./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF --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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:02:12,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:02:12,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:02:12,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:02:12,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:02:12,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:02:12,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:02:12,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:02:12,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:02:12,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:02:12,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:02:12,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:02:12,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:02:12,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:02:12,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:02:12,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:02:12,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:02:12,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:02:12,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:02:12,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:02:12,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:02:12,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:02:12,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:02:12,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:02:12,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:02:12,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:02:12,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:02:12,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:02:12,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:02:12,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:02:12,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:02:12,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:02:12,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:02:12,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:02:12,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:02:12,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:02:12,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:02:12,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:02:12,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:02:12,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:02:12,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:02:12,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:02:12,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:02:12,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:02:12,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:02:12,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:02:12,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:02:12,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:02:12,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:02:12,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:02:12,954 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:02:12,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:02:12,955 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:02:12,955 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:02:12,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:02:12,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:02:12,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:02:12,956 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:02:12,957 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:02:12,957 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:02:12,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:02:12,958 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:02:12,958 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:02:12,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:02:12,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:02:12,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:02:12,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:02:12,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:02:12,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:02:12,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:02:12,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:02:12,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:02:12,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:02:12,961 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_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2021-11-20 06:02:13,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:02:13,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:02:13,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:02:13,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:02:13,252 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:02:13,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-20 06:02:13,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/9f574f044/1c634720ce3d4fbc9c2b5b2a82e5416c/FLAG9d617e1ac [2021-11-20 06:02:14,004 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:02:14,005 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-20 06:02:14,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/9f574f044/1c634720ce3d4fbc9c2b5b2a82e5416c/FLAG9d617e1ac [2021-11-20 06:02:14,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/9f574f044/1c634720ce3d4fbc9c2b5b2a82e5416c [2021-11-20 06:02:14,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:02:14,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:02:14,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:14,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:02:14,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:02:14,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:14" (1/1) ... [2021-11-20 06:02:14,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281d2e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:14, skipping insertion in model container [2021-11-20 06:02:14,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:14" (1/1) ... [2021-11-20 06:02:14,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:02:14,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:02:14,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:14,828 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 06:02:14,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69b26fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:14, skipping insertion in model container [2021-11-20 06:02:14,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:14,830 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 06:02:14,833 INFO L158 Benchmark]: Toolchain (without parser) took 591.81ms. Allocated memory is still 107.0MB. Free memory was 68.6MB in the beginning and 76.4MB in the end (delta: -7.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:02:14,834 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:02:14,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.90ms. Allocated memory is still 107.0MB. Free memory was 68.4MB in the beginning and 76.4MB in the end (delta: -8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:02:14,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 586.90ms. Allocated memory is still 107.0MB. Free memory was 68.4MB in the beginning and 76.4MB in the end (delta: -8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF --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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:02:17,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:02:17,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:02:17,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:02:17,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:02:17,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:02:17,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:02:17,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:02:17,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:02:17,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:02:17,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:02:17,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:02:17,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:02:17,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:02:17,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:02:17,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:02:17,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:02:17,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:02:17,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:02:17,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:02:17,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:02:17,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:02:17,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:02:17,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:02:17,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:02:17,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:02:17,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:02:17,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:02:17,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:02:17,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:02:17,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:02:17,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:02:17,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:02:17,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:02:17,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:02:17,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:02:17,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:02:17,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:02:17,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:02:17,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:02:17,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:02:17,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:02:17,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:02:17,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:02:17,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:02:17,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:02:17,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:02:17,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:02:17,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:02:17,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:02:17,373 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:02:17,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:02:17,374 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:02:17,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:02:17,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:02:17,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:02:17,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:02:17,375 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:02:17,376 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:02:17,376 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:02:17,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:02:17,376 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:02:17,377 