./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX --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 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:03,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:03,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:03,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:03,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:03,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:03,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:03,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:03,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:03,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:03,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:03,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:03,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:03,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:03,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:03,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:03,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:03,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:03,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:03,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:03,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:03,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:03,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:03,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:03,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:03,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:03,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:03,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:03,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:03,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:03,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:03,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:03,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:03,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:03,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:03,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:03,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:03,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:03,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:03,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:03,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:03,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:09:03,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:03,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:03,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:03,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:03,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:03,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:03,947 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:03,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:03,948 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:03,948 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:03,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:03,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:03,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:03,950 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:09:03,950 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:09:03,951 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:09:03,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:03,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:09:03,952 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:03,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:03,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:03,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:03,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:03,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:03,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:03,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:03,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:03,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:03,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:03,955 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_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b [2021-11-09 09:09:04,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:04,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:04,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:04,271 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:04,272 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:04,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-09 09:09:04,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/c6b926c3f/78a2ad674ed4486e9f6f8a10d725bcf6/FLAG0d05bc65a [2021-11-09 09:09:05,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:05,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-09 09:09:05,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/c6b926c3f/78a2ad674ed4486e9f6f8a10d725bcf6/FLAG0d05bc65a [2021-11-09 09:09:05,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/c6b926c3f/78a2ad674ed4486e9f6f8a10d725bcf6 [2021-11-09 09:09:05,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:05,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:09:05,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:05,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:05,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:05,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:05" (1/1) ... [2021-11-09 09:09:05,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6e155c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:05, skipping insertion in model container [2021-11-09 09:09:05,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:05" (1/1) ... [2021-11-09 09:09:05,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:05,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:05,796 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-09 09:09:05,917 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-09 09:09:05,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:05,935 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) [2021-11-09 09:09:05,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35897c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:05, skipping insertion in model container [2021-11-09 09:09:05,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:05,943 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:09:05,945 INFO L168 Benchmark]: Toolchain (without parser) took 764.51 ms. Allocated memory is still 92.3 MB. Free memory was 69.0 MB in the beginning and 58.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:05,946 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 67.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:05,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.04 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 58.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:05,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 67.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 762.04 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 58.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX --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 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:08,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:08,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:08,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:08,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:08,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:08,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:08,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:08,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:08,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:08,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:08,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:08,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:08,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:08,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:08,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:08,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:08,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:08,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:08,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:08,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:08,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:08,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:08,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:08,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:08,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:08,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:08,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:08,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:08,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:08,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:08,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:08,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:08,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:08,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:08,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:08,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:08,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:08,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:08,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:08,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:08,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:09:08,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:08,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:08,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:08,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:08,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:08,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:08,526 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:08,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:08,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:08,527 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:08,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:08,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:08,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:08,528 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:09:08,528 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:09:08,529 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:09:08,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:08,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:09:08,529 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:09:08,529 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:09:08,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:08,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:08,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:08,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:08,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:08,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:08,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:08,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:08,531 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:09:08,531 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:09:08,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:08,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:09:08,532 