./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU --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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:46:43,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:46:43,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:46:43,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:46:43,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:46:43,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:46:43,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:46:43,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:46:43,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:46:43,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:46:43,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:46:43,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:46:43,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:46:43,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:46:43,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:46:43,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:46:43,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:46:43,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:46:43,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:46:43,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:46:43,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:46:43,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:46:43,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:46:43,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:46:43,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:46:43,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:46:43,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:46:43,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:46:43,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:46:43,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:46:43,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:46:43,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:46:43,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:46:43,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:46:43,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:46:43,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:46:43,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:46:43,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:46:43,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:46:43,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:46:43,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:46:43,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:46:43,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:46:43,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:46:43,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:46:43,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:46:43,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:46:43,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:46:43,933 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:46:43,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:46:43,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:46:43,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:46:43,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:46:43,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:46:43,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:46:43,936 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:46:43,936 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:46:43,936 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:46:43,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:46:43,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:46:43,937 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:46:43,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:46:43,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:46:43,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:46:43,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:46:43,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:46:43,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:46:43,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:46:43,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:46:43,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:46:43,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:46:43,940 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2021-11-02 22:46:44,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:46:44,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:46:44,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:46:44,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:46:44,279 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:46:44,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-02 22:46:44,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/24aaf8c64/ae1873300d3f4f63b90c7a79288d8ef1/FLAG45487aa23 [2021-11-02 22:46:44,965 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:46:44,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-02 22:46:44,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/24aaf8c64/ae1873300d3f4f63b90c7a79288d8ef1/FLAG45487aa23 [2021-11-02 22:46:45,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/24aaf8c64/ae1873300d3f4f63b90c7a79288d8ef1 [2021-11-02 22:46:45,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:46:45,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:46:45,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:45,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:46:45,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:46:45,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:45" (1/1) ... [2021-11-02 22:46:45,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51bed660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:45, skipping insertion in model container [2021-11-02 22:46:45,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:45" (1/1) ... [2021-11-02 22:46:45,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:46:45,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:46:45,730 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-02 22:46:45,841 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-02 22:46:45,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:45,868 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) [2021-11-02 22:46:45,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d3a3453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:45, skipping insertion in model container [2021-11-02 22:46:45,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:45,877 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:46:45,879 INFO L168 Benchmark]: Toolchain (without parser) took 642.50 ms. Allocated memory is still 130.0 MB. Free memory was 93.4 MB in the beginning and 94.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:45,880 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:46:45,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.39 ms. Allocated memory is still 130.0 MB. Free memory was 93.1 MB in the beginning and 94.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:45,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 639.39 ms. Allocated memory is still 130.0 MB. Free memory was 93.1 MB in the beginning and 94.8 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU --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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:46:48,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:46:48,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:46:48,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:46:48,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:46:48,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:46:48,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:46:48,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:46:48,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:46:48,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:46:48,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:46:48,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:46:48,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:46:48,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:46:48,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:46:48,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:46:48,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:46:48,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:46:48,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:46:48,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:46:48,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:46:48,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:46:48,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:46:48,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:46:48,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:46:48,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:46:48,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:46:48,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:46:48,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:46:48,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:46:48,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:46:48,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:46:48,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:46:48,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:46:48,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:46:48,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:46:48,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:46:48,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:46:48,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:46:48,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:46:48,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:46:48,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:46:48,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:46:48,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:46:48,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:46:48,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:46:48,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:46:48,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:46:48,356 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:46:48,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:46:48,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:46:48,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:46:48,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:46:48,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:46:48,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:46:48,358 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:46:48,359 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:46:48,359 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:46:48,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:46:48,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:46:48,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:46:48,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:46:48,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:46:48,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:46:48,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:46:48,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:46:48,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:46:48,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:46:48,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:46:48,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:46:48,362 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:46:48,362 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:46:48,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:46:48,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:46:48,363 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2021-11-02 22:46:48,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:46:48,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:46:48,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:46:48,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:46:48,772 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:46:48,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-02 22:46:48,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/ebfe69ab5/e48805980cf2482fa8fc4344db7642a2/FLAG7faf09f9a [2021-11-02 22:46:49,568 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:46:49,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-02 22:46:49,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/ebfe69ab5/e48805980cf2482fa8fc4344db7642a2/FLAG7faf09f9a [2021-11-02 22:46:49,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/data/ebfe69ab5/e48805980cf2482fa8fc4344db7642a2 [2021-11-02 22:46:49,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:46:49,745 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:46:49,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:49,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:46:49,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:46:49,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:49" (1/1) ... [2021-11-02 22:46:49,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdf0574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:49, skipping insertion in model container [2021-11-02 22:46:49,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:49" (1/1) ... [2021-11-02 22:46:49,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:46:49,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:46:50,323 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-02 22:46:50,474 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-02 22:46:50,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:50,541 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:46:50,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:46:50,590 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-02 22:46:50,715 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-02 22:46:50,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:50,755 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:46:50,794 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-02 22:46:50,873 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_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-02 22:46:50,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:50,955 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:46:50,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50 WrapperNode [2021-11-02 22:46:50,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:50,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:46:50,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:46:50,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:46:50,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:50,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:51,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:51,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:51,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:51,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:51,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:51,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:46:51,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:46:51,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:46:51,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:46:51,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (1/1) ... [2021-11-02 22:46:51,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:46:51,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:51,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:46:51,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:46:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:46:51,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:46:51,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:46:51,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:46:51,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:46:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:46:51,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:46:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:46:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:46:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:46:51,320 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:46:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:46:51,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:46:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:46:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:46:51,321 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:46:51,322 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:46:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:46:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:46:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:46:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:46:51,323 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:46:51,324 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:46:51,324 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:46:51,324 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:46:51,324 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:46:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:46:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:46:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:46:51,325 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:46:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:46:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:46:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:46:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:46:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:46:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:46:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:46:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:46:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:46:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:46:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:46:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:46:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:46:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:46:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:46:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:46:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:46:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:46:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:46:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:46:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:46:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:46:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:46:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:46:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:46:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:46:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:46:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:46:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:46:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:46:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:46:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:46:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:46:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:46:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:46:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:46:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:46:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:46:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:46:51,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:46:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:46:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:46:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:46:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:46:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:46:51,339 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:46:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:46:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:46:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:46:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:46:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:46:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:46:51,340 