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:02:17,377 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:02:17,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:02:17,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:02:17,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:02:17,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:02:17,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:02:17,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:02:17,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:02:17,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:02:17,379 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:02:17,379 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:02:17,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:02:17,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:02:17,380 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_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2021-11-20 06:02:17,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:02:17,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:02:17,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:02:17,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:02:17,819 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:02:17,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-20 06:02:17,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/be5782e39/99aaf7d070614324bdb60cbd9920b366/FLAG2f7b72f55 [2021-11-20 06:02:18,595 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:02:18,598 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2021-11-20 06:02:18,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/be5782e39/99aaf7d070614324bdb60cbd9920b366/FLAG2f7b72f55 [2021-11-20 06:02:18,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/data/be5782e39/99aaf7d070614324bdb60cbd9920b366 [2021-11-20 06:02:18,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:02:18,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:02:18,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:18,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:02:18,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:02:18,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:18" (1/1) ... [2021-11-20 06:02:18,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5a2d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:18, skipping insertion in model container [2021-11-20 06:02:18,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:18" (1/1) ... [2021-11-20 06:02:18,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:02:18,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:02:19,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:19,239 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:02:19,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:02:19,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:19,337 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:02:19,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:19,451 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:02:19,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19 WrapperNode [2021-11-20 06:02:19,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:19,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:02:19,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:02:19,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:02:19,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,503 INFO L137 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 26 [2021-11-20 06:02:19,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:02:19,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:02:19,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:02:19,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:02:19,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:02:19,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:02:19,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:02:19,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:02:19,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (1/1) ... [2021-11-20 06:02:19,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:02:19,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:19,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:19,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:02:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:02:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:02:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:02:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:02:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:02:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:02:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:02:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:02:19,721 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:02:19,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:02:19,855 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:02:19,861 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:02:19,861 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:02:19,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:19 BoogieIcfgContainer [2021-11-20 06:02:19,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:02:19,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:02:19,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:02:19,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:02:19,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:02:18" (1/3) ... [2021-11-20 06:02:19,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e188da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:02:19, skipping insertion in model container [2021-11-20 06:02:19,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:19" (2/3) ... [2021-11-20 06:02:19,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e188da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:02:19, skipping insertion in model container [2021-11-20 06:02:19,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:19" (3/3) ... [2021-11-20 06:02:19,871 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2021-11-20 06:02:19,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:02:19,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-20 06:02:19,921 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:02:19,928 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:02:19,928 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-20 06:02:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:02:19,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:19,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:19,951 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1438496263, now seen corresponding path program 1 times [2021-11-20 06:02:19,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:19,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875745394] [2021-11-20 06:02:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:19,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:19,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:19,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:02:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:20,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:02:20,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:20,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:20,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:20,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875745394] [2021-11-20 06:02:20,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875745394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:20,242 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:20,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:02:20,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092686941] [2021-11-20 06:02:20,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:20,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:20,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:20,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:20,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:20,279 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:02:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:20,333 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-11-20 06:02:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:02:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 06:02:20,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:20,345 INFO L225 Difference]: With dead ends: 50 [2021-11-20 06:02:20,345 INFO L226 Difference]: Without dead ends: 46 [2021-11-20 06:02:20,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:20,351 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:20,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-20 06:02:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2021-11-20 06:02:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 06:02:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-20 06:02:20,393 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2021-11-20 06:02:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:20,394 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-20 06:02:20,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:02:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-20 06:02:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:02:20,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:20,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:20,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:20,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:20,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:20,610 INFO L85 PathProgramCache]: Analyzing trace with hash -550992582, now seen corresponding path program 1 times [2021-11-20 06:02:20,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:20,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518497759] [2021-11-20 06:02:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:20,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:20,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:20,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:02:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:20,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:02:20,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:20,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:20,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:20,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518497759] [2021-11-20 06:02:20,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518497759] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:20,754 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:20,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:02:20,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573549978] [2021-11-20 06:02:20,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:20,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:02:20,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:02:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:02:20,758 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:02:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:20,808 