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_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb0e4c4138981b5d0263d433279609e9b809291f20fa6c19565d53ef342ae2b [2021-11-09 09:09:08,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:08,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:08,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:08,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:08,952 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:08,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-09 09:09:09,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/1da100b9a/9c7807537a6b4027b5839f9bb820541c/FLAG426a858dd [2021-11-09 09:09:09,810 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:09,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i [2021-11-09 09:09:09,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/1da100b9a/9c7807537a6b4027b5839f9bb820541c/FLAG426a858dd [2021-11-09 09:09:09,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/data/1da100b9a/9c7807537a6b4027b5839f9bb820541c [2021-11-09 09:09:09,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:09,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:09:09,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:09,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:09,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:09,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:09" (1/1) ... [2021-11-09 09:09:09,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505eeb6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:09, skipping insertion in model container [2021-11-09 09:09:09,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:09" (1/1) ... [2021-11-09 09:09:10,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:10,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:10,604 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-09 09:09:10,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-09 09:09:10,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:10,755 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:09:10,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:10,788 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-09 09:09:10,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-09 09:09:10,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:10,855 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:10,898 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[37019,37032] [2021-11-09 09:09:10,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-1.i[47352,47365] [2021-11-09 09:09:10,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:11,043 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:11,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11 WrapperNode [2021-11-09 09:09:11,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:11,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:11,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:11,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:11,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:11,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:11,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:11,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:11,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (1/1) ... [2021-11-09 09:09:11,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:11,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:11,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:09:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:09:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:09:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:09:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:09:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:09:11,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:09:11,328 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 09:09:11,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 09:09:11,328 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 09:09:11,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:09:11,329 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 09:09:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 09:09:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 09:09:11,329 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 09:09:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 09:09:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:09:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 09:09:11,330 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 09:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 09:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 09:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 09:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 09:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 09:09:11,331 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 09:09:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 09:09:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 09:09:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 09:09:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 09:09:11,332 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 09:09:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 09:09:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 09:09:11,333 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 09:09:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 09:09:11,334 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 09:09:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 09:09:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 09:09:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 09:09:11,335 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 09:09:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 09:09:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 09:09:11,336 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 09:09:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 09:09:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 09:09:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 09:09:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 09:09:11,337 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 09:09:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 09:09:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 09:09:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 09:09:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 09:09:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 09:09:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 09:09:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 09:09:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 09:09:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 09:09:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 09:09:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 09:09:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 09:09:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 09:09:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 09:09:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 09:09:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 09:09:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:09:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:09:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:09:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:09:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:09:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:09:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:09:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:09:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:09:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:09:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:09:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:09:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:09:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:09:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:09:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:09:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:09:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:09:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:09:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:09:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:09:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:09:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:09:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:09:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:09:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:09:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:09:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:09:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:09:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:09:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:09:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:09:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:09:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:09:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:09:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:09:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:09:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:09:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:09:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:09:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:09:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:09:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:09:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:09:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:09:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:09:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:09:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:09:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:09:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:09:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:09:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:09:11,371 