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:46:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:46:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:46:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:46:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:46:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:46:51,341 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:46:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:46:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:46:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:46:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:46:51,342 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:46:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:46:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:46:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:46:51,343 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:46:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:46:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:46:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:46:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:46:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:46:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:46:51,344 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:46:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:46:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:46:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:46:51,345 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:46:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:46:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:46:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:46:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:46:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:46:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:46:51,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:46:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:46:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:46:51,352 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:46:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:46:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:46:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:46:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:46:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:46:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:46:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:46:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:46:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:46:51,958 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:46:57,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:46:57,131 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-02 22:46:57,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:46:57 BoogieIcfgContainer [2021-11-02 22:46:57,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:46:57,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:46:57,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:46:57,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:46:57,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:46:49" (1/3) ... [2021-11-02 22:46:57,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfe5cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:46:57, skipping insertion in model container [2021-11-02 22:46:57,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:50" (2/3) ... [2021-11-02 22:46:57,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfe5cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:46:57, skipping insertion in model container [2021-11-02 22:46:57,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:46:57" (3/3) ... [2021-11-02 22:46:57,143 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2021-11-02 22:46:57,149 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:46:57,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2021-11-02 22:46:57,194 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:46:57,200 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 [2021-11-02 22:46:57,200 INFO L340 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2021-11-02 22:46:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 1279 states, 626 states have (on average 2.253993610223642) internal successors, (1411), 1267 states have internal predecessors, (1411), 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) [2021-11-02 22:46:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:46:57,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:57,249 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:46:57,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:46:57,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:57,255 INFO L85 PathProgramCache]: Analyzing trace with hash 806083998, now seen corresponding path program 1 times [2021-11-02 22:46:57,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:46:57,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706722327] [2021-11-02 22:46:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:57,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:46:57,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:46:57,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:46:57,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:46:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:57,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:46:57,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:57,587 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 [2021-11-02 22:46:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:57,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:46:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:46:57,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:46:57,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706722327] [2021-11-02 22:46:57,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706722327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:46:57,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:46:57,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:46:57,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406232757] [2021-11-02 22:46:57,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:46:57,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:46:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:46:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:46:57,722 INFO L87 Difference]: Start difference. First operand has 1279 states, 626 states have (on average 2.253993610223642) internal successors, (1411), 1267 states have internal predecessors, (1411), 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) [2021-11-02 22:47:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:00,411 INFO L93 Difference]: Finished difference Result 1451 states and 1536 transitions. [2021-11-02 22:47:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:47:00,417 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 [2021-11-02 22:47:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:00,441 INFO L225 Difference]: With dead ends: 1451 [2021-11-02 22:47:00,441 INFO L226 Difference]: Without dead ends: 1448 [2021-11-02 22:47:00,442 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 [2021-11-02 22:47:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-11-02 22:47:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1263. [2021-11-02 22:47:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 626 states have (on average 2.1070287539936103) internal successors, (1319), 1252 states have internal predecessors, (1319), 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) [2021-11-02 22:47:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1340 transitions. [2021-11-02 22:47:00,552 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1340 transitions. Word has length 7 [2021-11-02 22:47:00,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:00,553 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 1340 transitions. [2021-11-02 22:47:00,554 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) [2021-11-02 22:47:00,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1340 transitions. [2021-11-02 22:47:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:47:00,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:00,555 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:00,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-02 22:47:00,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:00,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:00,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash 806083999, now seen corresponding path program 1 times [2021-11-02 22:47:00,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:00,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034416660] [2021-11-02 22:47:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:00,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:00,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:00,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:47:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:00,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:47:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:01,025 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 [2021-11-02 22:47:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:01,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:01,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:01,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:01,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034416660] [2021-11-02 22:47:01,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034416660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:01,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:01,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:47:01,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417999359] [2021-11-02 22:47:01,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:01,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:01,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:01,145 INFO L87 Difference]: Start difference. First operand 1263 states and 1340 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) [2021-11-02 22:47:07,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:07,572 INFO L93 