./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 ................................................................................................................................... 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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:31:14,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:31:14,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:31:14,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:31:14,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:31:14,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:31:14,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:31:14,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:31:14,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:31:14,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:31:14,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:31:14,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:31:14,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:31:14,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:31:14,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:31:14,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:31:14,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:31:14,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:31:14,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:31:14,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:31:14,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:31:14,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:31:14,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:31:14,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:31:14,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:31:14,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:31:14,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:31:14,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:31:14,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:31:14,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:31:14,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:31:14,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:31:14,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:31:14,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:31:14,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:31:14,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:31:14,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:31:14,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:31:14,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:31:14,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:31:14,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:31:14,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:31:14,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:31:14,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:31:14,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:31:14,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:31:14,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:31:14,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:31:14,523 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:31:14,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:31:14,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:31:14,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:31:14,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:31:14,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:31:14,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:31:14,526 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:31:14,526 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:31:14,527 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:31:14,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:31:14,527 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:31:14,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:31:14,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:31:14,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:31:14,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:31:14,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:31:14,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:31:14,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:31:14,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:31:14,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:31:14,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:31:14,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:31:14,532 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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 [2021-10-21 19:31:14,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:31:14,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:31:14,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:31:14,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:31:14,873 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:31:14,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-21 19:31:14,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/1ceb1be3f/b93a92f2b22d4bf89cf16f89dcc8ada1/FLAGd97afa45d [2021-10-21 19:31:15,619 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:31:15,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-21 19:31:15,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/1ceb1be3f/b93a92f2b22d4bf89cf16f89dcc8ada1/FLAGd97afa45d [2021-10-21 19:31:15,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/1ceb1be3f/b93a92f2b22d4bf89cf16f89dcc8ada1 [2021-10-21 19:31:15,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:31:15,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:31:15,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:15,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:31:15,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:31:15,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:15" (1/1) ... [2021-10-21 19:31:15,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ef314a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:15, skipping insertion in model container [2021-10-21 19:31:15,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:15" (1/1) ... [2021-10-21 19:31:15,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:31:16,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:31:16,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:16,570 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 19:31:16,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7183cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:16, skipping insertion in model container [2021-10-21 19:31:16,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:16,573 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-21 19:31:16,577 INFO L168 Benchmark]: Toolchain (without parser) took 671.03 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 49.4 MB in the beginning and 82.8 MB in the end (delta: -33.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:16,579 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 56.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:31:16,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.49 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 49.4 MB in the beginning and 82.8 MB in the end (delta: -33.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:31:16,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 56.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 667.49 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 49.4 MB in the beginning and 82.8 MB in the end (delta: -33.4 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 19:31:19,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:31:19,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:31:19,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:31:19,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:31:19,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:31:19,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:31:19,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:31:19,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:31:19,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:31:19,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:31:19,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:31:19,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:31:19,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:31:19,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:31:19,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:31:19,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:31:19,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:31:19,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:31:19,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:31:19,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:31:19,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:31:19,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:31:19,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:31:19,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:31:19,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:31:19,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:31:19,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:31:19,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:31:19,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:31:19,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:31:19,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:31:19,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:31:19,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:31:19,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:31:19,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:31:19,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:31:19,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:31:19,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:31:19,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:31:19,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:31:19,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:31:19,557 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:31:19,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:31:19,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:31:19,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:31:19,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:31:19,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:31:19,562 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:31:19,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:31:19,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:31:19,563 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:31:19,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:31:19,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:31:19,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:31:19,565 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:31:19,565 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:31:19,566 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:31:19,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:31:19,566 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:31:19,566 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:31:19,567 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:31:19,567 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:31:19,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:31:19,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:31:19,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:31:19,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:31:19,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:31:19,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:31:19,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:31:19,570 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:31:19,570 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:31:19,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:31:19,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:31:19,571 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_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f731faf9d41ed60f5858e3dbd50ffba002d2a56a92297f4715b69207f896c11 [2021-10-21 19:31:20,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:31:20,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:31:20,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:31:20,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:31:20,076 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:31:20,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-21 19:31:20,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/e38675ee8/c3bb16c60f7c4c5d8f6f3d33c32dfdad/FLAG4d2990f05 [2021-10-21 19:31:20,995 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:31:20,996 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-21 19:31:21,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/e38675ee8/c3bb16c60f7c4c5d8f6f3d33c32dfdad/FLAG4d2990f05 [2021-10-21 19:31:21,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/data/e38675ee8/c3bb16c60f7c4c5d8f6f3d33c32dfdad [2021-10-21 19:31:21,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:31:21,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:31:21,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:21,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:31:21,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:31:21,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:21" (1/1) ... [2021-10-21 19:31:21,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b811b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:21, skipping insertion in model container [2021-10-21 19:31:21,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:31:21" (1/1) ... [2021-10-21 19:31:21,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:31:21,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:31:21,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:21,849 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-21 19:31:21,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:31:21,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:21,941 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:31:22,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:31:22,085 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:31:22,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22 WrapperNode [2021-10-21 19:31:22,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:31:22,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:31:22,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:31:22,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:31:22,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:31:22,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:31:22,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:31:22,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:31:22,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (1/1) ... [2021-10-21 19:31:22,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:31:22,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:31:22,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:31:22,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:31:22,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:31:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:31:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 19:31:22,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:31:22,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:31:22,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:31:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:31:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:31:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:31:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-21 19:31:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-21 19:31:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-21 19:31:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-21 19:31:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-21 19:31:22,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-21 19:31:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-21 19:31:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-21 19:31:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-21 19:31:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-21 19:31:22,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-21 19:31:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-21 19:31:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-21 19:31:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-21 19:31:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-21 19:31:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-21 19:31:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-21 19:31:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-21 19:31:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-21 19:31:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-21 19:31:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-21 19:31:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-21 19:31:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-21 19:31:22,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-21 19:31:22,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-21 19:31:22,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-21 19:31:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-21 19:31:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-21 19:31:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-21 19:31:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-21 19:31:22,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-21 19:31:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 19:31:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 19:31:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-10-21 19:31:22,349 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-10-21 19:31:22,349 INFO L138 BoogieDeclarations]: Found implementation of procedure probe3_6 [2021-10-21 19:31:22,349 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-10-21 19:31:22,349 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-21 19:31:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:31:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-21 19:31:22,351 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-21 19:31:22,351 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-21 19:31:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:31:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:31:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:31:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:31:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:31:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:31:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:31:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:31:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:31:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:31:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:31:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:31:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:31:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:31:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:31:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:31:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:31:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:31:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:31:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:31:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:31:22,358 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:31:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:31:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:31:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:31:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:31:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:31:22,359 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:31:22,360 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:31:22,360 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:31:22,360 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:31:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:31:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:31:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:31:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:31:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:31:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:31:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:31:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:31:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:31:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:31:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:31:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:31:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:31:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:31:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:31:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:31:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:31:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:31:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:31:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:31:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:31:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:31:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:31:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:31:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:31:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:31:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:31:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:31:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:31:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:31:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:31:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:31:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:31:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:31:22,367 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:31:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:31:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:31:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:31:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:31:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:31:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:31:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:31:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:31:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:31:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:31:22,374 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:31:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:31:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:31:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:31:22,377 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:31:22,378 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:31:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:31:22,383 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:31:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:31:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:31:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:31:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:31:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:31:22,384 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:31:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:31:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:31:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:31:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:31:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:31:22,385 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:31:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:31:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:31:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:31:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:31:22,386 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:31:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:31:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:31:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:31:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:31:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:31:22,387 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:31:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-21 19:31:22,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:31:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-21 19:31:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-21 19:31:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-21 19:31:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-21 19:31:22,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-21 19:31:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:31:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-21 19:31:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-21 19:31:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-21 19:31:22,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:31:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-21 19:31:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-21 19:31:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-21 19:31:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:31:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-21 19:31:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-21 19:31:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-21 19:31:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-21 19:31:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-21 19:31:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-21 19:31:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:31:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-21 19:31:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-21 19:31:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-21 19:31:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-21 19:31:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-21 19:31:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 19:31:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 19:31:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-21 19:31:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-21 19:31:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-21 19:31:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-21 19:31:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-21 19:31:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-21 19:31:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-21 19:31:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-21 19:31:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-21 19:31:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-21 19:31:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-21 19:31:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-21 19:31:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-21 19:31:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-21 19:31:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-21 19:31:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 19:31:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 19:31:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-10-21 19:31:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-10-21 19:31:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure probe3_6 [2021-10-21 19:31:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-10-21 19:31:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-21 19:31:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:31:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-21 19:31:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-21 19:31:23,098 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:31:23,643 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-21 19:31:24,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:31:24,121 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 19:31:24,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:24 BoogieIcfgContainer [2021-10-21 19:31:24,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:31:24,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:31:24,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:31:24,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:31:24,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:31:21" (1/3) ... [2021-10-21 19:31:24,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65274d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:31:24, skipping insertion in model container [2021-10-21 19:31:24,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:31:22" (2/3) ... [2021-10-21 19:31:24,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65274d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:31:24, skipping insertion in model container [2021-10-21 19:31:24,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:24" (3/3) ... [2021-10-21 19:31:24,138 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_2.i [2021-10-21 19:31:24,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:31:24,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2021-10-21 19:31:24,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:31:24,209 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 19:31:24,209 INFO L340 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2021-10-21 19:31:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-21 19:31:24,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:31:24,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:24,244 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] [2021-10-21 19:31:24,245 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:24,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2083337596, now seen corresponding path program 1 times [2021-10-21 19:31:24,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:24,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352350787] [2021-10-21 19:31:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:24,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:24,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:24,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:31:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:24,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:31:24,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:24,794 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 19:31:24,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:24,976 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 19:31:24,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:24,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352350787] [2021-10-21 19:31:24,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352350787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:24,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:24,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:31:24,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241515423] [2021-10-21 19:31:24,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:31:24,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:31:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:25,022 INFO L87 Difference]: Start difference. First operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 19:31:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:25,156 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-10-21 19:31:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:31:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 20 [2021-10-21 19:31:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:25,174 INFO L225 Difference]: With dead ends: 94 [2021-10-21 19:31:25,175 INFO L226 Difference]: Without dead ends: 91 [2021-10-21 19:31:25,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-21 19:31:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2021-10-21 19:31:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 54 states have internal predecessors, (58), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 19:31:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-10-21 19:31:25,246 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 20 [2021-10-21 19:31:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:25,247 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-10-21 19:31:25,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 19:31:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-10-21 19:31:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:31:25,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:25,250 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] [2021-10-21 19:31:25,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:25,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:25,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:25,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116195, now seen corresponding path program 1 times [2021-10-21 19:31:25,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:25,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948475479] [2021-10-21 19:31:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:25,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:25,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:25,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:31:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:25,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:31:25,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:25,797 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 19:31:25,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 19:31:26,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 19:31:26,092 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 19:31:26,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:26,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-21 19:31:26,436 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 19:31:26,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:26,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948475479] [2021-10-21 19:31:26,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948475479] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:26,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:26,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 19:31:26,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590575367] [2021-10-21 19:31:26,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:31:26,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:31:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:26,447 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-21 19:31:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:26,685 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-10-21 19:31:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:31:26,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-10-21 19:31:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:26,692 INFO L225 Difference]: With dead ends: 111 [2021-10-21 19:31:26,692 INFO L226 Difference]: Without dead ends: 108 [2021-10-21 19:31:26,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:31:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-21 19:31:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2021-10-21 19:31:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.5) internal successors, (63), 58 states have internal predecessors, (63), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-21 19:31:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-21 19:31:26,710 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 20 [2021-10-21 19:31:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:26,711 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-21 19:31:26,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-21 19:31:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-21 19:31:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:31:26,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:26,713 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] [2021-10-21 19:31:26,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:26,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:26,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:26,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116196, now seen corresponding path program 1 times [2021-10-21 19:31:26,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:26,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491869474] [2021-10-21 19:31:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:26,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:26,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:26,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:26,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:31:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:27,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:31:27,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:27,216 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-21 19:31:27,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-21 19:31:27,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-21 19:31:27,463 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 19:31:27,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:27,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-21 19:31:28,133 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 19:31:28,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:28,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491869474] [2021-10-21 19:31:28,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491869474] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:28,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:28,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-21 19:31:28,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296803961] [2021-10-21 19:31:28,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:31:28,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:31:28,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:31:28,136 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:31:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:28,464 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-21 19:31:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:31:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-10-21 19:31:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:28,467 INFO L225 Difference]: With dead ends: 125 [2021-10-21 19:31:28,467 INFO L226 Difference]: Without dead ends: 124 [2021-10-21 19:31:28,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:31:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-21 19:31:28,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2021-10-21 19:31:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 83 states have internal predecessors, (103), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-21 19:31:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-10-21 19:31:28,480 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 20 [2021-10-21 19:31:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:28,480 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-10-21 19:31:28,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 19:31:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-10-21 19:31:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:31:28,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:28,482 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] [2021-10-21 19:31:28,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:28,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:28,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:28,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1702507591, now seen corresponding path program 1 times [2021-10-21 19:31:28,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:28,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253665312] [2021-10-21 19:31:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:28,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:28,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:28,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:31:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:28,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:31:28,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:29,067 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 19:31:29,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:29,162 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 19:31:29,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:29,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253665312] [2021-10-21 19:31:29,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253665312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:29,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:29,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 19:31:29,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806815806] [2021-10-21 19:31:29,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:31:29,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:31:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:29,166 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:31:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:29,200 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-10-21 19:31:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:31:29,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-10-21 19:31:29,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:29,203 INFO L225 Difference]: With dead ends: 104 [2021-10-21 19:31:29,203 INFO L226 Difference]: Without dead ends: 104 [2021-10-21 19:31:29,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-21 19:31:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-21 19:31:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 81 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-21 19:31:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2021-10-21 19:31:29,214 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 22 [2021-10-21 19:31:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:29,214 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2021-10-21 19:31:29,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:31:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2021-10-21 19:31:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:31:29,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:29,216 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] [2021-10-21 19:31:29,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:29,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:29,430 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:29,430 INFO L82 PathProgramCache]: Analyzing trace with hash -503576158, now seen corresponding path program 1 times [2021-10-21 19:31:29,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:29,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693502242] [2021-10-21 19:31:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:29,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:29,432 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:29,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:31:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:29,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:31:29,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:29,776 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 19:31:29,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:29,917 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 19:31:29,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:29,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693502242] [2021-10-21 19:31:29,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693502242] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:29,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:29,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-21 19:31:29,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137933393] [2021-10-21 19:31:29,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:31:29,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:31:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:31:29,919 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:31:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:29,996 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2021-10-21 19:31:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:31:29,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-10-21 19:31:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:29,998 INFO L225 Difference]: With dead ends: 118 [2021-10-21 19:31:29,998 INFO L226 Difference]: Without dead ends: 114 [2021-10-21 19:31:29,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:31:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-21 19:31:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-10-21 19:31:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 69 states have (on average 1.463768115942029) internal successors, (101), 84 states have internal predecessors, (101), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 19:31:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2021-10-21 19:31:30,010 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 22 [2021-10-21 19:31:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:30,010 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2021-10-21 19:31:30,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:31:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2021-10-21 19:31:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:31:30,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:30,012 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] [2021-10-21 19:31:30,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:30,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:30,217 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:30,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:30,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1238127481, now seen corresponding path program 1 times [2021-10-21 19:31:30,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:30,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387504824] [2021-10-21 19:31:30,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:30,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:30,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:30,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:30,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:31:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:30,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:31:30,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:30,827 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 19:31:30,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:31,001 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 19:31:31,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:31,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387504824] [2021-10-21 19:31:31,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387504824] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:31,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:31,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-21 19:31:31,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951264151] [2021-10-21 19:31:31,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:31:31,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:31:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:31:31,004 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 19:31:31,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:31,356 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2021-10-21 19:31:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:31:31,357 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-10-21 19:31:31,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:31,358 INFO L225 Difference]: With dead ends: 118 [2021-10-21 19:31:31,359 INFO L226 Difference]: Without dead ends: 118 [2021-10-21 19:31:31,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:31:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-21 19:31:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-10-21 19:31:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 82 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 19:31:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-10-21 19:31:31,370 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 23 [2021-10-21 19:31:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:31,370 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-10-21 19:31:31,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-21 19:31:31,371 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-10-21 19:31:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:31:31,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:31,372 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] [2021-10-21 19:31:31,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:31,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:31,589 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:31,589 INFO L82 PathProgramCache]: Analyzing trace with hash 272754043, now seen corresponding path program 1 times [2021-10-21 19:31:31,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:31,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006607232] [2021-10-21 19:31:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:31,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:31,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:31,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:31,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:31:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:31,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:31:31,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:31,847 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 19:31:31,973 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 19:31:31,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:32,113 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 19:31:32,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:32,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006607232] [2021-10-21 19:31:32,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006607232] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:32,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:32,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-21 19:31:32,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106352210] [2021-10-21 19:31:32,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:31:32,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:31:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:31:32,116 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:31:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:32,307 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-10-21 19:31:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:31:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-21 19:31:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:32,309 INFO L225 Difference]: With dead ends: 108 [2021-10-21 19:31:32,309 INFO L226 Difference]: Without dead ends: 108 [2021-10-21 19:31:32,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 55.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:31:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-21 19:31:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2021-10-21 19:31:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 82 states have internal predecessors, (95), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-21 19:31:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-10-21 19:31:32,318 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 24 [2021-10-21 19:31:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:32,318 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-10-21 19:31:32,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:31:32,319 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-10-21 19:31:32,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:31:32,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:32,320 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] [2021-10-21 19:31:32,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:32,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:32,533 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:32,534 INFO L82 PathProgramCache]: Analyzing trace with hash -232804582, now seen corresponding path program 1 times [2021-10-21 19:31:32,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:32,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923330577] [2021-10-21 19:31:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:32,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:32,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:32,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:32,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:31:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:32,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:31:32,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:32,894 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 19:31:32,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:33,030 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 19:31:33,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:33,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923330577] [2021-10-21 19:31:33,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923330577] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:33,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:33,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:31:33,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91875752] [2021-10-21 19:31:33,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:31:33,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:31:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:33,033 INFO L87 Difference]: Start difference. First operand 106 states and 120 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, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:31:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:33,068 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-10-21 19:31:33,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:31:33,073 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, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-21 19:31:33,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:33,074 INFO L225 Difference]: With dead ends: 68 [2021-10-21 19:31:33,074 INFO L226 Difference]: Without dead ends: 64 [2021-10-21 19:31:33,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:31:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-21 19:31:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-21 19:31:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 48 states have internal predecessors, (50), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 19:31:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-21 19:31:33,078 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 24 [2021-10-21 19:31:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:33,079 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-21 19:31:33,079 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, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 19:31:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-21 19:31:33,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:31:33,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:33,080 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] [2021-10-21 19:31:33,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:33,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:33,294 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe3_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:33,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319562, now seen corresponding path program 1 times [2021-10-21 19:31:33,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:33,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032198290] [2021-10-21 19:31:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:33,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:33,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:33,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:33,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 19:31:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:33,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:31:33,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:33,594 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 19:31:33,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 19:31:33,843 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-21 19:31:33,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-10-21 19:31:34,028 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 19:31:34,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:34,323 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 19:31:34,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:34,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032198290] [2021-10-21 19:31:34,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032198290] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:34,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:34,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-10-21 19:31:34,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644287491] [2021-10-21 19:31:34,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:31:34,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:31:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:31:34,326 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 19:31:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:34,814 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-21 19:31:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:31:34,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-10-21 19:31:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:34,816 INFO L225 Difference]: With dead ends: 63 [2021-10-21 19:31:34,816 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 19:31:34,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 373.3ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:31:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 19:31:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-21 19:31:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 47 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 19:31:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2021-10-21 19:31:34,820 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 28 [2021-10-21 19:31:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:34,820 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2021-10-21 19:31:34,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-21 19:31:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2021-10-21 19:31:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:31:34,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:34,822 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] [2021-10-21 19:31:34,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:35,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:35,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe3_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:35,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319563, now seen corresponding path program 1 times [2021-10-21 19:31:35,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:35,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596296119] [2021-10-21 19:31:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:35,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:35,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:35,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:35,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 19:31:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:35,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:31:35,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:35,344 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-21 19:31:35,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-21 19:31:39,595 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 19:31:39,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-21 19:31:39,846 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 19:31:39,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:42,180 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 19:31:42,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:42,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596296119] [2021-10-21 19:31:42,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596296119] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:42,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:42,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-21 19:31:42,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387296265] [2021-10-21 19:31:42,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:31:42,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:31:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-21 19:31:42,183 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 19:31:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:31:54,649 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-21 19:31:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:31:54,650 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-10-21 19:31:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:31:54,651 INFO L225 Difference]: With dead ends: 61 [2021-10-21 19:31:54,651 INFO L226 Difference]: Without dead ends: 61 [2021-10-21 19:31:54,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6915.5ms TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-10-21 19:31:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-21 19:31:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-21 19:31:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.236842105263158) internal successors, (47), 45 states have internal predecessors, (47), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-21 19:31:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-21 19:31:54,655 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 28 [2021-10-21 19:31:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:31:54,655 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-21 19:31:54,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-21 19:31:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-21 19:31:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-21 19:31:54,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:31:54,657 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 19:31:54,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:31:54,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:31:54,880 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:31:54,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:31:54,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1727877462, now seen corresponding path program 1 times [2021-10-21 19:31:54,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:31:54,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084812886] [2021-10-21 19:31:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:31:54,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:31:54,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:31:54,884 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:31:54,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 19:31:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:31:55,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:31:55,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:31:55,285 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 19:31:55,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 19:31:55,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 19:31:55,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-10-21 19:31:55,811 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-21 19:31:55,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 31 [2021-10-21 19:31:55,885 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 19:31:55,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:31:56,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-21 19:31:56,617 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 19:31:56,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:31:56,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084812886] [2021-10-21 19:31:56,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084812886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:31:56,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:31:56,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-21 19:31:56,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560393678] [2021-10-21 19:31:56,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:31:56,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:31:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:31:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:31:56,620 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 19:32:21,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:32:21,371 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2021-10-21 19:32:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:32:21,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-10-21 19:32:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:32:21,373 INFO L225 Difference]: With dead ends: 65 [2021-10-21 19:32:21,373 INFO L226 Difference]: Without dead ends: 54 [2021-10-21 19:32:21,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4588.5ms TimeCoverageRelationStatistics Valid=74, Invalid=231, Unknown=1, NotChecked=0, Total=306 [2021-10-21 19:32:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-21 19:32:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-21 19:32:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.1875) internal successors, (38), 38 states have internal predecessors, (38), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 19:32:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2021-10-21 19:32:21,376 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 29 [2021-10-21 19:32:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:32:21,377 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2021-10-21 19:32:21,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 19:32:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2021-10-21 19:32:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:32:21,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:32:21,379 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, 1, 1, 1, 1, 1, 1] [2021-10-21 19:32:21,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-21 19:32:21,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:32:21,589 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:32:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:32:21,590 INFO L82 PathProgramCache]: Analyzing trace with hash 764373490, now seen corresponding path program 1 times [2021-10-21 19:32:21,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:32:21,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721532204] [2021-10-21 19:32:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:32:21,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:32:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:32:21,591 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:32:21,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-21 19:32:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:32:21,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:32:21,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:32:21,979 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-21 19:32:21,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-21 19:32:22,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-21 19:32:22,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-10-21 19:32:22,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-10-21 19:32:26,850 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-21 19:32:26,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 47 [2021-10-21 19:32:27,028 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 19:32:27,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:32:27,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-21 19:32:30,510 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 19:32:30,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:32:30,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721532204] [2021-10-21 19:32:30,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721532204] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:32:30,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:32:30,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 10] imperfect sequences [] total 21 [2021-10-21 19:32:30,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747136884] [2021-10-21 19:32:30,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:32:30,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:32:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:32:30,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=377, Unknown=2, NotChecked=0, Total=462 [2021-10-21 19:32:30,513 INFO L87 Difference]: Start difference. First operand 54 states and 53 transitions. Second operand has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-21 19:33:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:29,799 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2021-10-21 19:33:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:33:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 38 [2021-10-21 19:33:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:29,801 INFO L225 Difference]: With dead ends: 53 [2021-10-21 19:33:29,801 INFO L226 Difference]: Without dead ends: 53 [2021-10-21 19:33:29,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 15458.6ms TimeCoverageRelationStatistics Valid=175, Invalid=749, Unknown=6, NotChecked=0, Total=930 [2021-10-21 19:33:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-21 19:33:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-21 19:33:29,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.15625) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 19:33:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 52 transitions. [2021-10-21 19:33:29,809 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 52 transitions. Word has length 38 [2021-10-21 19:33:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:29,809 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 52 transitions. [2021-10-21 19:33:29,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-21 19:33:29,810 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 52 transitions. [2021-10-21 19:33:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:33:29,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:29,811 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, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:29,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-21 19:33:30,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:33:30,025 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting disconnect_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:33:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:30,026 INFO L82 PathProgramCache]: Analyzing trace with hash 764373491, now seen corresponding path program 1 times [2021-10-21 19:33:30,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:33:30,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396991482] [2021-10-21 19:33:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:30,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:33:30,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:33:30,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:33:30,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-21 19:33:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:33:30,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:30,909 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 19:33:30,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:33:31,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-21 19:33:31,570 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:33:31,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-21 19:33:32,203 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 19:33:32,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:33:32,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396991482] [2021-10-21 19:33:32,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396991482] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:32,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:32,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-21 19:33:32,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682564851] [2021-10-21 19:33:32,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:33:32,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:33:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:33:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:33:32,206 INFO L87 Difference]: Start difference. First operand 53 states and 52 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-21 19:33:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:32,777 INFO L93 Difference]: Finished difference Result 52 states and 51 transitions. [2021-10-21 19:33:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:33:32,778 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 38 [2021-10-21 19:33:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:32,779 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:33:32,779 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:33:32,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 780.9ms TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:33:32,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:33:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-21 19:33:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 19:33:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 51 transitions. [2021-10-21 19:33:32,782 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 51 transitions. Word has length 38 [2021-10-21 19:33:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:32,783 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 51 transitions. [2021-10-21 19:33:32,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-21 19:33:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 51 transitions. [2021-10-21 19:33:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 19:33:32,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:32,785 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:32,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:32,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:33:32,989 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:33:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:32,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2074225181, now seen corresponding path program 1 times [2021-10-21 19:33:32,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:33:32,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112603019] [2021-10-21 19:33:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:32,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:33:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:33:32,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:33:32,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-21 19:33:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:33,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:33:33,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:33,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-21 19:33:33,831 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 15 treesize of output 7 [2021-10-21 19:33:33,852 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 19:33:33,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:33:34,038 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 28 treesize of output 24 [2021-10-21 19:33:34,314 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 19:33:34,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:33:34,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112603019] [2021-10-21 19:33:34,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112603019] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:34,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:34,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-21 19:33:34,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761235589] [2021-10-21 19:33:34,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:33:34,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:33:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:33:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:33:34,316 INFO L87 Difference]: Start difference. First operand 52 states and 51 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:33:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:34,816 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2021-10-21 19:33:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:33:34,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2021-10-21 19:33:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:34,818 INFO L225 Difference]: With dead ends: 51 [2021-10-21 19:33:34,818 INFO L226 Difference]: Without dead ends: 51 [2021-10-21 19:33:34,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 353.4ms TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:33:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-21 19:33:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-21 19:33:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 19:33:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 50 transitions. [2021-10-21 19:33:34,822 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 50 transitions. Word has length 39 [2021-10-21 19:33:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:34,823 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 50 transitions. [2021-10-21 19:33:34,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:33:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 50 transitions. [2021-10-21 19:33:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-21 19:33:34,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:34,824 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:34,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:35,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:33:35,029 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:33:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:35,030 INFO L82 PathProgramCache]: Analyzing trace with hash 123529298, now seen corresponding path program 1 times [2021-10-21 19:33:35,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:33:35,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357643412] [2021-10-21 19:33:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:35,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:33:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:33:35,031 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:33:35,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-21 19:33:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:35,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:33:35,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:33:36,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-21 19:33:36,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-21 19:33:36,657 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 19:33:36,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:33:37,233 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 28 treesize of output 24 [2021-10-21 19:33:37,908 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 19:33:37,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:33:37,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357643412] [2021-10-21 19:33:37,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357643412] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:37,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:37,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [] total 23 [2021-10-21 19:33:37,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409806540] [2021-10-21 19:33:37,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-21 19:33:37,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:33:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-21 19:33:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:33:37,916 INFO L87 Difference]: Start difference. First operand 51 states and 50 transitions. Second operand has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-21 19:33:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:39,575 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2021-10-21 19:33:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:33:39,576 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 40 [2021-10-21 19:33:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:33:39,577 INFO L225 Difference]: With dead ends: 50 [2021-10-21 19:33:39,577 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 19:33:39,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1742.3ms TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:33:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 19:33:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-21 19:33:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.0625) internal successors, (34), 34 states have internal predecessors, (34), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-21 19:33:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2021-10-21 19:33:39,581 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 40 [2021-10-21 19:33:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:33:39,581 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2021-10-21 19:33:39,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-21 19:33:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2021-10-21 19:33:39,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-21 19:33:39,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:33:39,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:39,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:39,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:33:39,794 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-21 19:33:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:39,794 INFO L82 PathProgramCache]: Analyzing trace with hash -465558587, now seen corresponding path program 1 times [2021-10-21 19:33:39,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:33:39,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552212109] [2021-10-21 19:33:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:39,795 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:33:39,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:33:39,797 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:33:39,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-21 19:33:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:40,258 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:40,355 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:33:40,356 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:33:40,357 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-21 19:33:40,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-21 19:33:40,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-21 19:33:40,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-21 19:33:40,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-21 19:33:40,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-21 19:33:40,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err0REQUIRES_VIOLATION [2021-10-21 19:33:40,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err1REQUIRES_VIOLATION [2021-10-21 19:33:40,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:33:40,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-21 19:33:40,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-21 19:33:40,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-21 19:33:40,374 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-21 19:33:40,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-21 19:33:40,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-21 19:33:40,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-10-21 19:33:40,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-10-21 19:33:40,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:33:40,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:33:40,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:33:40,599 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:33:40,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:33:40 BoogieIcfgContainer [2021-10-21 19:33:40,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:33:40,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:33:40,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:33:40,647 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:33:40,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:31:24" (3/4) ... [2021-10-21 19:33:40,650 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:33:40,722 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:33:40,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:33:40,723 INFO L168 Benchmark]: Toolchain (without parser) took 139483.42 ms. Allocated memory was 52.4 MB in the beginning and 111.1 MB in the end (delta: 58.7 MB). Free memory was 28.0 MB in the beginning and 47.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:40,723 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:33:40,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 842.56 ms. Allocated memory was 52.4 MB in the beginning and 86.0 MB in the end (delta: 33.6 MB). Free memory was 27.8 MB in the beginning and 51.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:40,724 INFO L168 Benchmark]: Boogie Preprocessor took 147.53 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 67.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:40,725 INFO L168 Benchmark]: RCFGBuilder took 1889.42 ms. Allocated memory is still 86.0 MB. Free memory was 67.2 MB in the beginning and 49.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:40,725 INFO L168 Benchmark]: TraceAbstraction took 136516.57 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 48.9 MB in the beginning and 49.8 MB in the end (delta: -922.4 kB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:40,726 INFO L168 Benchmark]: Witness Printer took 75.09 ms. Allocated memory is still 111.1 MB. Free memory was 49.8 MB in the beginning and 47.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:33:40,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 842.56 ms. Allocated memory was 52.4 MB in the beginning and 86.0 MB in the end (delta: 33.6 MB). Free memory was 27.8 MB in the beginning and 51.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 147.53 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 67.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1889.42 ms. Allocated memory is still 86.0 MB. Free memory was 67.2 MB in the beginning and 49.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 136516.57 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 48.9 MB in the beginning and 49.8 MB in the end (delta: -922.4 kB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. * Witness Printer took 75.09 ms. Allocated memory is still 111.1 MB. Free memory was 49.8 MB in the beginning and 47.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 782]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L784] struct A a6; VAL [\old(a6)=null, \old(a6)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L793] CALL entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L786] CALL, EXPR probe3_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L764] int ret = - -3; VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ldv_malloc(sizeof(int))={1:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] CALL, EXPR f6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() VAL [a={3:0}, a={3:0}, a6={3:0}, f6()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] ret = f6() [L769] COND FALSE !(ret<0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] CALL, EXPR g6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() VAL [a={3:0}, a={3:0}, a6={3:0}, g6()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L774] a->p = p VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) [L776] return 0; VAL [\result=0, a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L786] RET, EXPR probe3_6(&a6) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, probe3_6(&a6)=0] [L786] int ret = probe3_6(&a6); [L787] COND TRUE ret==0 VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=0] [L788] CALL disconnect_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] EXPR a->p VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free 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: 792]: 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: 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. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 379 locations, 86 error locations. Started 1 CEGAR loops. OverallTime: 136396.3ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 34.2ms, AutomataDifference: 101231.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 790 SDtfs, 1229 SDslu, 2395 SDs, 0 SdLazy, 1901 SolverSat, 329 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 84835.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 639 SyntacticMatches, 49 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 30720.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=0, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 148.8ms AutomataMinimizationTime, 15 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 194.0ms SsaConstructionTime, 675.4ms SatisfiabilityAnalysisTime, 26477.6ms InterpolantComputationTime, 456 NumberOfCodeBlocks, 456 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 800 ConstructedInterpolants, 71 QuantifiedInterpolants, 6419 SizeOfPredicates, 72 NumberOfNonLiveVariables, 1767 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:33:40,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ddaf6d-dfd1-43ce-baa0-be0892dfd591/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...