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-11-20 06:02:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:02:20,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 06:02:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:20,810 INFO L225 Difference]: With dead ends: 40 [2021-11-20 06:02:20,810 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 06:02:20,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:02:20,812 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:20,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 06:02:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2021-11-20 06:02:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-20 06:02:20,820 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 11 [2021-11-20 06:02:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:20,821 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-20 06:02:20,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:02:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-20 06:02:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:02:20,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:20,822 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:20,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:21,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:21,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:21,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:21,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1707085477, now seen corresponding path program 1 times [2021-11-20 06:02:21,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:21,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667533737] [2021-11-20 06:02:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:21,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:21,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:21,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:21,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:02:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:21,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:02:21,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:21,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:21,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:21,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667533737] [2021-11-20 06:02:21,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667533737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:21,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:21,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:02:21,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612268122] [2021-11-20 06:02:21,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:21,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:21,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:21,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:21,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:21,290 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:02:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:21,314 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-20 06:02:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:02:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-20 06:02:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:21,318 INFO L225 Difference]: With dead ends: 25 [2021-11-20 06:02:21,319 INFO L226 Difference]: Without dead ends: 25 [2021-11-20 06:02:21,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:21,331 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:21,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 78 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-20 06:02:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-20 06:02:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-20 06:02:21,347 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16 [2021-11-20 06:02:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:21,348 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-20 06:02:21,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:02:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-20 06:02:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:02:21,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:21,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:21,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:21,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:21,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1380042284, now seen corresponding path program 1 times [2021-11-20 06:02:21,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:21,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527632456] [2021-11-20 06:02:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:21,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:21,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:21,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:02:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:21,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:02:21,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:21,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:22,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:22,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527632456] [2021-11-20 06:02:22,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527632456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:22,099 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:22,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-20 06:02:22,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493679683] [2021-11-20 06:02:22,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:22,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:02:22,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:02:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:02:22,100 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:02:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:22,197 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-11-20 06:02:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:02:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2021-11-20 06:02:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:22,199 INFO L225 Difference]: With dead ends: 42 [2021-11-20 06:02:22,199 INFO L226 Difference]: Without dead ends: 42 [2021-11-20 06:02:22,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:02:22,200 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:22,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 80 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-11-20 06:02:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-20 06:02:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2021-11-20 06:02:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.28) internal successors, (32), 30 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 06:02:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-20 06:02:22,206 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2021-11-20 06:02:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:22,207 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-20 06:02:22,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 06:02:22,207 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-20 06:02:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:02:22,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:22,208 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:22,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:22,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:22,418 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1115268428, now seen corresponding path program 1 times [2021-11-20 06:02:22,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11763565] [2021-11-20 06:02:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:22,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:22,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:22,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:02:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:22,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:02:22,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:22,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:22,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:22,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11763565] [2021-11-20 06:02:22,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11763565] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:22,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:02:22,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-20 06:02:22,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137445128] [2021-11-20 06:02:22,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:22,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:22,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:22,643 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:22,667 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-11-20 06:02:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:02:22,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-20 06:02:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:22,671 INFO L225 Difference]: With dead ends: 28 [2021-11-20 06:02:22,671 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 06:02:22,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:22,675 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:22,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:22,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 06:02:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 06:02:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-20 06:02:22,689 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 17 [2021-11-20 06:02:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:22,690 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-20 06:02:22,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-20 06:02:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:02:22,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:22,692 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:22,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:22,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:22,905 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:22,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash -168362105, now seen corresponding path program 1 times [2021-11-20 06:02:22,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:22,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964550834] [2021-11-20 06:02:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:22,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:22,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:22,907 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:22,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:02:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:22,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:02:22,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:22,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:02:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:23,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:23,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:23,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964550834] [2021-11-20 06:02:23,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964550834] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:23,119 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:23,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:02:23,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224916104] [2021-11-20 06:02:23,119 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:23,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:23,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:23,126 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:02:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:23,182 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-20 06:02:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:02:23,182 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 06:02:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:23,183 INFO L225 Difference]: With dead ends: 30 [2021-11-20 06:02:23,183 INFO L226 Difference]: Without dead ends: 30 [2021-11-20 06:02:23,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:23,184 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:23,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:02:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-20 06:02:23,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-20 06:02:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-11-20 06:02:23,189 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2021-11-20 06:02:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:23,189 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-11-20 06:02:23,189 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:02:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-11-20 06:02:23,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:02:23,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:23,190 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:23,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:23,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:23,401 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash 719141576, now seen corresponding path program 1 times [2021-11-20 06:02:23,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:23,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219345048] [2021-11-20 06:02:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:23,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:23,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:23,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:02:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:23,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:02:23,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:23,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:23,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:23,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219345048] [2021-11-20 06:02:23,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219345048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:02:23,571 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:02:23,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:02:23,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313789443] [2021-11-20 06:02:23,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:23,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:23,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:23,576 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:02:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:23,597 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-11-20 06:02:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:02:23,597 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 06:02:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:23,598 INFO L225 Difference]: With dead ends: 38 [2021-11-20 06:02:23,598 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 06:02:23,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:23,599 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:23,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 06:02:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2021-11-20 06:02:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-20 06:02:23,604 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2021-11-20 06:02:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:23,604 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-20 06:02:23,604 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:02:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-20 06:02:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:02:23,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:23,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:23,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:23,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:23,816 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash -924257906, now seen corresponding path program 1 times [2021-11-20 06:02:23,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:23,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116817507] [2021-11-20 06:02:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:23,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:23,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:23,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:02:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:23,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:02:23,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:23,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:24,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:24,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116817507] [2021-11-20 06:02:24,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116817507] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:02:24,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:02:24,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-20 06:02:24,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688070662] [2021-11-20 06:02:24,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:02:24,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:02:24,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:24,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:02:24,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:24,021 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:24,033 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-20 06:02:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:02:24,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-11-20 06:02:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:24,034 INFO L225 Difference]: With dead ends: 24 [2021-11-20 06:02:24,034 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 06:02:24,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:02:24,035 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:24,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:02:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 06:02:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-20 06:02:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-20 06:02:24,039 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2021-11-20 06:02:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:24,040 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-20 06:02:24,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-20 06:02:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:02:24,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:24,041 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:24,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:24,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:24,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:24,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1412776041, now seen corresponding path program 1 times [2021-11-20 06:02:24,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:24,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268475080] [2021-11-20 06:02:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:24,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:24,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:24,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:24,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:02:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:24,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:02:24,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:24,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:24,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:24,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268475080] [2021-11-20 06:02:24,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268475080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:02:24,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:02:24,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-11-20 06:02:24,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022788858] [2021-11-20 06:02:24,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:02:24,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:02:24,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:02:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:02:24,756 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:02:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:24,856 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-20 06:02:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:02:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2021-11-20 06:02:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:24,858 INFO L225 Difference]: With dead ends: 27 [2021-11-20 06:02:24,858 INFO L226 Difference]: Without dead ends: 25 [2021-11-20 06:02:24,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:02:24,859 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:24,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 61 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2021-11-20 06:02:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-20 06:02:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-20 06:02:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-20 06:02:24,867 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2021-11-20 06:02:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:24,867 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-20 06:02:24,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:02:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-20 06:02:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 06:02:24,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:24,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:24,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:25,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:25,081 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 846384368, now seen corresponding path program 1 times [2021-11-20 06:02:25,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:25,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105840045] [2021-11-20 06:02:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:25,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:25,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:25,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:25,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:02:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:25,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:02:25,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:25,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:02:25,267 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:02:25,268 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 27 treesize of output 34 [2021-11-20 06:02:25,455 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-20 06:02:25,456 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 39 treesize of output 42 [2021-11-20 06:02:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:25,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:29,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:29,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105840045] [2021-11-20 06:02:29,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105840045] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:29,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:02:29,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 13 [2021-11-20 06:02:29,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153620252] [2021-11-20 06:02:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:29,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:02:29,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:02:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=143, Unknown=2, NotChecked=0, Total=182 [2021-11-20 06:02:29,967 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:30,029 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-11-20 06:02:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:02:30,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-11-20 06:02:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:30,030 INFO L225 Difference]: With dead ends: 32 [2021-11-20 06:02:30,031 INFO L226 Difference]: Without dead ends: 32 [2021-11-20 06:02:30,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=37, Invalid=143, Unknown=2, NotChecked=0, Total=182 [2021-11-20 06:02:30,032 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:30,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 91 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 77 Unchecked, 0.1s Time] [2021-11-20 06:02:30,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-20 06:02:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-20 06:02:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-11-20 06:02:30,036 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 21 [2021-11-20 06:02:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:30,036 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-11-20 06:02:30,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-11-20 06:02:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 06:02:30,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:30,037 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:30,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:30,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:30,238 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash 649870863, now seen corresponding path program 1 times [2021-11-20 06:02:30,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:30,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497984351] [2021-11-20 06:02:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:30,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:30,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:30,240 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:30,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:02:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:30,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:02:30,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:30,310 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:02:30,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-20 06:02:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:30,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:30,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:30,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497984351] [2021-11-20 06:02:30,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497984351] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:02:30,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:02:30,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-11-20 06:02:30,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771148712] [2021-11-20 06:02:30,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:02:30,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:02:30,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:30,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:02:30,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:02:30,867 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:31,027 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-20 06:02:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:02:31,028 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-20 06:02:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:31,029 INFO L225 Difference]: With dead ends: 31 [2021-11-20 06:02:31,029 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 06:02:31,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:02:31,030 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:31,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2021-11-20 06:02:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 06:02:31,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2021-11-20 06:02:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-20 06:02:31,034 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2021-11-20 06:02:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:31,034 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-20 06:02:31,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:02:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-20 06:02:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:02:31,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:31,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:31,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:31,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:31,236 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1626560659, now seen corresponding path program 1 times [2021-11-20 06:02:31,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:31,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213399842] [2021-11-20 06:02:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:31,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:31,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:31,237 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:31,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:02:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:31,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 06:02:31,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:02:33,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:37,954 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~p~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_5| (Array (_ BitVec 32) (_ BitVec 1)))) (or (exists ((|v_ULTIMATE.start_entry_point_#t~ret39#1.base_42| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret39#1.base_42|))))) (not (= (store (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret39#1.base_42| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~p~0#1.base_BEFORE_CALL_8| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_5|)))) (= (store (store |c_#valid| |c_ldv_malloc_#res.base| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~p~0#1.base_BEFORE_CALL_8| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_5|))) is different from false [2021-11-20 06:02:48,273 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_6| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ldv_malloc_#res.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~ret39#1.base_42| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ldv_malloc_#res.base_83| (_ bv1 1)))) (or (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_6| (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~ret39#1.base_42| (_ bv0 1)) |v_ldv_malloc_#res.base_83| (_ bv0 1))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_entry_point_#t~ret39#1.base_42|))))) (exists ((|v_ULTIMATE.start_entry_point_#t~ret38#1.base_40| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~ret39#1.base_42| (_ BitVec 32))) (let ((.cse1 (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_40| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_40|))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_entry_point_#t~ret39#1.base_42|)))))) (not (= (store (store .cse1 |v_ULTIMATE.start_entry_point_#t~ret39#1.base_42| (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret38#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_6|))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_83|))))))) is different from false [2021-11-20 06:02:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-20 06:02:48,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:02:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213399842] [2021-11-20 06:02:48,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213399842] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:02:48,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:02:48,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2021-11-20 06:02:48,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033568338] [2021-11-20 06:02:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:02:48,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:02:48,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:02:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:02:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=273, Unknown=24, NotChecked=70, Total=420 [2021-11-20 06:02:48,530 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:48,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:02:48,680 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-11-20 06:02:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:02:48,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-11-20 06:02:48,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:02:48,681 INFO L225 Difference]: With dead ends: 33 [2021-11-20 06:02:48,681 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 06:02:48,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=53, Invalid=273, Unknown=24, NotChecked=70, Total=420 [2021-11-20 06:02:48,683 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:02:48,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-11-20 06:02:48,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 06:02:48,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-20 06:02:48,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-20 06:02:48,686 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 23 [2021-11-20 06:02:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:02:48,686 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-20 06:02:48,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:02:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-20 06:02:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:02:48,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:02:48,694 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:02:48,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:48,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:02:48,908 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-20 06:02:48,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643378, now seen corresponding path program 1 times [2021-11-20 06:02:48,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:02:48,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687818000] [2021-11-20 06:02:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:48,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:02:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:02:48,910 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:02:48,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:02:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:48,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 06:02:48,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:49,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:55,799 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= (store (store |c_#valid| (_ bv0 32) (_ bv0 1)) |c_ldv_malloc_#res.base| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10|) (exists ((|v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45|))))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10| (store (store (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ bv1 1)) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ bv0 1)))))))) is different from false [2021-11-20 06:02:57,804 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10| (Array (_ BitVec 32) (_ BitVec 1)))) (or (= (store (store |c_#valid| (_ bv0 32) (_ bv0 1)) |c_ldv_malloc_#res.base| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10|) (exists ((|v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45|))))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10| (store (store (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ bv1 1)) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ bv0 1)))))))) is different from true [2021-11-20 06:02:59,910 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ldv_malloc_#res.base_91| (_ BitVec 32))) (or (= (store (store (store |c_#valid| |v_ldv_malloc_#res.base_91| (_ bv1 1)) (_ bv0 32) (_ bv0 1)) |v_ldv_malloc_#res.base_91| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10|) (exists ((|v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45|))))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_10| (store (store (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ bv1 1)) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret38#1.base_45| (_ bv0 1)))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_91|))))))) is different from true [2021-11-20 06:03:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-20 06:03:00,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:03:00,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687818000] [2021-11-20 06:03:00,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687818000] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:03:00,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:03:00,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2021-11-20 06:03:00,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550869237] [2021-11-20 06:03:00,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:03:00,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 06:03:00,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:03:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 06:03:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=396, Unknown=5, NotChecked=82, Total=552 [2021-11-20 06:03:00,060 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 19 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:03:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:03:00,342 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-11-20 06:03:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:03:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 19 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2021-11-20 06:03:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:03:00,343 INFO L225 Difference]: With dead ends: 23 [2021-11-20 06:03:00,343 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:03:00,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=87, Invalid=468, Unknown=5, NotChecked=90, Total=650 [2021-11-20 06:03:00,344 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:03:00,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 92 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 136 Invalid, 0 Unknown, 89 Unchecked, 0.2s Time] [2021-11-20 06:03:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:03:00,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:03:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:03:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:03:00,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-11-20 06:03:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:03:00,346 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:03:00,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 19 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 06:03:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:03:00,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:03:00,348 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (6 of 7 remaining) [2021-11-20 06:03:00,349 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (5 of 7 remaining) [2021-11-20 06:03:00,349 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (4 of 7 remaining) [2021-11-20 06:03:00,349 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (3 of 7 remaining) [2021-11-20 06:03:00,349 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 7 remaining) [2021-11-20 06:03:00,349 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (1 of 7 remaining) [2021-11-20 06:03:00,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2021-11-20 06:03:00,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-20 06:03:00,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:03:00,564 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:03:00,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:03:00,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:03:00 BoogieIcfgContainer [2021-11-20 06:03:00,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:03:00,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:03:00,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:03:00,568 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:03:00,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:19" (3/4) ... [2021-11-20 06:03:00,571 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:03:00,577 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2021-11-20 06:03:00,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-20 06:03:00,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 06:03:00,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 06:03:00,619 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:03:00,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:03:00,619 INFO L158 Benchmark]: Toolchain (without parser) took 41980.70ms. Allocated memory was 54.5MB in the beginning and 107.0MB in the end (delta: 52.4MB). Free memory was 29.0MB in the beginning and 35.7MB in the end (delta: -6.7MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2021-11-20 06:03:00,620 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 35.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:03:00,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 811.35ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 28.9MB in the beginning and 43.4MB in the end (delta: -14.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-11-20 06:03:00,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.20ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 41.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:03:00,621 INFO L158 Benchmark]: Boogie Preprocessor took 29.77ms. Allocated memory is still 67.1MB. Free memory was 41.2MB in the beginning and 39.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:03:00,622 INFO L158 Benchmark]: RCFGBuilder took 328.31ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 42.4MB in the end (delta: -2.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-20 06:03:00,633 INFO L158 Benchmark]: TraceAbstraction took 40702.58ms. Allocated memory was 67.1MB in the beginning and 107.0MB in the end (delta: 39.8MB). Free memory was 41.9MB in the beginning and 37.9MB in the end (delta: 4.0MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2021-11-20 06:03:00,633 INFO L158 Benchmark]: Witness Printer took 51.43ms. Allocated memory is still 107.0MB. Free memory was 37.9MB in the beginning and 35.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:03:00,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 35.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 811.35ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 28.9MB in the beginning and 43.4MB in the end (delta: -14.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.20ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 41.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.77ms. Allocated memory is still 67.1MB. Free memory was 41.2MB in the beginning and 39.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.31ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 42.4MB in the end (delta: -2.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * TraceAbstraction took 40702.58ms. Allocated memory was 67.1MB in the beginning and 107.0MB in the end (delta: 39.8MB). Free memory was 41.9MB in the beginning and 37.9MB in the end (delta: 4.0MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. * Witness Printer took 51.43ms. Allocated memory is still 107.0MB. Free memory was 37.9MB in the beginning and 35.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 765]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 40.6s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 1158 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 254 IncrementalHoareTripleChecker+Unchecked, 856 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 630 IncrementalHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 302 mSDtfsCounter, 630 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 455 GetRequests, 338 SyntacticMatches, 11 SemanticMatches, 106 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 31.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 35.7s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 444 ConstructedInterpolants, 58 QuantifiedInterpolants, 3562 SizeOfPredicates, 8 NumberOfNonLiveVariables, 695 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 26 InterpolantComputations, 15 PerfectInterpolantSequences, 62/88 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 06:03:00,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c87dd-2c91-4935-8d3a-b5e9885152c9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE