./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt --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 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt --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 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:27:54,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:27:54,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:27:54,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:27:54,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:27:54,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:27:54,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:27:54,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:27:54,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:27:54,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:27:54,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:27:54,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:27:54,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:27:54,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:27:54,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:27:54,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:27:54,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:27:54,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:27:54,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:27:54,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:27:54,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:27:54,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:27:54,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:27:54,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:27:54,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:27:54,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:27:54,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:27:54,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:27:54,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:27:54,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:27:54,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:27:54,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:27:54,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:27:54,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:27:54,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:27:54,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:27:54,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:27:54,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:27:54,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:27:54,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:27:54,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:27:54,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:27:54,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:27:54,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:27:54,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:27:54,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:27:54,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:27:54,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:27:54,730 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:27:54,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:27:54,731 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:27:54,732 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:27:54,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:27:54,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:27:54,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:27:54,733 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:27:54,733 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:27:54,734 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:27:54,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:27:54,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:27:54,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:27:54,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:27:54,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:27:54,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:27:54,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:27:54,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:27:54,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:27:54,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:27:54,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:27:54,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:27:54,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:27:54,743 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_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2021-10-13 00:27:55,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:27:55,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:27:55,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:27:55,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:27:55,042 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:27:55,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-13 00:27:55,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/49481a55a/ee1b147afcb1496d82a1afca39a317fb/FLAG2f5ff8893 [2021-10-13 00:27:55,673 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:27:55,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-13 00:27:55,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/49481a55a/ee1b147afcb1496d82a1afca39a317fb/FLAG2f5ff8893 [2021-10-13 00:27:55,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/49481a55a/ee1b147afcb1496d82a1afca39a317fb [2021-10-13 00:27:55,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:27:55,966 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:27:55,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:27:55,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:27:55,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:27:55,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:55" (1/1) ... [2021-10-13 00:27:55,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da6f410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:55, skipping insertion in model container [2021-10-13 00:27:55,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:27:55" (1/1) ... [2021-10-13 00:27:56,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:27:56,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:27:56,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:27:56,444 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 00:27:56,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66310ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:27:56, skipping insertion in model container [2021-10-13 00:27:56,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:27:56,446 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-13 00:27:56,449 INFO L168 Benchmark]: Toolchain (without parser) took 480.56 ms. Allocated memory is still 96.5 MB. Free memory was 56.0 MB in the beginning and 62.7 MB in the end (delta: -6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:56,450 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:27:56,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.91 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 63.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:27:56,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 477.91 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 63.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:27:58,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:27:58,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:27:58,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:27:58,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:27:58,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:27:58,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:27:58,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:27:58,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:27:58,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:27:58,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:27:58,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:27:58,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:27:58,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:27:58,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:27:58,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:27:58,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:27:58,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:27:58,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:27:58,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:27:58,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:27:58,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:27:58,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:27:58,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:27:58,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:27:58,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:27:58,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:27:58,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:27:58,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:27:58,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:27:58,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:27:58,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:27:58,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:27:58,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:27:58,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:27:58,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:27:58,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:27:58,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:27:58,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:27:58,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:27:58,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:27:58,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:27:58,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:27:58,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:27:58,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:27:58,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:27:58,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:27:58,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:27:58,861 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:27:58,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:27:58,861 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:27:58,861 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:27:58,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:27:58,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:27:58,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:27:58,863 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:27:58,863 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:27:58,863 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:27:58,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:27:58,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:27:58,864 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:27:58,864 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:27:58,865 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:27:58,865 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:27:58,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:27:58,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:27:58,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:27:58,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:27:58,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:27:58,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:27:58,867 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:27:58,867 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:27:58,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:27:58,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:27:58,868 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_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2021-10-13 00:27:59,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:27:59,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:27:59,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:27:59,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:27:59,266 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:27:59,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-13 00:27:59,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/d18c7ca34/cea0e6bdadf547649a56974654194d59/FLAG287d07f2c [2021-10-13 00:27:59,906 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:27:59,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2021-10-13 00:27:59,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/d18c7ca34/cea0e6bdadf547649a56974654194d59/FLAG287d07f2c [2021-10-13 00:28:00,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/data/d18c7ca34/cea0e6bdadf547649a56974654194d59 [2021-10-13 00:28:00,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:28:00,205 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:28:00,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:28:00,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:28:00,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:28:00,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:28:00" (1/1) ... [2021-10-13 00:28:00,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b2bfda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:00, skipping insertion in model container [2021-10-13 00:28:00,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:28:00" (1/1) ... [2021-10-13 00:28:00,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:28:00,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:28:00,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:28:00,805 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 00:28:00,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:28:00,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:28:00,915 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:28:00,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:28:01,018 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:28:01,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01 WrapperNode [2021-10-13 00:28:01,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:28:01,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:28:01,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:28:01,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:28:01,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:28:01,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:28:01,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:28:01,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:28:01,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (1/1) ... [2021-10-13 00:28:01,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:28:01,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:28:01,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:28:01,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:28:01,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:28:01,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:28:01,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 00:28:01,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:28:01,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:28:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:28:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:28:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:28:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:28:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-13 00:28:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-13 00:28:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-13 00:28:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure probe2_6 [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-13 00:28:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-13 00:28:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-13 00:28:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:28:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:28:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:28:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:28:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:28:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:28:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:28:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:28:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:28:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:28:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:28:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:28:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:28:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:28:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:28:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:28:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:28:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:28:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:28:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:28:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:28:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:28:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:28:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:28:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:28:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:28:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:28:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:28:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:28:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:28:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:28:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:28:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:28:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:28:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:28:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:28:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:28:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:28:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:28:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:28:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:28:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:28:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:28:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:28:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:28:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:28:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:28:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:28:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:28:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:28:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:28:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:28:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:28:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:28:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:28:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:28:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:28:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:28:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:28:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:28:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-13 00:28:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:28:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-13 00:28:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-13 00:28:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:28:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:28:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-13 00:28:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:28:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-13 00:28:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-13 00:28:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-13 00:28:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:28:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-13 00:28:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-13 00:28:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-13 00:28:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:28:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-13 00:28:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-13 00:28:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-13 00:28:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-13 00:28:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-13 00:28:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-13 00:28:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:28:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-13 00:28:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-13 00:28:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-13 00:28:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-13 00:28:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-13 00:28:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 00:28:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 00:28:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-13 00:28:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-13 00:28:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-13 00:28:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-13 00:28:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-13 00:28:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-13 00:28:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-13 00:28:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-13 00:28:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-13 00:28:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-13 00:28:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-13 00:28:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-13 00:28:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-13 00:28:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-13 00:28:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-13 00:28:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-13 00:28:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 00:28:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-10-13 00:28:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-10-13 00:28:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure probe2_6 [2021-10-13 00:28:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-10-13 00:28:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-13 00:28:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:28:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:28:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:28:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:28:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:28:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:28:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-13 00:28:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-13 00:28:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-13 00:28:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-13 00:28:01,899 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:28:02,289 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:28:02,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:28:02,729 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 00:28:02,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:28:02 BoogieIcfgContainer [2021-10-13 00:28:02,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:28:02,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:28:02,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:28:02,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:28:02,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:28:00" (1/3) ... [2021-10-13 00:28:02,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bae7865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:28:02, skipping insertion in model container [2021-10-13 00:28:02,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:28:01" (2/3) ... [2021-10-13 00:28:02,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bae7865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:28:02, skipping insertion in model container [2021-10-13 00:28:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:28:02" (3/3) ... [2021-10-13 00:28:02,742 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2021-10-13 00:28:02,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:28:02,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2021-10-13 00:28:02,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:28:02,799 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:28:02,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2021-10-13 00:28:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-13 00:28:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:28:02,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:02,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:02,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:02,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:02,833 INFO L82 PathProgramCache]: Analyzing trace with hash -42624849, now seen corresponding path program 1 times [2021-10-13 00:28:02,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:02,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21914522] [2021-10-13 00:28:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:02,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:02,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:02,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:02,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:28:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:03,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:28:03,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:03,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:03,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:03,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21914522] [2021-10-13 00:28:03,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21914522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:03,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:03,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:28:03,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409070759] [2021-10-13 00:28:03,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:28:03,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:28:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:28:03,338 INFO L87 Difference]: Start difference. First operand has 134 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 105 states have internal predecessors, (114), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:28:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:03,408 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-10-13 00:28:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:28:03,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-10-13 00:28:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:03,421 INFO L225 Difference]: With dead ends: 85 [2021-10-13 00:28:03,421 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 00:28:03,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:28:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 00:28:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-10-13 00:28:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 49 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-13 00:28:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-13 00:28:03,465 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 20 [2021-10-13 00:28:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:03,466 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-13 00:28:03,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:28:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-13 00:28:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:28:03,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:03,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:03,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 00:28:03,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:03,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:03,683 INFO L82 PathProgramCache]: Analyzing trace with hash -239138354, now seen corresponding path program 1 times [2021-10-13 00:28:03,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:03,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444069303] [2021-10-13 00:28:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:03,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:03,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:03,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:28:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:03,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:28:03,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:04,011 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-13 00:28:04,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-13 00:28:04,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-13 00:28:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:04,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:04,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-13 00:28:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:04,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:04,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444069303] [2021-10-13 00:28:04,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444069303] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:04,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:04,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 00:28:04,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369242987] [2021-10-13 00:28:04,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:28:04,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:28:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:28:04,997 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:28:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:05,318 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-10-13 00:28:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:28:05,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-10-13 00:28:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:05,322 INFO L225 Difference]: With dead ends: 110 [2021-10-13 00:28:05,322 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 00:28:05,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:28:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 00:28:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 95. [2021-10-13 00:28:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 73 states have internal predecessors, (90), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2021-10-13 00:28:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-10-13 00:28:05,346 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 20 [2021-10-13 00:28:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:05,346 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-10-13 00:28:05,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-13 00:28:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-10-13 00:28:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:28:05,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:05,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:05,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:05,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:05,548 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:05,549 INFO L82 PathProgramCache]: Analyzing trace with hash -239138355, now seen corresponding path program 1 times [2021-10-13 00:28:05,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:05,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753051886] [2021-10-13 00:28:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:05,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:05,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:05,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:05,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:28:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:05,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:28:05,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:05,812 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 00:28:05,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-13 00:28:05,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-13 00:28:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:05,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:06,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-10-13 00:28:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:06,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:06,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753051886] [2021-10-13 00:28:06,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753051886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:06,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:06,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:28:06,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557770092] [2021-10-13 00:28:06,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:28:06,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:06,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:28:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:28:06,246 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 00:28:06,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:06,440 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2021-10-13 00:28:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:28:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-10-13 00:28:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:06,443 INFO L225 Difference]: With dead ends: 131 [2021-10-13 00:28:06,443 INFO L226 Difference]: Without dead ends: 127 [2021-10-13 00:28:06,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:28:06,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-13 00:28:06,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 104. [2021-10-13 00:28:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 80 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-13 00:28:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-10-13 00:28:06,469 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 20 [2021-10-13 00:28:06,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:06,471 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-10-13 00:28:06,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-13 00:28:06,472 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-10-13 00:28:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:28:06,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:06,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:06,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:06,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:06,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash 240943427, now seen corresponding path program 1 times [2021-10-13 00:28:06,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:06,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380383145] [2021-10-13 00:28:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:06,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:06,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:06,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:06,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:28:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:06,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:28:06,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:06,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:07,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:07,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380383145] [2021-10-13 00:28:07,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380383145] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:07,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:07,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 00:28:07,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764427688] [2021-10-13 00:28:07,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:28:07,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:28:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:28:07,092 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:28:07,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:07,128 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2021-10-13 00:28:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:28:07,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-10-13 00:28:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:07,131 INFO L225 Difference]: With dead ends: 103 [2021-10-13 00:28:07,131 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 00:28:07,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:28:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 00:28:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-13 00:28:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 79 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-13 00:28:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2021-10-13 00:28:07,141 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 22 [2021-10-13 00:28:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:07,155 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2021-10-13 00:28:07,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:28:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2021-10-13 00:28:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:28:07,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:07,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:07,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:07,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:07,371 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:07,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2116285580, now seen corresponding path program 1 times [2021-10-13 00:28:07,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:07,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658099336] [2021-10-13 00:28:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:07,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:07,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:07,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:28:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:07,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:28:07,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:07,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:07,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:07,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658099336] [2021-10-13 00:28:07,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658099336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:07,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:07,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 00:28:07,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024466244] [2021-10-13 00:28:07,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:28:07,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:28:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:28:07,805 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:28:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:07,876 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2021-10-13 00:28:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:28:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-10-13 00:28:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:07,879 INFO L225 Difference]: With dead ends: 121 [2021-10-13 00:28:07,879 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 00:28:07,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 76.2ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:28:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 00:28:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-10-13 00:28:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.391304347826087) internal successors, (96), 82 states have internal predecessors, (96), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-13 00:28:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-10-13 00:28:07,890 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 22 [2021-10-13 00:28:07,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:07,891 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-10-13 00:28:07,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:28:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-10-13 00:28:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 00:28:07,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:07,892 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:07,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:08,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:08,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:08,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1120687975, now seen corresponding path program 1 times [2021-10-13 00:28:08,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:08,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239927734] [2021-10-13 00:28:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:08,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:08,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:08,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:28:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:08,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:28:08,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:08,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:08,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:08,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239927734] [2021-10-13 00:28:08,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239927734] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:08,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:08,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-13 00:28:08,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174824897] [2021-10-13 00:28:08,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:28:08,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:28:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:28:08,806 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-13 00:28:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:09,138 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2021-10-13 00:28:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:28:09,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-10-13 00:28:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:09,140 INFO L225 Difference]: With dead ends: 118 [2021-10-13 00:28:09,140 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 00:28:09,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:28:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 00:28:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-10-13 00:28:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 81 states have internal predecessors, (94), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-13 00:28:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-10-13 00:28:09,149 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 23 [2021-10-13 00:28:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:09,150 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-10-13 00:28:09,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-13 00:28:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-10-13 00:28:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:28:09,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:09,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:09,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:09,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:09,364 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:09,365 INFO L82 PathProgramCache]: Analyzing trace with hash -381588475, now seen corresponding path program 1 times [2021-10-13 00:28:09,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:09,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990965233] [2021-10-13 00:28:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:09,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:09,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:09,367 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:09,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:28:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:09,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:28:09,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:09,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:28:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:09,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:09,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:09,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990965233] [2021-10-13 00:28:09,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990965233] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:09,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:09,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-13 00:28:09,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121419477] [2021-10-13 00:28:09,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:28:09,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:09,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:28:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:28:09,883 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:28:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:10,073 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2021-10-13 00:28:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:28:10,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-13 00:28:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:10,076 INFO L225 Difference]: With dead ends: 109 [2021-10-13 00:28:10,076 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 00:28:10,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:28:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 00:28:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2021-10-13 00:28:10,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 81 states have internal predecessors, (93), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 15 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-13 00:28:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-10-13 00:28:10,084 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 24 [2021-10-13 00:28:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:10,085 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-10-13 00:28:10,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:28:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-10-13 00:28:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:28:10,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:10,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:10,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:10,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:10,299 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash -887147100, now seen corresponding path program 1 times [2021-10-13 00:28:10,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:10,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816484022] [2021-10-13 00:28:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:10,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:10,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:10,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:10,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:28:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:10,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:28:10,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:10,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:10,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:10,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816484022] [2021-10-13 00:28:10,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816484022] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:10,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:10,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 00:28:10,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621087665] [2021-10-13 00:28:10,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:28:10,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:28:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:28:10,744 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:28:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:10,763 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-10-13 00:28:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:28:10,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-13 00:28:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:10,766 INFO L225 Difference]: With dead ends: 71 [2021-10-13 00:28:10,766 INFO L226 Difference]: Without dead ends: 67 [2021-10-13 00:28:10,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:28:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-13 00:28:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-10-13 00:28:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.325) internal successors, (53), 50 states have internal predecessors, (53), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-13 00:28:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-10-13 00:28:10,771 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 24 [2021-10-13 00:28:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:10,772 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-10-13 00:28:10,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:28:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-10-13 00:28:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 00:28:10,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:10,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:10,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:10,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:10,984 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe2_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:10,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash 783543578, now seen corresponding path program 1 times [2021-10-13 00:28:10,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:10,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265334749] [2021-10-13 00:28:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:10,985 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:10,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:10,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:10,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 00:28:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:11,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:28:11,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:11,321 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 00:28:11,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-13 00:28:11,508 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 00:28:11,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-10-13 00:28:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:11,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:11,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:11,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265334749] [2021-10-13 00:28:11,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265334749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:11,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:11,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-10-13 00:28:11,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610745278] [2021-10-13 00:28:11,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:28:11,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:11,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:28:11,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:28:11,940 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:28:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:12,317 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-10-13 00:28:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:28:12,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-10-13 00:28:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:12,318 INFO L225 Difference]: With dead ends: 71 [2021-10-13 00:28:12,319 INFO L226 Difference]: Without dead ends: 71 [2021-10-13 00:28:12,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 289.9ms TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:28:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-13 00:28:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2021-10-13 00:28:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 40 states have (on average 1.3) internal successors, (52), 49 states have internal predecessors, (52), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-13 00:28:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-10-13 00:28:12,323 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 28 [2021-10-13 00:28:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:12,323 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-10-13 00:28:12,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:28:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-10-13 00:28:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 00:28:12,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:12,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:12,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-13 00:28:12,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:12,540 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe2_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:12,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash 783543579, now seen corresponding path program 1 times [2021-10-13 00:28:12,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:12,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143051672] [2021-10-13 00:28:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:12,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:12,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:12,541 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:12,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 00:28:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:12,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:28:12,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:12,817 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-13 00:28:12,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-13 00:28:17,069 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:28:17,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-13 00:28:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:17,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:19,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:19,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143051672] [2021-10-13 00:28:19,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143051672] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:19,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:19,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-13 00:28:19,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535993040] [2021-10-13 00:28:19,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:28:19,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:28:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-13 00:28:19,391 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:28:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:28:26,533 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-10-13 00:28:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:28:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-10-13 00:28:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:28:26,535 INFO L225 Difference]: With dead ends: 64 [2021-10-13 00:28:26,536 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 00:28:26,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6682.6ms TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-10-13 00:28:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 00:28:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-13 00:28:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.225) internal successors, (49), 47 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-13 00:28:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-13 00:28:26,540 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 28 [2021-10-13 00:28:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:28:26,540 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-13 00:28:26,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:28:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-13 00:28:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 00:28:26,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:28:26,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:28:26,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:28:26,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:28:26,754 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:28:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:28:26,755 INFO L82 PathProgramCache]: Analyzing trace with hash 558976828, now seen corresponding path program 1 times [2021-10-13 00:28:26,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:28:26,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906030354] [2021-10-13 00:28:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:28:26,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:28:26,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:28:26,757 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:28:26,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 00:28:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:28:27,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:28:27,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:28:27,078 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 00:28:27,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-13 00:28:27,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-10-13 00:28:27,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 18 [2021-10-13 00:28:27,471 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-13 00:28:27,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-10-13 00:28:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:27,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:28:27,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-13 00:28:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:28:28,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:28:28,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906030354] [2021-10-13 00:28:28,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906030354] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:28:28,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:28:28,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-13 00:28:28,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758264092] [2021-10-13 00:28:28,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:28:28,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:28:28,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:28:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:28:28,068 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-13 00:29:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:29:16,732 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2021-10-13 00:29:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:29:16,733 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-10-13 00:29:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:29:16,734 INFO L225 Difference]: With dead ends: 68 [2021-10-13 00:29:16,734 INFO L226 Difference]: Without dead ends: 57 [2021-10-13 00:29:16,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 6481.4ms TimeCoverageRelationStatistics Valid=95, Invalid=283, Unknown=2, NotChecked=0, Total=380 [2021-10-13 00:29:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-13 00:29:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-10-13 00:29:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-13 00:29:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-10-13 00:29:16,738 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 29 [2021-10-13 00:29:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:29:16,738 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-10-13 00:29:16,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-13 00:29:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-10-13 00:29:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 00:29:16,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:29:16,740 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:29:16,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 00:29:16,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:29:16,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 79 more)] === [2021-10-13 00:29:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:29:16,952 INFO L82 PathProgramCache]: Analyzing trace with hash 249986399, now seen corresponding path program 1 times [2021-10-13 00:29:16,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:29:16,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022425936] [2021-10-13 00:29:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:29:16,952 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:29:16,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:29:16,953 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:29:16,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:29:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:29:17,255 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:29:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:29:17,327 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:29:17,327 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:29:17,328 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:29:17,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-13 00:29:17,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-13 00:29:17,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-13 00:29:17,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-13 00:29:17,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-13 00:29:17,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-13 00:29:17,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,337 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-13 00:29:17,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-13 00:29:17,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err0REQUIRES_VIOLATION [2021-10-13 00:29:17,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err1REQUIRES_VIOLATION [2021-10-13 00:29:17,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe2_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:29:17,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:29:17,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-13 00:29:17,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-13 00:29:17,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-10-13 00:29:17,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-10-13 00:29:17,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:29:17,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:29:17,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:29:17,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:29:17,572 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-13 00:29:17,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:29:17 BoogieIcfgContainer [2021-10-13 00:29:17,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:29:17,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:29:17,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:29:17,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:29:17,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:28:02" (3/4) ... [2021-10-13 00:29:17,596 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:29:17,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:29:17,597 INFO L168 Benchmark]: Toolchain (without parser) took 77392.23 ms. Allocated memory was 71.3 MB in the beginning and 119.5 MB in the end (delta: 48.2 MB). Free memory was 47.9 MB in the beginning and 56.3 MB in the end (delta: -8.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:17,597 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:29:17,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.51 ms. Allocated memory is still 71.3 MB. Free memory was 47.7 MB in the beginning and 35.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:17,598 INFO L168 Benchmark]: Boogie Preprocessor took 105.20 ms. Allocated memory is still 71.3 MB. Free memory was 35.9 MB in the beginning and 50.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:17,598 INFO L168 Benchmark]: RCFGBuilder took 1606.66 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 61.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:17,599 INFO L168 Benchmark]: TraceAbstraction took 74858.41 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 60.9 MB in the beginning and 56.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:17,599 INFO L168 Benchmark]: Witness Printer took 3.10 ms. Allocated memory is still 119.5 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:29:17,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 812.51 ms. Allocated memory is still 71.3 MB. Free memory was 47.7 MB in the beginning and 35.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 105.20 ms. Allocated memory is still 71.3 MB. Free memory was 35.9 MB in the beginning and 50.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1606.66 ms. Allocated memory was 71.3 MB in the beginning and 92.3 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 61.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 74858.41 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 60.9 MB in the beginning and 56.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.10 ms. Allocated memory is still 119.5 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [\old(a6)=null, \old(a6)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L792] CALL entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L785] CALL, EXPR probe2_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L764] int ret = - -3; VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ldv_malloc(sizeof(int))={1:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] CALL, EXPR f6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() VAL [a={3:0}, a={3:0}, a6={3:0}, f6()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] ret = f6() [L769] COND FALSE !(ret<0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] CALL, EXPR g6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() VAL [a={3:0}, a={3:0}, a6={3:0}, g6()=-2147483648, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [\result=-2147483648, a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=2147483648] [L785] RET, EXPR probe2_6(&a6) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, probe2_6(&a6)=-2147483648] [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=2147483648] [L789] a6.p = 0 VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=2147483648] [L792] RET entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 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: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 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. - 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: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 374 locations, 83 error locations. Started 1 CEGAR loops. OverallTime: 74768.1ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 23.9ms, AutomataDifference: 57491.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 647 SDtfs, 962 SDslu, 1596 SDs, 0 SdLazy, 986 SolverSat, 263 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 49263.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 414 SyntacticMatches, 30 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 13894.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 127.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 81 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 132.9ms SsaConstructionTime, 423.5ms SatisfiabilityAnalysisTime, 11519.4ms InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 498 ConstructedInterpolants, 45 QuantifiedInterpolants, 3168 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1202 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:29:17,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56e56b59-c2e8-467d-8f22-f3fc1c35a7d9/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...