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:09:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:09:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:09:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:09:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:09:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:09:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:09:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:09:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:09:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:09:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:09:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:09:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:09:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:09:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:09:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:09:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:09:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:09:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:09:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:09:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:09:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:09:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:09:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:09:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:09:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:09:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:09:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:09:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:09:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:09:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:09:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:09:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:09:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:09:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:09:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:09:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:09:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:09:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:09:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:09:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:09:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:09:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:09:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:09:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:09:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:09:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:09:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:09:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:09:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:09:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:09:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:09:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:09:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:09:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:09:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure clock [2021-11-09 09:09:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure time [2021-11-09 09:09:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure difftime [2021-11-09 09:09:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2021-11-09 09:09:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2021-11-09 09:09:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure strftime_l [2021-11-09 09:09:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime [2021-11-09 09:09:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2021-11-09 09:09:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime_r [2021-11-09 09:09:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure localtime_r [2021-11-09 09:09:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure asctime [2021-11-09 09:09:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2021-11-09 09:09:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure asctime_r [2021-11-09 09:09:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure ctime_r [2021-11-09 09:09:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure tzset [2021-11-09 09:09:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure stime [2021-11-09 09:09:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure timegm [2021-11-09 09:09:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure timelocal [2021-11-09 09:09:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure dysize [2021-11-09 09:09:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure nanosleep [2021-11-09 09:09:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getres [2021-11-09 09:09:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure clock_gettime [2021-11-09 09:09:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure clock_settime [2021-11-09 09:09:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure clock_nanosleep [2021-11-09 09:09:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getcpuclockid [2021-11-09 09:09:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure timer_create [2021-11-09 09:09:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure timer_delete [2021-11-09 09:09:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure timer_settime [2021-11-09 09:09:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure timer_gettime [2021-11-09 09:09:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure timer_getoverrun [2021-11-09 09:09:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_get [2021-11-09 09:09:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 09:09:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 09:09:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 09:09:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 09:09:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 09:09:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 09:09:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:09:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 09:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 09:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 09:09:11,911 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 09:09:16,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:16,447 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-09 09:09:16,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:16 BoogieIcfgContainer [2021-11-09 09:09:16,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:16,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:16,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:16,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:16,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:09" (1/3) ... [2021-11-09 09:09:16,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2232ce63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:16, skipping insertion in model container [2021-11-09 09:09:16,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:11" (2/3) ... [2021-11-09 09:09:16,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2232ce63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:16, skipping insertion in model container [2021-11-09 09:09:16,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:16" (3/3) ... [2021-11-09 09:09:16,462 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-1.i [2021-11-09 09:09:16,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:16,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-09 09:09:16,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:16,537 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 [2021-11-09 09:09:16,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-09 09:09:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 09:09:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:09:16,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:16,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:16,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623229, now seen corresponding path program 1 times [2021-11-09 09:09:16,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:16,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119438709] [2021-11-09 09:09:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:16,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:16,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:16,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:16,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:09:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:16,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:16,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:17,050 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 [2021-11-09 09:09:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:17,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:17,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:17,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119438709] [2021-11-09 09:09:17,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119438709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:17,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:17,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:09:17,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566046002] [2021-11-09 09:09:17,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:17,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:17,125 INFO L87 Difference]: Start difference. First operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:18,907 INFO L93 Difference]: Finished difference Result 877 states and 933 transitions. [2021-11-09 09:09:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 09:09:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:18,937 INFO L225 Difference]: With dead ends: 877 [2021-11-09 09:09:18,937 INFO L226 Difference]: Without dead ends: 874 [2021-11-09 09:09:18,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-09 09:09:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 873. [2021-11-09 09:09:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 445 states have (on average 2.042696629213483) internal successors, (909), 862 states have internal predecessors, (909), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 930 transitions. [2021-11-09 09:09:19,027 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 930 transitions. Word has length 7 [2021-11-09 09:09:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:19,028 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 930 transitions. [2021-11-09 09:09:19,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 930 transitions. [2021-11-09 09:09:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:09:19,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:19,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:19,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:19,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:19,241 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623228, now seen corresponding path program 1 times [2021-11-09 09:09:19,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:19,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023346766] [2021-11-09 09:09:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:19,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:19,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:19,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:19,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:09:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:19,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:19,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:19,488 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 [2021-11-09 09:09:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:19,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:19,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:19,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023346766] [2021-11-09 09:09:19,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023346766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:19,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:19,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:09:19,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809801202] [2021-11-09 09:09:19,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:19,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:19,581 INFO L87 Difference]: Start difference. First operand 873 states and 930 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:24,266 INFO L93 Difference]: Finished difference Result 1156 states and 1238 transitions. [2021-11-09 09:09:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:24,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 09:09:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:24,274 INFO L225 Difference]: With dead ends: 1156 [2021-11-09 09:09:24,275 INFO L226 Difference]: Without dead ends: 1156 [2021-11-09 09:09:24,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-09 09:09:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 908. [2021-11-09 09:09:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 489 states have (on average 2.0204498977505114) internal successors, (988), 897 states have internal predecessors, (988), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1009 transitions. [2021-11-09 09:09:24,309 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1009 transitions. Word has length 7 [2021-11-09 09:09:24,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:24,309 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1009 transitions. [2021-11-09 09:09:24,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1009 transitions. [2021-11-09 09:09:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:09:24,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:24,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:24,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-09 09:09:24,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:24,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 372320716, now seen corresponding path program 1 times [2021-11-09 09:09:24,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:24,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913376746] [2021-11-09 09:09:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:24,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:24,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:24,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:24,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:09:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:24,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:24,792 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 [2021-11-09 09:09:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:24,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:24,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:24,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913376746] [2021-11-09 09:09:24,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913376746] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:24,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:24,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:09:24,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513677441] [2021-11-09 09:09:24,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:24,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:24,854 INFO L87 Difference]: Start difference. First operand 908 states and 1009 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:26,809 INFO L93 Difference]: Finished difference Result 1074 states and 1193 transitions. [2021-11-09 09:09:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 09:09:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:26,823 INFO L225 Difference]: With dead ends: 1074 [2021-11-09 09:09:26,823 INFO L226 Difference]: Without dead ends: 1074 [2021-11-09 09:09:26,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-09 09:09:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 861. [2021-11-09 09:09:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 489 states have (on average 1.918200408997955) internal successors, (938), 850 states have internal predecessors, (938), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 959 transitions. [2021-11-09 09:09:26,853 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 959 transitions. Word has length 12 [2021-11-09 09:09:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:26,853 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 959 transitions. [2021-11-09 09:09:26,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 959 transitions. [2021-11-09 09:09:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:09:26,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:26,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:26,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:27,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:27,067 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash 372320717, now seen corresponding path program 1 times [2021-11-09 09:09:27,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:27,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303506386] [2021-11-09 09:09:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:27,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:27,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:27,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:27,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:09:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:27,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:27,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:27,353 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 [2021-11-09 09:09:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:27,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:27,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:27,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303506386] [2021-11-09 09:09:27,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303506386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:27,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:27,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:09:27,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646126672] [2021-11-09 09:09:27,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:27,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:27,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:27,537 INFO L87 Difference]: Start difference. First operand 861 states and 959 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:31,443 INFO L93 Difference]: Finished difference Result 1106 states and 1188 transitions. [2021-11-09 09:09:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 09:09:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:31,451 INFO L225 Difference]: With dead ends: 1106 [2021-11-09 09:09:31,451 INFO L226 Difference]: Without dead ends: 1106 [2021-11-09 09:09:31,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-09 09:09:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 851. [2021-11-09 09:09:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8916155419222904) internal successors, (925), 840 states have internal predecessors, (925), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 946 transitions. [2021-11-09 09:09:31,478 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 946 transitions. Word has length 12 [2021-11-09 09:09:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:31,478 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 946 transitions. [2021-11-09 09:09:31,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 946 transitions. [2021-11-09 09:09:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:09:31,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:31,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:31,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:31,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:31,691 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2123497305, now seen corresponding path program 1 times [2021-11-09 09:09:31,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:31,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140314566] [2021-11-09 09:09:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:31,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:31,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:31,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:09:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:31,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:31,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:31,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:09:31,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:09:31,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:09:32,030 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-09 09:09:32,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-09 09:09:32,119 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-09 09:09:32,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-09 09:09:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:32,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:32,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:32,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140314566] [2021-11-09 09:09:32,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140314566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:32,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:32,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:09:32,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48987727] [2021-11-09 09:09:32,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:09:32,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:09:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:32,249 INFO L87 Difference]: Start difference. First operand 851 states and 946 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:34,359 INFO L93 Difference]: Finished difference Result 1057 states and 1172 transitions. [2021-11-09 09:09:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:34,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-09 09:09:34,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:34,367 INFO L225 Difference]: With dead ends: 1057 [2021-11-09 09:09:34,367 INFO L226 Difference]: Without dead ends: 1057 [2021-11-09 09:09:34,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:09:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-11-09 09:09:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 851. [2021-11-09 09:09:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8895705521472392) internal successors, (924), 840 states have internal predecessors, (924), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 945 transitions. [2021-11-09 09:09:34,391 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 945 transitions. Word has length 14 [2021-11-09 09:09:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:34,392 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 945 transitions. [2021-11-09 09:09:34,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 945 transitions. [2021-11-09 09:09:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:09:34,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:34,393 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:34,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:34,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:34,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:34,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1316346504, now seen corresponding path program 1 times [2021-11-09 09:09:34,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:34,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112975106] [2021-11-09 09:09:34,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:34,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:34,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:34,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:34,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:09:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:34,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:09:34,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:34,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:34,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:34,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112975106] [2021-11-09 09:09:34,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112975106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:34,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:34,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 09:09:34,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711743560] [2021-11-09 09:09:34,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:34,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:34,952 INFO L87 Difference]: Start difference. First operand 851 states and 945 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:34,979 INFO L93 Difference]: Finished difference Result 818 states and 911 transitions. [2021-11-09 09:09:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:34,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-09 09:09:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:34,985 INFO L225 Difference]: With dead ends: 818 [2021-11-09 09:09:34,985 INFO L226 Difference]: Without dead ends: 818 [2021-11-09 09:09:34,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-11-09 09:09:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 809. [2021-11-09 09:09:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 471 states have (on average 1.870488322717622) internal successors, (881), 798 states have internal predecessors, (881), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:35,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 902 transitions. [2021-11-09 09:09:35,009 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 902 transitions. Word has length 22 [2021-11-09 09:09:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:35,010 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 902 transitions. [2021-11-09 09:09:35,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 902 transitions. [2021-11-09 09:09:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:09:35,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:35,011 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:35,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:35,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:35,224 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:35,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2006361010, now seen corresponding path program 1 times [2021-11-09 09:09:35,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:35,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942614417] [2021-11-09 09:09:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:35,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:35,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:35,226 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:35,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:09:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:35,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:35,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:35,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:35,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:35,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942614417] [2021-11-09 09:09:35,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942614417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:35,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:35,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 09:09:35,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76578612] [2021-11-09 09:09:35,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:35,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:35,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:35,599 INFO L87 Difference]: Start difference. First operand 809 states and 902 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:35,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:35,696 INFO L93 Difference]: Finished difference Result 797 states and 883 transitions. [2021-11-09 09:09:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:35,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-09 09:09:35,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:35,702 INFO L225 Difference]: With dead ends: 797 [2021-11-09 09:09:35,702 INFO L226 Difference]: Without dead ends: 797 [2021-11-09 09:09:35,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:35,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-11-09 09:09:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 787. [2021-11-09 09:09:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 463 states have (on average 1.8401727861771058) internal successors, (852), 776 states have internal predecessors, (852), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 873 transitions. [2021-11-09 09:09:35,754 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 873 transitions. Word has length 24 [2021-11-09 09:09:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:35,754 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 873 transitions. [2021-11-09 09:09:35,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:35,755 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 873 transitions. [2021-11-09 09:09:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 09:09:35,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:35,757 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:35,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:35,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:35,970 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash -366881472, now seen corresponding path program 1 times [2021-11-09 09:09:35,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:35,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476992038] [2021-11-09 09:09:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:35,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:35,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:35,972 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:35,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:09:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:36,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:36,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:36,274 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 [2021-11-09 09:09:36,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:36,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:36,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:36,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476992038] [2021-11-09 09:09:36,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476992038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:36,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:36,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:09:36,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654266178] [2021-11-09 09:09:36,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:36,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:36,585 INFO L87 Difference]: Start difference. First operand 787 states and 873 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:38,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:38,426 INFO L93 Difference]: Finished difference Result 1008 states and 1115 transitions. [2021-11-09 09:09:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:38,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 09:09:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:38,435 INFO L225 Difference]: With dead ends: 1008 [2021-11-09 09:09:38,435 INFO L226 Difference]: Without dead ends: 1008 [2021-11-09 09:09:38,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-09 09:09:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 783. [2021-11-09 09:09:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 463 states have (on average 1.8315334773218142) internal successors, (848), 772 states have internal predecessors, (848), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 869 transitions. [2021-11-09 09:09:38,462 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 869 transitions. Word has length 38 [2021-11-09 09:09:38,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:38,463 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 869 transitions. [2021-11-09 09:09:38,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 869 transitions. [2021-11-09 09:09:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 09:09:38,465 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:38,465 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:38,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-09 09:09:38,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:38,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:38,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash -366881471, now seen corresponding path program 1 times [2021-11-09 09:09:38,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:38,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406531787] [2021-11-09 09:09:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:38,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:38,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:38,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:09:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:38,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:09:38,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:39,010 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 [2021-11-09 09:09:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:39,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:40,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:40,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406531787] [2021-11-09 09:09:40,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406531787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:40,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:40,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:09:40,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001051996] [2021-11-09 09:09:40,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:09:40,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:09:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:40,030 INFO L87 Difference]: Start difference. First operand 783 states and 869 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:46,268 INFO L93 Difference]: Finished difference Result 1046 states and 1119 transitions. [2021-11-09 09:09:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:46,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 09:09:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:46,276 INFO L225 Difference]: With dead ends: 1046 [2021-11-09 09:09:46,276 INFO L226 Difference]: Without dead ends: 1046 [2021-11-09 09:09:46,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:09:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-11-09 09:09:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 779. [2021-11-09 09:09:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 463 states have (on average 1.8228941684665227) internal successors, (844), 768 states have internal predecessors, (844), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 865 transitions. [2021-11-09 09:09:46,299 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 865 transitions. Word has length 38 [2021-11-09 09:09:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:46,300 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 865 transitions. [2021-11-09 09:09:46,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 865 transitions. [2021-11-09 09:09:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:09:46,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:46,302 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:46,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:46,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:46,514 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:46,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:46,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1799597351, now seen corresponding path program 1 times [2021-11-09 09:09:46,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:46,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937427400] [2021-11-09 09:09:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:46,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:46,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:46,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:46,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:09:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:46,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:46,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:47,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:47,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:47,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937427400] [2021-11-09 09:09:47,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937427400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:47,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:47,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:09:47,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997742377] [2021-11-09 09:09:47,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:47,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:47,224 INFO L87 Difference]: Start difference. First operand 779 states and 865 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:47,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:47,306 INFO L93 Difference]: Finished difference Result 782 states and 864 transitions. [2021-11-09 09:09:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-11-09 09:09:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:47,312 INFO L225 Difference]: With dead ends: 782 [2021-11-09 09:09:47,313 INFO L226 Difference]: Without dead ends: 782 [2021-11-09 09:09:47,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-09 09:09:47,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 773. [2021-11-09 09:09:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 457 states have (on average 1.824945295404814) internal successors, (834), 762 states have internal predecessors, (834), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:09:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 855 transitions. [2021-11-09 09:09:47,340 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 855 transitions. Word has length 53 [2021-11-09 09:09:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:47,343 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 855 transitions. [2021-11-09 09:09:47,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 855 transitions. [2021-11-09 09:09:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:09:47,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:47,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:47,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:47,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:47,566 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:47,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:47,567 INFO L85 PathProgramCache]: Analyzing trace with hash -387318643, now seen corresponding path program 1 times [2021-11-09 09:09:47,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:47,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489631696] [2021-11-09 09:09:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:47,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:47,570 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:47,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:09:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:47,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:47,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:48,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:48,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:48,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489631696] [2021-11-09 09:09:48,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489631696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:48,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:48,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:09:48,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55189542] [2021-11-09 09:09:48,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:48,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:48,958 INFO L87 Difference]: Start difference. First operand 773 states and 855 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:49,096 INFO L93 Difference]: Finished difference Result 962 states and 1057 transitions. [2021-11-09 09:09:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-09 09:09:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:49,102 INFO L225 Difference]: With dead ends: 962 [2021-11-09 09:09:49,103 INFO L226 Difference]: Without dead ends: 962 [2021-11-09 09:09:49,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-11-09 09:09:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 907. [2021-11-09 09:09:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 590 states have (on average 1.7474576271186442) internal successors, (1031), 895 states have internal predecessors, (1031), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 09:09:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1054 transitions. [2021-11-09 09:09:49,130 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1054 transitions. Word has length 61 [2021-11-09 09:09:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:49,130 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1054 transitions. [2021-11-09 09:09:49,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1054 transitions. [2021-11-09 09:09:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:09:49,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:49,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:49,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:49,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:49,352 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:09:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1860046283, now seen corresponding path program 1 times [2021-11-09 09:09:49,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:49,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471030640] [2021-11-09 09:09:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:49,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:49,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:49,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:49,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:09:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:49,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:09:49,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:50,026 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 [2021-11-09 09:09:50,033 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 [2021-11-09 09:09:50,807 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:09:50,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-09 09:09:50,814 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:09:50,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-11-09 09:09:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:50,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:58,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:58,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471030640] [2021-11-09 09:09:58,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471030640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:58,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:58,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:09:58,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869131231] [2021-11-09 09:09:58,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:09:58,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:09:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-09 09:09:58,186 INFO L87 Difference]: Start difference. First operand 907 states and 1054 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:10,923 INFO L93 Difference]: Finished difference Result 1169 states and 1401 transitions. [2021-11-09 09:10:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:10:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-09 09:10:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:10,930 INFO L225 Difference]: With dead ends: 1169 [2021-11-09 09:10:10,930 INFO L226 Difference]: Without dead ends: 1169 [2021-11-09 09:10:10,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-09 09:10:10,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-11-09 09:10:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 869. [2021-11-09 09:10:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 590 states have (on average 1.6830508474576271) internal successors, (993), 857 states have internal predecessors, (993), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 09:10:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1016 transitions. [2021-11-09 09:10:10,959 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1016 transitions. Word has length 64 [2021-11-09 09:10:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:10,959 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1016 transitions. [2021-11-09 09:10:10,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1016 transitions. [2021-11-09 09:10:10,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:10:10,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:10,961 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:10,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:11,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:11,174 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:10:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash -946127520, now seen corresponding path program 1 times [2021-11-09 09:10:11,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:11,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805143947] [2021-11-09 09:10:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:11,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:11,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:11,177 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:11,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:10:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:11,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:10:11,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:12,092 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 [2021-11-09 09:10:12,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-09 09:10:12,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 09:10:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:12,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:12,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:12,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805143947] [2021-11-09 09:10:12,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805143947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:10:12,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:10:12,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:10:12,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846130084] [2021-11-09 09:10:12,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:10:12,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:10:12,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:10:12,329 INFO L87 Difference]: Start difference. First operand 869 states and 1016 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:14,937 INFO L93 Difference]: Finished difference Result 868 states and 1015 transitions. [2021-11-09 09:10:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:10:14,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 09:10:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:14,941 INFO L225 Difference]: With dead ends: 868 [2021-11-09 09:10:14,941 INFO L226 Difference]: Without dead ends: 868 [2021-11-09 09:10:14,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:10:14,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-09 09:10:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2021-11-09 09:10:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 590 states have (on average 1.6813559322033897) internal successors, (992), 856 states have internal predecessors, (992), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 09:10:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1015 transitions. [2021-11-09 09:10:14,978 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1015 transitions. Word has length 69 [2021-11-09 09:10:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:14,979 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1015 transitions. [2021-11-09 09:10:14,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1015 transitions. [2021-11-09 09:10:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:10:14,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:14,981 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:14,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:15,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:15,196 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:10:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash -946127519, now seen corresponding path program 1 times [2021-11-09 09:10:15,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:15,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114958224] [2021-11-09 09:10:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:15,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:15,198 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:15,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:10:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:15,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:10:15,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:15,873 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 [2021-11-09 09:10:15,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-09 09:10:15,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:10:15,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-09 09:10:15,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 09:10:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:16,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:16,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:16,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114958224] [2021-11-09 09:10:16,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114958224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:10:16,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:10:16,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 09:10:16,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976735422] [2021-11-09 09:10:16,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:10:16,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:16,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:10:16,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:10:16,356 INFO L87 Difference]: Start difference. First operand 868 states and 1015 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:24,133 INFO L93 Difference]: Finished difference Result 867 states and 1014 transitions. [2021-11-09 09:10:24,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:10:24,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 09:10:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:24,138 INFO L225 Difference]: With dead ends: 867 [2021-11-09 09:10:24,138 INFO L226 Difference]: Without dead ends: 867 [2021-11-09 09:10:24,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:10:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-09 09:10:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2021-11-09 09:10:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 589 states have (on average 1.6825127334465195) internal successors, (991), 855 states have internal predecessors, (991), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 09:10:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1014 transitions. [2021-11-09 09:10:24,173 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1014 transitions. Word has length 69 [2021-11-09 09:10:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:24,173 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1014 transitions. [2021-11-09 09:10:24,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1014 transitions. [2021-11-09 09:10:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:10:24,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:24,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:24,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:24,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:24,390 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:10:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -582919641, now seen corresponding path program 1 times [2021-11-09 09:10:24,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:24,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658626159] [2021-11-09 09:10:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:24,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:24,392 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:24,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 09:10:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:24,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:10:24,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:25,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:25,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:25,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658626159] [2021-11-09 09:10:25,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658626159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:10:25,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:10:25,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:10:25,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050376520] [2021-11-09 09:10:25,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:10:25,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:10:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:10:25,326 INFO L87 Difference]: Start difference. First operand 867 states and 1014 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:25,459 INFO L93 Difference]: Finished difference Result 877 states and 1027 transitions. [2021-11-09 09:10:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:10:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-09 09:10:25,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:25,469 INFO L225 Difference]: With dead ends: 877 [2021-11-09 09:10:25,470 INFO L226 Difference]: Without dead ends: 877 [2021-11-09 09:10:25,473 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:10:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-11-09 09:10:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2021-11-09 09:10:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 597 states have (on average 1.6800670016750419) internal successors, (1003), 864 states have internal predecessors, (1003), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:10:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1027 transitions. [2021-11-09 09:10:25,498 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1027 transitions. Word has length 77 [2021-11-09 09:10:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:25,499 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1027 transitions. [2021-11-09 09:10:25,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1027 transitions. [2021-11-09 09:10:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:10:25,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:25,500 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:25,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:25,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:25,715 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:10:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:25,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1748666471, now seen corresponding path program 1 times [2021-11-09 09:10:25,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:25,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599728449] [2021-11-09 09:10:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:25,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:25,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:25,718 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:25,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 09:10:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:26,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:10:26,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:26,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:27,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:27,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599728449] [2021-11-09 09:10:27,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599728449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:10:27,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:27,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:10:27,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527428866] [2021-11-09 09:10:27,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:10:27,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:10:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:10:27,041 INFO L87 Difference]: Start difference. First operand 877 states and 1027 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:27,501 INFO L93 Difference]: Finished difference Result 891 states and 1045 transitions. [2021-11-09 09:10:27,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:10:27,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-09 09:10:27,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:27,508 INFO L225 Difference]: With dead ends: 891 [2021-11-09 09:10:27,508 INFO L226 Difference]: Without dead ends: 887 [2021-11-09 09:10:27,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:10:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-09 09:10:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 883. [2021-11-09 09:10:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 603 states have (on average 1.6766169154228856) internal successors, (1011), 870 states have internal predecessors, (1011), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:10:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1035 transitions. [2021-11-09 09:10:27,531 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1035 transitions. Word has length 79 [2021-11-09 09:10:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:27,532 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1035 transitions. [2021-11-09 09:10:27,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1035 transitions. [2021-11-09 09:10:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:10:27,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:27,534 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:27,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:27,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:27,750 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:10:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 198784231, now seen corresponding path program 2 times [2021-11-09 09:10:27,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:27,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216497596] [2021-11-09 09:10:27,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:10:27,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:27,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:27,753 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:27,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 09:10:28,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:10:28,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:10:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:10:28,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:29,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:29,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:29,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216497596] [2021-11-09 09:10:29,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216497596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:10:29,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:29,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 09:10:29,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622044411] [2021-11-09 09:10:29,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:10:29,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:10:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:10:29,585 INFO L87 Difference]: Start difference. First operand 883 states and 1035 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:31,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:31,415 INFO L93 Difference]: Finished difference Result 911 states and 1073 transitions. [2021-11-09 09:10:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:10:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-09 09:10:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:31,423 INFO L225 Difference]: With dead ends: 911 [2021-11-09 09:10:31,423 INFO L226 Difference]: Without dead ends: 907 [2021-11-09 09:10:31,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:10:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-09 09:10:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 895. [2021-11-09 09:10:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 615 states have (on average 1.6699186991869919) internal successors, (1027), 882 states have internal predecessors, (1027), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:10:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1051 transitions. [2021-11-09 09:10:31,449 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1051 transitions. Word has length 83 [2021-11-09 09:10:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:31,450 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1051 transitions. [2021-11-09 09:10:31,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1051 transitions. [2021-11-09 09:10:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:10:31,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:31,452 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:31,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:31,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:31,671 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:10:31,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1907871207, now seen corresponding path program 3 times [2021-11-09 09:10:31,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:31,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787539300] [2021-11-09 09:10:31,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:10:31,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:31,673 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:31,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 09:10:33,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 09:10:33,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:10:33,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 09:10:33,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:33,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:35,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:35,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787539300] [2021-11-09 09:10:35,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787539300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:10:35,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:35,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 09:10:35,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952441159] [2021-11-09 09:10:35,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 09:10:35,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 09:10:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:10:35,604 INFO L87 Difference]: Start difference. First operand 895 states and 1051 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:45,563 INFO L93 Difference]: Finished difference Result 951 states and 1135 transitions. [2021-11-09 09:10:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 09:10:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-09 09:10:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:45,571 INFO L225 Difference]: With dead ends: 951 [2021-11-09 09:10:45,571 INFO L226 Difference]: Without dead ends: 945 [2021-11-09 09:10:45,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 09:10:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-09 09:10:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 919. [2021-11-09 09:10:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 639 states have (on average 1.6557120500782472) internal successors, (1058), 906 states have internal predecessors, (1058), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:10:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1082 transitions. [2021-11-09 09:10:45,601 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1082 transitions. Word has length 91 [2021-11-09 09:10:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:45,602 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1082 transitions. [2021-11-09 09:10:45,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:10:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1082 transitions. [2021-11-09 09:10:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 09:10:45,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:45,604 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:45,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:45,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:45,818 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:10:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1870266343, now seen corresponding path program 4 times [2021-11-09 09:10:45,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:45,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196975704] [2021-11-09 09:10:45,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:10:45,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:45,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:45,820 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:45,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 09:10:46,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:10:46,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:10:46,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:10:46,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:48,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:10:53,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:53,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196975704] [2021-11-09 09:10:53,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196975704] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:10:53,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:53,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 09:10:53,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026898946] [2021-11-09 09:10:53,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 09:10:53,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 09:10:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:10:53,686 INFO L87 Difference]: Start difference. First operand 919 states and 1082 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:11:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:11,793 INFO L93 Difference]: Finished difference Result 1011 states and 1202 transitions. [2021-11-09 09:11:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 09:11:11,794 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-09 09:11:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:11,801 INFO L225 Difference]: With dead ends: 1011 [2021-11-09 09:11:11,802 INFO L226 Difference]: Without dead ends: 1007 [2021-11-09 09:11:11,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 09:11:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2021-11-09 09:11:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 949. [2021-11-09 09:11:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 669 states have (on average 1.6502242152466369) internal successors, (1104), 936 states have internal predecessors, (1104), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 09:11:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1128 transitions. [2021-11-09 09:11:11,842 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1128 transitions. Word has length 107 [2021-11-09 09:11:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:11,864 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1128 transitions. [2021-11-09 09:11:11,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:11:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1128 transitions. [2021-11-09 09:11:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 09:11:11,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:11,867 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:11,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:11:12,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:11:12,078 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-09 09:11:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:12,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1845795929, now seen corresponding path program 5 times [2021-11-09 09:11:12,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:11:12,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719151224] [2021-11-09 09:11:12,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:11:12,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:11:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:11:12,081 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:11:12,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a8004f0-8558-4685-8b33-7df294975a3f/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 09:11:14,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 09:11:14,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:11:14,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 09:11:14,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:11:14,360 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 [2021-11-09 09:11:14,687 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:11:14,688 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 20 treesize of output 27 [2021-11-09 09:11:14,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-09 09:11:14,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24