./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y --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 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:29:56,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:29:56,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:29:56,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:29:56,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:29:56,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:29:56,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:29:56,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:29:56,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:29:56,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:29:56,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:29:56,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:29:56,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:29:56,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:29:56,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:29:56,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:29:56,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:29:56,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:29:56,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:29:56,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:29:56,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:29:56,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:29:56,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:29:56,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:29:56,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:29:56,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:29:56,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:29:56,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:29:56,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:29:56,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:29:56,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:29:56,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:29:56,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:29:56,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:29:56,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:29:56,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:29:56,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:29:56,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:29:56,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:29:56,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:29:56,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:29:56,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:29:56,494 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:29:56,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:29:56,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:29:56,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:29:56,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:29:56,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:29:56,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:29:56,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:29:56,498 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:29:56,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:29:56,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:29:56,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:29:56,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:29:56,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:29:56,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:29:56,501 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:29:56,501 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:29:56,501 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:29:56,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:29:56,501 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:29:56,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:29:56,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:29:56,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:29:56,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:29:56,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:29:56,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:29:56,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:29:56,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:29:56,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:29:56,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:29:56,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:29:56,505 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_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2021-11-13 18:29:56,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:29:56,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:29:56,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:29:56,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:29:56,789 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:29:56,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2021-11-13 18:29:56,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/03b90453e/210d554821154aa397d8555459de599d/FLAG5915266c6 [2021-11-13 18:29:57,470 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:29:57,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2021-11-13 18:29:57,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/03b90453e/210d554821154aa397d8555459de599d/FLAG5915266c6 [2021-11-13 18:29:57,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/03b90453e/210d554821154aa397d8555459de599d [2021-11-13 18:29:57,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:29:57,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:29:57,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:29:57,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:29:57,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:29:57,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:29:57" (1/1) ... [2021-11-13 18:29:57,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444eb7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:57, skipping insertion in model container [2021-11-13 18:29:57,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:29:57" (1/1) ... [2021-11-13 18:29:57,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:29:57,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:29:58,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:29:58,228 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) [2021-11-13 18:29:58,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ca81c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:58, skipping insertion in model container [2021-11-13 18:29:58,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:29:58,229 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:29:58,231 INFO L158 Benchmark]: Toolchain (without parser) took 514.63ms. Allocated memory is still 94.4MB. Free memory was 59.1MB in the beginning and 66.4MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:29:58,232 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 66.3MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:29:58,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.25ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 66.4MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:29:58,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 66.3MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 510.25ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 66.4MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y --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 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:30:00,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:30:00,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:30:00,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:30:00,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:30:00,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:30:00,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:30:00,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:30:00,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:30:00,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:30:00,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:30:00,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:30:00,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:30:00,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:30:00,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:30:00,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:30:00,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:30:00,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:30:00,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:30:00,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:30:00,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:30:00,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:30:00,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:30:00,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:30:00,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:30:00,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:30:00,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:30:00,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:30:00,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:30:00,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:30:00,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:30:00,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:30:00,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:30:00,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:30:00,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:30:00,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:30:00,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:30:00,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:30:00,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:30:00,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:30:00,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:30:00,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:30:00,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:30:00,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:30:00,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:30:00,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:30:00,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:30:00,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:30:00,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:30:00,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:30:00,671 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:30:00,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:30:00,672 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:30:00,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:30:00,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:30:00,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:30:00,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:30:00,673 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:30:00,673 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:30:00,674 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:30:00,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:30:00,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:30:00,674 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:30:00,674 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:30:00,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:30:00,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:30:00,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:30:00,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:30:00,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:30:00,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:30:00,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:30:00,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:30:00,677 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:30:00,677 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:30:00,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:30:00,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:30:00,677 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_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2021-11-13 18:30:01,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:30:01,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:30:01,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:30:01,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:30:01,104 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:30:01,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2021-11-13 18:30:01,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/6425d205a/67bc77760e5b4655890c3c0aae489287/FLAGf459195f4 [2021-11-13 18:30:01,801 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:30:01,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2021-11-13 18:30:01,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/6425d205a/67bc77760e5b4655890c3c0aae489287/FLAGf459195f4 [2021-11-13 18:30:02,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/data/6425d205a/67bc77760e5b4655890c3c0aae489287 [2021-11-13 18:30:02,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:30:02,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:30:02,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:30:02,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:30:02,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:30:02,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207f4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02, skipping insertion in model container [2021-11-13 18:30:02,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:30:02,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:30:02,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:30:02,580 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:30:02,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:30:02,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:30:02,713 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:30:02,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:30:02,867 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:30:02,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02 WrapperNode [2021-11-13 18:30:02,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:30:02,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:30:02,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:30:02,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:30:02,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:30:02,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:30:02,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:30:02,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:30:02,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (1/1) ... [2021-11-13 18:30:02,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:30:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:30:03,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:30:03,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:30:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:30:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:30:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:30:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:30:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:30:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:30:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:30:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:30:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:30:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-11-13 18:30:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-11-13 18:30:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:30:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:30:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-13 18:30:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-13 18:30:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-11-13 18:30:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-13 18:30:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-11-13 18:30:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-13 18:30:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-11-13 18:30:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-11-13 18:30:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-11-13 18:30:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-11-13 18:30:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-11-13 18:30:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-13 18:30:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 18:30:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-11-13 18:30:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-11-13 18:30:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-11-13 18:30:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-11-13 18:30:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-11-13 18:30:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-11-13 18:30:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-11-13 18:30:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-11-13 18:30:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-11-13 18:30:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-11-13 18:30:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-11-13 18:30:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-11-13 18:30:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-11-13 18:30:03,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-11-13 18:30:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-13 18:30:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-13 18:30:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-11-13 18:30:03,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:30:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:30:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:30:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:30:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:30:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:30:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:30:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:30:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:30:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:30:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:30:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:30:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:30:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:30:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:30:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:30:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:30:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:30:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:30:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:30:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:30:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:30:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:30:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:30:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:30:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:30:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:30:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:30:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:30:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:30:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:30:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:30:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:30:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:30:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:30:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:30:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:30:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:30:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:30:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:30:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:30:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:30:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:30:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:30:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:30:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:30:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:30:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:30:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:30:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:30:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:30:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:30:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:30:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:30:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:30:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:30:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:30:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:30:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:30:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:30:03,115 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:30:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:30:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:30:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:30:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:30:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:30:03,116 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:30:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:30:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:30:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:30:03,117 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:30:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:30:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:30:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:30:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:30:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:30:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:30:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:30:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:30:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:30:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:30:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:30:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:30:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:30:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:30:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:30:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:30:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:30:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:30:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:30:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:30:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:30:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:30:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:30:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:30:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:30:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:30:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:30:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:30:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:30:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:30:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:30:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:30:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:30:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:30:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:30:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:30:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:30:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:30:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:30:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:30:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:30:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-13 18:30:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-11-13 18:30:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-11-13 18:30:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:30:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:30:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:30:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:30:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:30:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:30:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-13 18:30:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:30:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-13 18:30:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-11-13 18:30:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-13 18:30:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:30:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-11-13 18:30:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-13 18:30:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-11-13 18:30:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-11-13 18:30:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:30:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-11-13 18:30:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:30:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-11-13 18:30:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-11-13 18:30:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-13 18:30:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 18:30:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-11-13 18:30:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:30:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:30:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-11-13 18:30:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-11-13 18:30:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:30:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-11-13 18:30:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-11-13 18:30:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-11-13 18:30:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-11-13 18:30:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-11-13 18:30:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-11-13 18:30:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-11-13 18:30:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-11-13 18:30:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-11-13 18:30:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-11-13 18:30:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-11-13 18:30:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:30:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-13 18:30:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-13 18:30:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-11-13 18:30:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:30:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:30:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:30:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:30:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:30:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:30:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:30:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:30:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 18:30:03,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 18:30:03,792 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:30:04,159 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:30:04,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:30:04,486 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 18:30:04,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:30:04 BoogieIcfgContainer [2021-11-13 18:30:04,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:30:04,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:30:04,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:30:04,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:30:04,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:30:02" (1/3) ... [2021-11-13 18:30:04,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2ea77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:30:04, skipping insertion in model container [2021-11-13 18:30:04,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:30:02" (2/3) ... [2021-11-13 18:30:04,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2ea77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:30:04, skipping insertion in model container [2021-11-13 18:30:04,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:30:04" (3/3) ... [2021-11-13 18:30:04,497 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test18_2.i [2021-11-13 18:30:04,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:30:04,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 81 error locations. [2021-11-13 18:30:04,549 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:30:04,556 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 [2021-11-13 18:30:04,556 INFO L340 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2021-11-13 18:30:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 66 states have (on average 1.606060606060606) internal successors, (106), 94 states have internal predecessors, (106), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-13 18:30:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:30:04,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:04,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:04,591 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -114808450, now seen corresponding path program 1 times [2021-11-13 18:30:04,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:04,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895321501] [2021-11-13 18:30:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:04,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:04,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:04,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:04,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:30:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:04,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:30:04,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:04,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:05,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:05,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895321501] [2021-11-13 18:30:05,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895321501] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:05,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:05,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 18:30:05,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170725491] [2021-11-13 18:30:05,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:05,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:30:05,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:05,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:30:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:05,131 INFO L87 Difference]: Start difference. First operand has 117 states, 66 states have (on average 1.606060606060606) internal successors, (106), 94 states have internal predecessors, (106), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:30:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:05,301 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2021-11-13 18:30:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:30:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-11-13 18:30:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:05,314 INFO L225 Difference]: With dead ends: 78 [2021-11-13 18:30:05,315 INFO L226 Difference]: Without dead ends: 75 [2021-11-13 18:30:05,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:05,326 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 30 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:05,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 167 Invalid, 50 Unknown, 0 Unchecked, 8.03ms Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 127.09ms Time] [2021-11-13 18:30:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-13 18:30:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 48. [2021-11-13 18:30:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 38 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:30:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-11-13 18:30:05,397 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 17 [2021-11-13 18:30:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:05,397 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-11-13 18:30:05,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:30:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-11-13 18:30:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:30:05,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:05,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:05,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:05,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:05,612 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1628001885, now seen corresponding path program 1 times [2021-11-13 18:30:05,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:05,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591891690] [2021-11-13 18:30:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:05,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:05,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:05,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:05,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:30:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:05,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:30:05,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:05,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:05,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:05,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591891690] [2021-11-13 18:30:05,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591891690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:05,997 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:05,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:30:05,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561869352] [2021-11-13 18:30:05,997 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:05,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:30:05,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:30:06,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:30:06,000 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:30:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:06,105 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-11-13 18:30:06,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:30:06,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-11-13 18:30:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:06,107 INFO L225 Difference]: With dead ends: 76 [2021-11-13 18:30:06,108 INFO L226 Difference]: Without dead ends: 73 [2021-11-13 18:30:06,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:30:06,109 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:06,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 98 Invalid, 33 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 82.50ms Time] [2021-11-13 18:30:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-13 18:30:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2021-11-13 18:30:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 43 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-13 18:30:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2021-11-13 18:30:06,128 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 17 [2021-11-13 18:30:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:06,129 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2021-11-13 18:30:06,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:30:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2021-11-13 18:30:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:30:06,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:06,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:06,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:06,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:06,344 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash 735393073, now seen corresponding path program 1 times [2021-11-13 18:30:06,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:06,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613379871] [2021-11-13 18:30:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:06,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:06,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:06,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:06,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:30:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:06,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:30:06,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:06,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:06,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:06,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613379871] [2021-11-13 18:30:06,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613379871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:06,624 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:06,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:30:06,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272216118] [2021-11-13 18:30:06,624 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:06,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:06,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:06,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:06,626 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:30:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:06,698 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2021-11-13 18:30:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:30:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2021-11-13 18:30:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:06,700 INFO L225 Difference]: With dead ends: 92 [2021-11-13 18:30:06,701 INFO L226 Difference]: Without dead ends: 92 [2021-11-13 18:30:06,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:30:06,702 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 170 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.39ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:06,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 95 Invalid, 27 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 50.39ms Time] [2021-11-13 18:30:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-13 18:30:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 63. [2021-11-13 18:30:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.5) internal successors, (60), 51 states have internal predecessors, (60), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-13 18:30:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2021-11-13 18:30:06,714 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 18 [2021-11-13 18:30:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:06,715 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2021-11-13 18:30:06,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:30:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2021-11-13 18:30:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 18:30:06,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:06,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:06,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:06,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:06,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash -529470855, now seen corresponding path program 1 times [2021-11-13 18:30:06,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:06,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189039012] [2021-11-13 18:30:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:06,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:06,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:06,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:06,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:30:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:07,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:30:07,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:07,138 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 [2021-11-13 18:30:07,273 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-13 18:30:07,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-11-13 18:30:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:07,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:07,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:07,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189039012] [2021-11-13 18:30:07,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189039012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:30:07,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:30:07,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-13 18:30:07,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024072766] [2021-11-13 18:30:07,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:30:07,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:30:07,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:07,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:30:07,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:30:07,642 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:30:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:07,831 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2021-11-13 18:30:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:07,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-11-13 18:30:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:07,834 INFO L225 Difference]: With dead ends: 87 [2021-11-13 18:30:07,834 INFO L226 Difference]: Without dead ends: 87 [2021-11-13 18:30:07,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:30:07,835 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 23 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 159.06ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:07,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 190 Invalid, 143 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 58 Unchecked, 159.06ms Time] [2021-11-13 18:30:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-13 18:30:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2021-11-13 18:30:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.5) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-13 18:30:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2021-11-13 18:30:07,849 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 23 [2021-11-13 18:30:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:07,849 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2021-11-13 18:30:07,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:30:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2021-11-13 18:30:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 18:30:07,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:07,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:07,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:08,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:08,063 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash -529470854, now seen corresponding path program 1 times [2021-11-13 18:30:08,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:08,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353284336] [2021-11-13 18:30:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:08,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:08,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:08,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:08,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:30:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:08,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:30:08,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:08,276 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 [2021-11-13 18:30:08,283 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 [2021-11-13 18:30:10,646 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:30:10,647 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 32 treesize of output 34 [2021-11-13 18:30:10,660 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:30:10,660 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 26 treesize of output 26 [2021-11-13 18:30:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:10,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:32,623 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 29 treesize of output 27 [2021-11-13 18:30:33,368 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 27 treesize of output 25 [2021-11-13 18:30:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:33,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:33,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353284336] [2021-11-13 18:30:33,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353284336] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:30:33,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:30:33,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-13 18:30:33,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110822864] [2021-11-13 18:30:33,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:30:33,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:30:33,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:33,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:30:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=255, Unknown=8, NotChecked=0, Total=306 [2021-11-13 18:30:33,546 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 18 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 18:30:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:44,978 INFO L93 Difference]: Finished difference Result 191 states and 231 transitions. [2021-11-13 18:30:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:30:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 23 [2021-11-13 18:30:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:44,981 INFO L225 Difference]: With dead ends: 191 [2021-11-13 18:30:44,981 INFO L226 Difference]: Without dead ends: 191 [2021-11-13 18:30:44,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=69, Invalid=381, Unknown=12, NotChecked=0, Total=462 [2021-11-13 18:30:44,983 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 128 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 918.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.93ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 1033.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:44,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 618 Invalid, 760 Unknown, 0 Unchecked, 8.93ms Time], IncrementalHoareTripleChecker [24 Valid, 416 Invalid, 0 Unknown, 320 Unchecked, 1033.54ms Time] [2021-11-13 18:30:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-13 18:30:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 98. [2021-11-13 18:30:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.5) internal successors, (108), 82 states have internal predecessors, (108), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-13 18:30:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 131 transitions. [2021-11-13 18:30:44,999 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 131 transitions. Word has length 23 [2021-11-13 18:30:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:45,000 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 131 transitions. [2021-11-13 18:30:45,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 18:30:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 131 transitions. [2021-11-13 18:30:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 18:30:45,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:45,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:45,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:45,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:45,202 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1035029480, now seen corresponding path program 1 times [2021-11-13 18:30:45,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:45,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451708650] [2021-11-13 18:30:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:45,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:45,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:45,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:45,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:30:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:45,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:30:45,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:45,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:30:45,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:45,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451708650] [2021-11-13 18:30:45,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451708650] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:30:45,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:30:45,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 18:30:45,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19980585] [2021-11-13 18:30:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:45,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:30:45,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:30:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:45,583 INFO L87 Difference]: Start difference. First operand 98 states and 131 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:30:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:45,645 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2021-11-13 18:30:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:30:45,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-11-13 18:30:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:45,646 INFO L225 Difference]: With dead ends: 80 [2021-11-13 18:30:45,646 INFO L226 Difference]: Without dead ends: 76 [2021-11-13 18:30:45,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:45,647 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:45,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 18 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 58.14ms Time] [2021-11-13 18:30:45,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-13 18:30:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-13 18:30:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.5) internal successors, (81), 64 states have internal predecessors, (81), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-13 18:30:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2021-11-13 18:30:45,656 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 23 [2021-11-13 18:30:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:45,657 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2021-11-13 18:30:45,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:30:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2021-11-13 18:30:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:30:45,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:45,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:45,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 18:30:45,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:45,870 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting entry_pointErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:45,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2015391035, now seen corresponding path program 1 times [2021-11-13 18:30:45,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:45,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173197658] [2021-11-13 18:30:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:45,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:45,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:45,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:45,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:30:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:45,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:30:45,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:30:46,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:30:46,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:46,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173197658] [2021-11-13 18:30:46,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173197658] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:46,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:46,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 18:30:46,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204483521] [2021-11-13 18:30:46,152 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:46,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:30:46,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:30:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:30:46,153 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:30:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:46,200 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2021-11-13 18:30:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:30:46,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-11-13 18:30:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:46,202 INFO L225 Difference]: With dead ends: 94 [2021-11-13 18:30:46,202 INFO L226 Difference]: Without dead ends: 94 [2021-11-13 18:30:46,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:46,204 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:46,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 189 Invalid, 19 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 32.13ms Time] [2021-11-13 18:30:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-13 18:30:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2021-11-13 18:30:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 66 states have internal predecessors, (85), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-13 18:30:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2021-11-13 18:30:46,218 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 25 [2021-11-13 18:30:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:46,218 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2021-11-13 18:30:46,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:30:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2021-11-13 18:30:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:30:46,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:46,220 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:46,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:46,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:46,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash -272580700, now seen corresponding path program 1 times [2021-11-13 18:30:46,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:46,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947085041] [2021-11-13 18:30:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:46,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:46,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:46,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:46,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:30:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:46,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:30:46,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:30:46,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:30:46,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:46,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947085041] [2021-11-13 18:30:46,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947085041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:46,752 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:46,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:30:46,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011224517] [2021-11-13 18:30:46,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:46,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:30:46,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:30:46,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:30:46,754 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:30:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:46,857 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2021-11-13 18:30:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:30:46,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2021-11-13 18:30:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:46,859 INFO L225 Difference]: With dead ends: 79 [2021-11-13 18:30:46,859 INFO L226 Difference]: Without dead ends: 79 [2021-11-13 18:30:46,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:30:46,860 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 31 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.58ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:46,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 79.58ms Time] [2021-11-13 18:30:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-13 18:30:46,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2021-11-13 18:30:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 50 states have (on average 1.38) internal successors, (69), 58 states have internal predecessors, (69), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-13 18:30:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2021-11-13 18:30:46,875 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 25 [2021-11-13 18:30:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:46,883 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2021-11-13 18:30:46,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 18:30:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2021-11-13 18:30:46,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 18:30:46,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:46,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:46,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:47,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:47,087 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting entry_pointErr8ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 139931782, now seen corresponding path program 1 times [2021-11-13 18:30:47,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:47,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882017759] [2021-11-13 18:30:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:47,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:47,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:47,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:30:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:47,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:30:47,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:30:47,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:30:47,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:47,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882017759] [2021-11-13 18:30:47,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882017759] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:30:47,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:30:47,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-11-13 18:30:47,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563947891] [2021-11-13 18:30:47,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:30:47,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:30:47,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:30:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:30:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:47,816 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:30:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:48,036 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2021-11-13 18:30:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:48,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2021-11-13 18:30:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:48,038 INFO L225 Difference]: With dead ends: 71 [2021-11-13 18:30:48,038 INFO L226 Difference]: Without dead ends: 71 [2021-11-13 18:30:48,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:30:48,039 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 183.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 211.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:48,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 99 Invalid, 90 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 13 Unchecked, 211.62ms Time] [2021-11-13 18:30:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-13 18:30:48,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-13 18:30:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.34) internal successors, (67), 57 states have internal predecessors, (67), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-13 18:30:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2021-11-13 18:30:48,046 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 26 [2021-11-13 18:30:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:48,047 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2021-11-13 18:30:48,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:30:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2021-11-13 18:30:48,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 18:30:48,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:48,048 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:48,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:48,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:48,249 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 77 more)] === [2021-11-13 18:30:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1318116199, now seen corresponding path program 1 times [2021-11-13 18:30:48,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:48,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314446676] [2021-11-13 18:30:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:48,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:48,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:48,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:48,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:30:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:48,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 18:30:48,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:30:48,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:59,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:30:59,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314446676] [2021-11-13 18:30:59,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_old(#valid)_BEFORE_CALL_8|] [2021-11-13 18:30:59,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [16666308] [2021-11-13 18:30:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:59,468 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 18:30:59,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/cvc4 [2021-11-13 18:30:59,474 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 18:30:59,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-13 18:30:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:59,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 18:30:59,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:59,741 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-13 18:30:59,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2021-11-13 18:31:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:31:07,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:31:22,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_old(#valid)_BEFORE_CALL_13|] [2021-11-13 18:31:22,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192795075] [2021-11-13 18:31:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:22,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:31:22,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:31:22,040 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:31:22,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 18:31:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:22,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 18:31:22,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:31:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:31:22,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:31:34,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_old(#valid)_BEFORE_CALL_18|] [2021-11-13 18:31:34,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:34,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-13 18:31:34,021 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-13 18:31:34,022 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-13 18:31:34,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (80 of 81 remaining) [2021-11-13 18:31:34,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (79 of 81 remaining) [2021-11-13 18:31:34,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (78 of 81 remaining) [2021-11-13 18:31:34,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (77 of 81 remaining) [2021-11-13 18:31:34,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (76 of 81 remaining) [2021-11-13 18:31:34,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (75 of 81 remaining) [2021-11-13 18:31:34,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (74 of 81 remaining) [2021-11-13 18:31:34,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (73 of 81 remaining) [2021-11-13 18:31:34,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (72 of 81 remaining) [2021-11-13 18:31:34,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (71 of 81 remaining) [2021-11-13 18:31:34,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (70 of 81 remaining) [2021-11-13 18:31:34,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (69 of 81 remaining) [2021-11-13 18:31:34,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (68 of 81 remaining) [2021-11-13 18:31:34,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (67 of 81 remaining) [2021-11-13 18:31:34,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (66 of 81 remaining) [2021-11-13 18:31:34,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (65 of 81 remaining) [2021-11-13 18:31:34,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (64 of 81 remaining) [2021-11-13 18:31:34,031 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (63 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (62 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (61 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (60 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (59 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (58 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (57 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (56 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (55 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (54 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (53 of 81 remaining) [2021-11-13 18:31:34,032 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (52 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (51 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (50 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (49 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (48 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (47 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (46 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (45 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (44 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (43 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (42 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (41 of 81 remaining) [2021-11-13 18:31:34,033 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (40 of 81 remaining) [2021-11-13 18:31:34,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (39 of 81 remaining) [2021-11-13 18:31:34,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (38 of 81 remaining) [2021-11-13 18:31:34,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (37 of 81 remaining) [2021-11-13 18:31:34,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (36 of 81 remaining) [2021-11-13 18:31:34,034 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (35 of 81 remaining) [2021-11-13 18:31:34,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (34 of 81 remaining) [2021-11-13 18:31:34,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 81 remaining) [2021-11-13 18:31:34,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (32 of 81 remaining) [2021-11-13 18:31:34,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (31 of 81 remaining) [2021-11-13 18:31:34,035 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (30 of 81 remaining) [2021-11-13 18:31:34,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (29 of 81 remaining) [2021-11-13 18:31:34,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (28 of 81 remaining) [2021-11-13 18:31:34,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (27 of 81 remaining) [2021-11-13 18:31:34,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (26 of 81 remaining) [2021-11-13 18:31:34,036 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (25 of 81 remaining) [2021-11-13 18:31:34,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (24 of 81 remaining) [2021-11-13 18:31:34,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (23 of 81 remaining) [2021-11-13 18:31:34,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (22 of 81 remaining) [2021-11-13 18:31:34,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (21 of 81 remaining) [2021-11-13 18:31:34,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (20 of 81 remaining) [2021-11-13 18:31:34,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (19 of 81 remaining) [2021-11-13 18:31:34,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (18 of 81 remaining) [2021-11-13 18:31:34,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (17 of 81 remaining) [2021-11-13 18:31:34,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (16 of 81 remaining) [2021-11-13 18:31:34,038 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (15 of 81 remaining) [2021-11-13 18:31:34,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (14 of 81 remaining) [2021-11-13 18:31:34,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (13 of 81 remaining) [2021-11-13 18:31:34,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (12 of 81 remaining) [2021-11-13 18:31:34,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (11 of 81 remaining) [2021-11-13 18:31:34,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (10 of 81 remaining) [2021-11-13 18:31:34,039 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION (9 of 81 remaining) [2021-11-13 18:31:34,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION (8 of 81 remaining) [2021-11-13 18:31:34,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2REQUIRES_VIOLATION (7 of 81 remaining) [2021-11-13 18:31:34,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3REQUIRES_VIOLATION (6 of 81 remaining) [2021-11-13 18:31:34,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE (5 of 81 remaining) [2021-11-13 18:31:34,040 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr5ASSERT_VIOLATIONMEMORY_FREE (4 of 81 remaining) [2021-11-13 18:31:34,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr6ASSERT_VIOLATIONMEMORY_FREE (3 of 81 remaining) [2021-11-13 18:31:34,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 81 remaining) [2021-11-13 18:31:34,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 81 remaining) [2021-11-13 18:31:34,041 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 81 remaining) [2021-11-13 18:31:34,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:31:34,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-13 18:31:34,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:31:34,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt [2021-11-13 18:31:34,658 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:31:34,662 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:31:34,665 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-13 18:31:34,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:31:34 BoogieIcfgContainer [2021-11-13 18:31:34,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:31:34,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:31:34,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:31:34,674 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:31:34,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:30:04" (3/4) ... [2021-11-13 18:31:34,678 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 18:31:34,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:31:34,679 INFO L158 Benchmark]: Toolchain (without parser) took 92627.44ms. Allocated memory was 56.6MB in the beginning and 92.3MB in the end (delta: 35.7MB). Free memory was 33.2MB in the beginning and 53.2MB in the end (delta: -20.0MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2021-11-13 18:31:34,679 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:31:34,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 815.18ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.1MB in the beginning and 49.0MB in the end (delta: -15.9MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-11-13 18:31:34,680 INFO L158 Benchmark]: Boogie Preprocessor took 108.49ms. Allocated memory is still 69.2MB. Free memory was 49.0MB in the beginning and 44.2MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 18:31:34,680 INFO L158 Benchmark]: RCFGBuilder took 1511.67ms. Allocated memory is still 69.2MB. Free memory was 44.2MB in the beginning and 32.1MB in the end (delta: 12.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-11-13 18:31:34,681 INFO L158 Benchmark]: TraceAbstraction took 90182.30ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 31.7MB in the beginning and 53.9MB in the end (delta: -22.1MB). Peak memory consumption was 897.3kB. Max. memory is 16.1GB. [2021-11-13 18:31:34,681 INFO L158 Benchmark]: Witness Printer took 4.48ms. Allocated memory is still 92.3MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:31:34,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 815.18ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.1MB in the beginning and 49.0MB in the end (delta: -15.9MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 108.49ms. Allocated memory is still 69.2MB. Free memory was 49.0MB in the beginning and 44.2MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1511.67ms. Allocated memory is still 69.2MB. Free memory was 44.2MB in the beginning and 32.1MB in the end (delta: 12.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 90182.30ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 31.7MB in the beginning and 53.9MB in the end (delta: -22.1MB). Peak memory consumption was 897.3kB. Max. memory is 16.1GB. * Witness Printer took 4.48ms. Allocated memory is still 92.3MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 780]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 780. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L781] CALL entry_point() [L761] int len = 10; [L762] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] RET, EXPR ldv_malloc(sizeof(struct A18*)*len) [L762] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L763] struct A18 *p; [L764] int i=0; [L765] int j; [L766] COND FALSE !(!array) [L767] COND TRUE i=0) [L777] free(array) [L777] free(array) [L777] free(array) [L781] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: 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 pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: 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: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 47 procedures, 357 locations, 81 error locations. Started 1 CEGAR loops. OverallTime: 90.1s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 483 SdHoareTripleChecker+Valid, 1834.05ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 476 mSDsluCounter, 1792 SdHoareTripleChecker+Invalid, 1593.04ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 391 IncrementalHoareTripleChecker+Unchecked, 1360 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 732 IncrementalHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 432 mSDtfsCounter, 732 mSolverCounterSat, 32.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 330 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 29.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=0, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 195 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 38.8s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 405 ConstructedInterpolants, 26 QuantifiedInterpolants, 2109 SizeOfPredicates, 13 NumberOfNonLiveVariables, 918 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 34/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 18:31:34,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09b4bf26-0157-4cc1-bb92-63eed2802a6d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN