:23:06,491 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) [2021-10-21 19:23:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2021-10-21 19:23:06,492 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 87 [2021-10-21 19:23:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:06,492 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2021-10-21 19:23:06,493 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) [2021-10-21 19:23:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2021-10-21 19:23:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-21 19:23:06,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:06,494 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] [2021-10-21 19:23:06,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-21 19:23:06,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:23:06,720 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)] === [2021-10-21 19:23:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:06,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1162576381, now seen corresponding path program 1 times [2021-10-21 19:23:06,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:23:06,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833480051] [2021-10-21 19:23:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:06,721 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:23:06,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:23:06,722 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:23:06,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-21 19:23:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:07,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-21 19:23:07,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:07,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-21 19:23:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:08,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:23:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:10,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:23:10,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833480051] [2021-10-21 19:23:10,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833480051] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:10,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:10,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 20] imperfect sequences [] total 40 [2021-10-21 19:23:10,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282939283] [2021-10-21 19:23:10,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-21 19:23:10,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:23:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-21 19:23:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1525, Unknown=0, NotChecked=0, Total=1640 [2021-10-21 19:23:10,965 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) [2021-10-21 19:23:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:15,212 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2021-10-21 19:23:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:23:15,213 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 [2021-10-21 19:23:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:15,214 INFO L225 Difference]: With dead ends: 118 [2021-10-21 19:23:15,214 INFO L226 Difference]: Without dead ends: 118 [2021-10-21 19:23:15,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3061.4ms TimeCoverageRelationStatistics Valid=170, Invalid=2182, Unknown=0, NotChecked=0, Total=2352 [2021-10-21 19:23:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-21 19:23:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-21 19:23:15,219 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) [2021-10-21 19:23:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2021-10-21 19:23:15,220 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 87 [2021-10-21 19:23:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:15,220 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2021-10-21 19:23:15,221 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) [2021-10-21 19:23:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2021-10-21 19:23:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-21 19:23:15,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:15,222 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] [2021-10-21 19:23:15,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:15,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:23:15,422 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)] === [2021-10-21 19:23:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:15,423 INFO L82 PathProgramCache]: Analyzing trace with hash 303545963, now seen corresponding path program 1 times [2021-10-21 19:23:15,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:23:15,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755178425] [2021-10-21 19:23:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:15,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:23:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:23:15,424 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:23:15,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-21 19:23:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:16,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:23:16,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:17,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:23:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:23:18,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:23:18,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755178425] [2021-10-21 19:23:18,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755178425] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:18,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:18,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 19] imperfect sequences [] total 39 [2021-10-21 19:23:18,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433233501] [2021-10-21 19:23:18,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-21 19:23:18,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:23:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-21 19:23:18,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 19:23:18,497 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) [2021-10-21 19:23:20,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:20,335 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2021-10-21 19:23:20,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:23:20,338 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 [2021-10-21 19:23:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:23:20,339 INFO L225 Difference]: With dead ends: 117 [2021-10-21 19:23:20,339 INFO L226 Difference]: Without dead ends: 117 [2021-10-21 19:23:20,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1547.7ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:23:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-21 19:23:20,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-10-21 19:23:20,343 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) [2021-10-21 19:23:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2021-10-21 19:23:20,344 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 90 [2021-10-21 19:23:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:23:20,345 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2021-10-21 19:23:20,345 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) [2021-10-21 19:23:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2021-10-21 19:23:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-21 19:23:20,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:23:20,347 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] [2021-10-21 19:23:20,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:23:20,548 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)] === [2021-10-21 19:23:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:20,548 INFO L82 PathProgramCache]: Analyzing trace with hash 2031958406, now seen corresponding path program 1 times [2021-10-21 19:23:20,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:23:20,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655519249] [2021-10-21 19:23:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:20,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:23:20,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:23:20,550 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-21 19:23:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:21,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-21 19:23:21,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:21,538 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 [2021-10-21 19:23:21,596 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-21 19:23:21,596 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 [2021-10-21 19:23:21,679 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-10-21 19:23:21,679 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 [2021-10-21 19:23:21,800 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-10-21 19:23:21,800 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 [2021-10-21 19:23:21,970 INFO L354 Elim1Store]: treesize reduction 172, result has 16.9 percent of original size [2021-10-21 19:23:21,970 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 [2021-10-21 19:23:22,153 INFO L354 Elim1Store]: treesize reduction 256, result has 14.7 percent of original size [2021-10-21 19:23:22,153 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 [2021-10-21 19:23:22,402 INFO L354 Elim1Store]: treesize reduction 352, result has 13.3 percent of original size [2021-10-21 19:23:22,402 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 [2021-10-21 19:23:22,732 INFO L354 Elim1Store]: treesize reduction 462, result has 12.2 percent of original size [2021-10-21 19:23:22,732 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 [2021-10-21 19:23:23,187 INFO L354 Elim1Store]: treesize reduction 540, result has 11.6 percent of original size [2021-10-21 19:23:23,187 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 [2021-10-21 19:23:23,798 INFO L354 Elim1Store]: treesize reduction 680, result has 10.5 percent of original size [2021-10-21 19:23:23,798 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 [2021-10-21 19:23:24,451 INFO L354 Elim1Store]: treesize reduction 796, result has 10.1 percent of original size [2021-10-21 19:23:24,451 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 [2021-10-21 19:23:25,146 INFO L354 Elim1Store]: treesize reduction 964, result has 9.2 percent of original size [2021-10-21 19:23:25,147 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 [2021-10-21 19:23:26,006 INFO L354 Elim1Store]: treesize reduction 1100, result has 8.9 percent of original size [2021-10-21 19:23:26,006 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 [2021-10-21 19:23:27,035 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-10-21 19:23:27,035 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 [2021-10-21 19:23:28,236 INFO L354 Elim1Store]: treesize reduction 1452, result has 7.9 percent of original size [2021-10-21 19:23:28,236 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 [2021-10-21 19:23:29,671 INFO L354 Elim1Store]: treesize reduction 1646, result has 7.5 percent of original size [2021-10-21 19:23:29,671 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 [2021-10-21 19:23:34,787 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 [2021-10-21 19:23:36,835 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 [2021-10-21 19:23:36,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:37,075 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:23:37,076 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 [2021-10-21 19:23:41,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 19:23:41,612 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:23:41,612 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 [2021-10-21 19:23:43,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:23:43,836 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 [2021-10-21 19:23:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:44,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:26:02,597 WARN L207 SmtUtils]: Spent 2.21 m on a formula simplification that was a NOOP. DAG size: 152 [2021-10-21 19:26:16,810 WARN L207 SmtUtils]: Spent 12.43 s on a formula simplification that was a NOOP. DAG size: 106 [2021-10-21 19:26:23,980 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 [2021-10-21 19:26:26,073 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 [2021-10-21 19:26:28,319 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 [2021-10-21 19:26:28,604 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:26:28,608 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 [2021-10-21 19:26:44,114 WARN L207 SmtUtils]: Spent 15.50 s on a formula simplification that was a NOOP. DAG size: 2072 [2021-10-21 19:32:51,269 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-21 19:32:51,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-10-21 19:32:51,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:32:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655519249] [2021-10-21 19:32:51,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/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") [2021-10-21 19:32:51,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1451279893] [2021-10-21 19:32:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:51,272 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 19:32:51,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 19:32:51,273 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 19:32:51,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-21 19:32:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:53,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-21 19:32:53,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:32:53,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 19:32:53,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315624414] [2021-10-21 19:32:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:53,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:32:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:32:53,250 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:32:53,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 19:32:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:54,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-21 19:32:54,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:32:54,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-21 19:32:54,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:32:54,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 19:32:54,396 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 19:32:54,396 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 19:32:54,401 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,402 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-21 19:32:54,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-21 19:32:54,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-21 19:32:54,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-21 19:32:54,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-21 19:32:54,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-21 19:32:54,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,410 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:32:54,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-21 19:32:54,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-21 19:32:54,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:32:54,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 19:32:54,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 19:32:54,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-21 19:32:54,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-21 19:32:54,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-21 19:32:54,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-21 19:32:54,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:32:55,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b10ea155-0e9e-4deb-9e41-e94257a446dd/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt [2021-10-21 19:32:55,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:32:55,037 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-21 19:32:55,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:32:55 BoogieIcfgContainer [2021-10-21 19:32:55,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:32:55,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:32:55,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:32:55,049 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:32:55,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:25" (3/4) ... [2021-10-21 19:32:55,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:32:55,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:32:55,053 INFO L168 Benchmark]: Toolchain (without parser) took 631996.47 ms. Allocated memory was 88.1 MB in the beginning and 1.4 GB in the end (delta: 1.4 GB). Free memory was 51.3 MB in the beginning and 1.0 GB in the end (delta: -981.1 MB). Peak memory consumption was 379.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:55,053 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:32:55,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 861.85 ms. Allocated memory is still 88.1 MB. Free memory was 51.1 MB in the beginning and 52.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:55,054 INFO L168 Benchmark]: Boogie Preprocessor took 176.98 ms. Allocated memory is still 88.1 MB. Free memory was 52.3 MB in the beginning and 47.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:55,054 INFO L168 Benchmark]: RCFGBuilder took 1505.74 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 37.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:55,054 INFO L168 Benchmark]: TraceAbstraction took 629436.03 ms. Allocated memory was 88.1 MB in the beginning and 1.4 GB in the end (delta: 1.4 GB). Free memory was 37.2 MB in the beginning and 1.0 GB in the end (delta: -996.2 MB). Peak memory consumption was 362.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:32:55,054 INFO L168 Benchmark]: Witness Printer took 3.48 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:32:55,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 861.85 ms. Allocated memory is still 88.1 MB. Free memory was 51.1 MB in the beginning and 52.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 176.98 ms. Allocated memory is still 88.1 MB. Free memory was 52.3 MB in the beginning and 47.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1505.74 ms. Allocated memory is still 88.1 MB. Free memory was 47.6 MB in the beginning and 37.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 629436.03 ms. Allocated memory was 88.1 MB in the beginning and 1.4 GB in the end (delta: 1.4 GB). Free memory was 37.2 MB in the beginning and 1.0 GB in the end (delta: -996.2 MB). Peak memory consumption was 362.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.48 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification 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: 629352.3ms, OverallIterations: 23, TraceHistogramMax: 16, EmptinessCheckTime: 62.2ms, AutomataDifference: 19590.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2248 SDtfs, 1152 SDslu, 16433 SDs, 0 SdLazy, 8636 SolverSat, 313 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14131.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2216 GetRequests, 1768 SyntacticMatches, 71 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 13167.3ms 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: 192.4ms AutomataMinimizationTime, 22 MinimizatonAttempts, 79 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 346.8ms SsaConstructionTime, 1631.6ms SatisfiabilityAnalysisTime, 21922.3ms 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...