Difference]: Finished difference Result 1936 states and 2058 transitions. [2021-11-02 22:47:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:07,573 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 [2021-11-02 22:47:07,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:07,585 INFO L225 Difference]: With dead ends: 1936 [2021-11-02 22:47:07,585 INFO L226 Difference]: Without dead ends: 1936 [2021-11-02 22:47:07,586 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 [2021-11-02 22:47:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2021-11-02 22:47:07,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1298. [2021-11-02 22:47:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 670 states have (on average 2.0865671641791046) internal successors, (1398), 1287 states have internal predecessors, (1398), 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) [2021-11-02 22:47:07,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1419 transitions. [2021-11-02 22:47:07,633 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1419 transitions. Word has length 7 [2021-11-02 22:47:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:07,633 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1419 transitions. [2021-11-02 22:47:07,633 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) [2021-11-02 22:47:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1419 transitions. [2021-11-02 22:47:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:47:07,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:07,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:07,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:07,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:07,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1330049549, now seen corresponding path program 1 times [2021-11-02 22:47:07,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:07,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700218010] [2021-11-02 22:47:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:07,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:07,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:07,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:47:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:08,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:47:08,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:08,119 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 [2021-11-02 22:47:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:08,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:08,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:08,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700218010] [2021-11-02 22:47:08,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700218010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:08,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:08,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:47:08,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009607849] [2021-11-02 22:47:08,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:47:08,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:47:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:47:08,200 INFO L87 Difference]: Start difference. First operand 1298 states and 1419 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) [2021-11-02 22:47:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:10,611 INFO L93 Difference]: Finished difference Result 1626 states and 1772 transitions. [2021-11-02 22:47:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:47:10,616 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 [2021-11-02 22:47:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:10,627 INFO L225 Difference]: With dead ends: 1626 [2021-11-02 22:47:10,627 INFO L226 Difference]: Without dead ends: 1626 [2021-11-02 22:47:10,627 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 [2021-11-02 22:47:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-11-02 22:47:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1249. [2021-11-02 22:47:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 670 states have (on average 2.008955223880597) internal successors, (1346), 1238 states have internal predecessors, (1346), 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) [2021-11-02 22:47:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1367 transitions. [2021-11-02 22:47:10,666 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1367 transitions. Word has length 12 [2021-11-02 22:47:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:10,667 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1367 transitions. [2021-11-02 22:47:10,667 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) [2021-11-02 22:47:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1367 transitions. [2021-11-02 22:47:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:47:10,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:10,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:10,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:10,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:10,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1330049550, now seen corresponding path program 1 times [2021-11-02 22:47:10,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:10,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934369316] [2021-11-02 22:47:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:10,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:10,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:10,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:10,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:47:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:11,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:47:11,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:11,075 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 [2021-11-02 22:47:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:11,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:11,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:11,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934369316] [2021-11-02 22:47:11,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934369316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:11,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:11,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:47:11,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887463759] [2021-11-02 22:47:11,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:11,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:11,219 INFO L87 Difference]: Start difference. First operand 1249 states and 1367 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) [2021-11-02 22:47:16,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:16,541 INFO L93 Difference]: Finished difference Result 1669 states and 1779 transitions. [2021-11-02 22:47:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:16,542 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 [2021-11-02 22:47:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:16,551 INFO L225 Difference]: With dead ends: 1669 [2021-11-02 22:47:16,551 INFO L226 Difference]: Without dead ends: 1669 [2021-11-02 22:47:16,552 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 [2021-11-02 22:47:16,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2021-11-02 22:47:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1239. [2021-11-02 22:47:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 670 states have (on average 1.98955223880597) internal successors, (1333), 1228 states have internal predecessors, (1333), 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) [2021-11-02 22:47:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1354 transitions. [2021-11-02 22:47:16,586 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1354 transitions. Word has length 12 [2021-11-02 22:47:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:16,586 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1354 transitions. [2021-11-02 22:47:16,586 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) [2021-11-02 22:47:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1354 transitions. [2021-11-02 22:47:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:47:16,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:16,587 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:16,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-02 22:47:16,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:16,803 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:16,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1636070505, now seen corresponding path program 1 times [2021-11-02 22:47:16,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:16,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074793264] [2021-11-02 22:47:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:16,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:16,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:16,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:47:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:17,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:47:17,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:17,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:17,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:17,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074793264] [2021-11-02 22:47:17,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074793264] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:17,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:17,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:47:17,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985829071] [2021-11-02 22:47:17,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:17,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:17,229 INFO L87 Difference]: Start difference. First operand 1239 states and 1354 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-02 22:47:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:18,232 INFO L93 Difference]: Finished difference Result 1881 states and 2038 transitions. [2021-11-02 22:47:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:47:18,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 15 [2021-11-02 22:47:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:18,244 INFO L225 Difference]: With dead ends: 1881 [2021-11-02 22:47:18,244 INFO L226 Difference]: Without dead ends: 1881 [2021-11-02 22:47:18,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:47:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2021-11-02 22:47:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1479. [2021-11-02 22:47:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 910 states have (on average 1.9637362637362636) internal successors, (1787), 1468 states have internal predecessors, (1787), 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) [2021-11-02 22:47:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1808 transitions. [2021-11-02 22:47:18,288 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1808 transitions. Word has length 15 [2021-11-02 22:47:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:18,289 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1808 transitions. [2021-11-02 22:47:18,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-02 22:47:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1808 transitions. [2021-11-02 22:47:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:47:18,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:18,290 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:18,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:18,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:18,504 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -271696847, now seen corresponding path program 1 times [2021-11-02 22:47:18,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:18,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430305026] [2021-11-02 22:47:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:18,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:18,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:18,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:47:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:18,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:47:18,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:18,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:18,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:18,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430305026] [2021-11-02 22:47:18,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430305026] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:18,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:18,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:47:18,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010097507] [2021-11-02 22:47:18,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:18,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:18,869 INFO L87 Difference]: Start difference. First operand 1479 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-02 22:47:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:18,897 INFO L93 Difference]: Finished difference Result 1649 states and 1966 transitions. [2021-11-02 22:47:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:47:18,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 17 [2021-11-02 22:47:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:18,906 INFO L225 Difference]: With dead ends: 1649 [2021-11-02 22:47:18,906 INFO L226 Difference]: Without dead ends: 1649 [2021-11-02 22:47:18,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-11-02 22:47:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1419. [2021-11-02 22:47:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 874 states have (on average 1.9462242562929062) internal successors, (1701), 1408 states have internal predecessors, (1701), 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) [2021-11-02 22:47:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1722 transitions. [2021-11-02 22:47:18,940 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1722 transitions. Word has length 17 [2021-11-02 22:47:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:18,941 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 1722 transitions. [2021-11-02 22:47:18,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-02 22:47:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1722 transitions. [2021-11-02 22:47:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-02 22:47:18,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:18,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:18,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:19,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:19,155 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr364REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:19,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash 892362763, now seen corresponding path program 1 times [2021-11-02 22:47:19,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:19,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403348926] [2021-11-02 22:47:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:19,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:19,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:19,157 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:19,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:47:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:19,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:47:19,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:19,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:19,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:19,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403348926] [2021-11-02 22:47:19,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403348926] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:19,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:19,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:47:19,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581417870] [2021-11-02 22:47:19,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:47:19,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:47:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:47:19,525 INFO L87 Difference]: Start difference. First operand 1419 states and 1722 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-02 22:47:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:19,617 INFO L93 Difference]: Finished difference Result 1621 states and 1910 transitions. [2021-11-02 22:47:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2021-11-02 22:47:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:19,629 INFO L225 Difference]: With dead ends: 1621 [2021-11-02 22:47:19,629 INFO L226 Difference]: Without dead ends: 1621 [2021-11-02 22:47:19,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:47:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-11-02 22:47:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1389. [2021-11-02 22:47:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 858 states have (on average 1.9149184149184149) internal successors, (1643), 1378 states have internal predecessors, (1643), 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) [2021-11-02 22:47:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1664 transitions. [2021-11-02 22:47:19,663 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1664 transitions. Word has length 19 [2021-11-02 22:47:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:19,664 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 1664 transitions. [2021-11-02 22:47:19,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-11-02 22:47:19,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1664 transitions. [2021-11-02 22:47:19,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 22:47:19,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:19,665 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] [2021-11-02 22:47:19,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:19,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:19,877 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr637ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1468583665, now seen corresponding path program 1 times [2021-11-02 22:47:19,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:19,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383255565] [2021-11-02 22:47:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:19,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:19,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:19,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:47:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:20,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:47:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:20,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:47:20,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:47:20,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:47:20,211 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-02 22:47:20,212 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 [2021-11-02 22:47:20,297 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-02 22:47:20,297 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 [2021-11-02 22:47:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:20,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:20,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:20,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383255565] [2021-11-02 22:47:20,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383255565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:20,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:20,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:47:20,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563521707] [2021-11-02 22:47:20,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:47:20,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:20,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:47:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:47:20,446 INFO L87 Difference]: Start difference. First operand 1389 states and 1664 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-11-02 22:47:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:22,632 INFO L93 Difference]: Finished difference Result 1832 states and 2168 transitions. [2021-11-02 22:47:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:22,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2021-11-02 22:47:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:22,641 INFO L225 Difference]: With dead ends: 1832 [2021-11-02 22:47:22,641 INFO L226 Difference]: Without dead ends: 1832 [2021-11-02 22:47:22,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:47:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-11-02 22:47:22,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1388. [2021-11-02 22:47:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 857 states have (on average 1.9148191365227538) internal successors, (1641), 1377 states have internal predecessors, (1641), 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) [2021-11-02 22:47:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1662 transitions. [2021-11-02 22:47:22,674 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1662 transitions. Word has length 20 [2021-11-02 22:47:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:22,674 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 1662 transitions. [2021-11-02 22:47:22,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-11-02 22:47:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1662 transitions. [2021-11-02 22:47:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:47:22,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:22,675 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] [2021-11-02 22:47:22,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:22,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:22,889 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash 833916409, now seen corresponding path program 1 times [2021-11-02 22:47:22,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:22,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317876575] [2021-11-02 22:47:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:22,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:22,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:22,891 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:22,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:47:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:23,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:47:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:23,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:23,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:23,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317876575] [2021-11-02 22:47:23,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317876575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:23,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:23,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:47:23,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606101997] [2021-11-02 22:47:23,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:23,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:23,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:23,250 INFO L87 Difference]: Start difference. First operand 1388 states and 1662 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) [2021-11-02 22:47:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:23,280 INFO L93 Difference]: Finished difference Result 1328 states and 1576 transitions. [2021-11-02 22:47:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:47:23,281 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 [2021-11-02 22:47:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:23,289 INFO L225 Difference]: With dead ends: 1328 [2021-11-02 22:47:23,289 INFO L226 Difference]: Without dead ends: 1328 [2021-11-02 22:47:23,289 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 [2021-11-02 22:47:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-11-02 22:47:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1328. [2021-11-02 22:47:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 821 states have (on average 1.8940316686967114) internal successors, (1555), 1317 states have internal predecessors, (1555), 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) [2021-11-02 22:47:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1576 transitions. [2021-11-02 22:47:23,321 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1576 transitions. Word has length 22 [2021-11-02 22:47:23,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:23,321 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1576 transitions. [2021-11-02 22:47:23,322 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) [2021-11-02 22:47:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1576 transitions. [2021-11-02 22:47:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:47:23,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:23,324 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] [2021-11-02 22:47:23,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:23,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:23,537 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:23,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1765216397, now seen corresponding path program 1 times [2021-11-02 22:47:23,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:23,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045795218] [2021-11-02 22:47:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:23,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:23,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:23,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:47:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:23,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:47:23,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:23,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:23,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:23,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045795218] [2021-11-02 22:47:23,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045795218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:23,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:23,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:47:23,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044344822] [2021-11-02 22:47:23,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:47:23,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:47:23,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:47:23,943 INFO L87 Difference]: Start difference. First operand 1328 states and 1576 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) [2021-11-02 22:47:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:24,007 INFO L93 Difference]: Finished difference Result 1300 states and 1520 transitions. [2021-11-02 22:47:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:24,008 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 [2021-11-02 22:47:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:24,013 INFO L225 Difference]: With dead ends: 1300 [2021-11-02 22:47:24,013 INFO L226 Difference]: Without dead ends: 1300 [2021-11-02 22:47:24,014 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 [2021-11-02 22:47:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-02 22:47:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1298. [2021-11-02 22:47:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 805 states have (on average 1.8596273291925465) internal successors, (1497), 1287 states have internal predecessors, (1497), 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) [2021-11-02 22:47:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1518 transitions. [2021-11-02 22:47:24,039 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1518 transitions. Word has length 24 [2021-11-02 22:47:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:24,040 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1518 transitions. [2021-11-02 22:47:24,040 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) [2021-11-02 22:47:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1518 transitions. [2021-11-02 22:47:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:47:24,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:24,042 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] [2021-11-02 22:47:24,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:24,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:24,254 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1075877825, now seen corresponding path program 1 times [2021-11-02 22:47:24,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:24,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127073367] [2021-11-02 22:47:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:24,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:24,257 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:24,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:47:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:24,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:47:24,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:24,552 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 [2021-11-02 22:47:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:24,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:24,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:24,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127073367] [2021-11-02 22:47:24,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127073367] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:24,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:24,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:47:24,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379582] [2021-11-02 22:47:24,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:24,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:24,796 INFO L87 Difference]: Start difference. First operand 1298 states and 1518 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) [2021-11-02 22:47:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:27,502 INFO L93 Difference]: Finished difference Result 1888 states and 2232 transitions. [2021-11-02 22:47:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:47:27,503 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 [2021-11-02 22:47:27,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:27,513 INFO L225 Difference]: With dead ends: 1888 [2021-11-02 22:47:27,513 INFO L226 Difference]: Without dead ends: 1888 [2021-11-02 22:47:27,514 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 [2021-11-02 22:47:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-11-02 22:47:27,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1294. [2021-11-02 22:47:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 805 states have (on average 1.8496894409937887) internal successors, (1489), 1283 states have internal predecessors, (1489), 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) [2021-11-02 22:47:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1510 transitions. [2021-11-02 22:47:27,545 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1510 transitions. Word has length 38 [2021-11-02 22:47:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:27,545 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 1510 transitions. [2021-11-02 22:47:27,545 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) [2021-11-02 22:47:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1510 transitions. [2021-11-02 22:47:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:47:27,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:27,549 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] [2021-11-02 22:47:27,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:27,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:27,762 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1075877826, now seen corresponding path program 1 times [2021-11-02 22:47:27,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:27,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323339645] [2021-11-02 22:47:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:27,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:27,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:27,765 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:27,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:47:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:28,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:47:28,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:28,106 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 [2021-11-02 22:47:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:28,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:28,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:28,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323339645] [2021-11-02 22:47:28,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323339645] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:28,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:28,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:47:28,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627089792] [2021-11-02 22:47:28,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:47:28,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:47:28,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:47:28,922 INFO L87 Difference]: Start difference. First operand 1294 states and 1510 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) [2021-11-02 22:47:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:36,205 INFO L93 Difference]: Finished difference Result 2013 states and 2334 transitions. [2021-11-02 22:47:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:47:36,206 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 [2021-11-02 22:47:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:36,214 INFO L225 Difference]: With dead ends: 2013 [2021-11-02 22:47:36,214 INFO L226 Difference]: Without dead ends: 2013 [2021-11-02 22:47:36,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:47:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-11-02 22:47:36,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1290. [2021-11-02 22:47:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 805 states have (on average 1.839751552795031) internal successors, (1481), 1279 states have internal predecessors, (1481), 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) [2021-11-02 22:47:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1502 transitions. [2021-11-02 22:47:36,240 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1502 transitions. Word has length 38 [2021-11-02 22:47:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:36,241 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1502 transitions. [2021-11-02 22:47:36,241 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) [2021-11-02 22:47:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1502 transitions. [2021-11-02 22:47:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:47:36,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:36,243 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] [2021-11-02 22:47:36,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:36,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:36,457 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1047493696, now seen corresponding path program 1 times [2021-11-02 22:47:36,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:36,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447168436] [2021-11-02 22:47:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:36,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:36,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:36,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:36,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:47:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:36,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:47:36,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:37,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:37,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:37,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447168436] [2021-11-02 22:47:37,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447168436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:37,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:37,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:47:37,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751946402] [2021-11-02 22:47:37,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:37,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:37,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:37,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:37,240 INFO L87 Difference]: Start difference. First operand 1290 states and 1502 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-02 22:47:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:37,294 INFO L93 Difference]: Finished difference Result 1278 states and 1482 transitions. [2021-11-02 22:47:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:37,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 56 [2021-11-02 22:47:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:37,302 INFO L225 Difference]: With dead ends: 1278 [2021-11-02 22:47:37,302 INFO L226 Difference]: Without dead ends: 1278 [2021-11-02 22:47:37,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:47:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-02 22:47:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1278. [2021-11-02 22:47:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 793 states have (on average 1.8423707440100883) internal successors, (1461), 1267 states have internal predecessors, (1461), 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) [2021-11-02 22:47:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1482 transitions. [2021-11-02 22:47:37,327 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1482 transitions. Word has length 56 [2021-11-02 22:47:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:37,328 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1482 transitions. [2021-11-02 22:47:37,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-02 22:47:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1482 transitions. [2021-11-02 22:47:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:47:37,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:37,330 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] [2021-11-02 22:47:37,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:37,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:47:37,546 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:47:37,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1905952116, now seen corresponding path program 1 times [2021-11-02 22:47:37,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:47:37,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760937233] [2021-11-02 22:47:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:37,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:47:37,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:47:37,549 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:47:37,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:47:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:38,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:47:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:38,115 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 [2021-11-02 22:47:38,120 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 [2021-11-02 22:47:38,906 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:47:38,907 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 25 treesize of output 27 [2021-11-02 22:47:38,923 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:47:38,924 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 24 treesize of output 20 [2021-11-02 22:47:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:38,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:47:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:43,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:47:43,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760937233] [2021-11-02 22:47:43,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760937233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:43,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:43,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:47:43,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130340075] [2021-11-02 22:47:43,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:47:43,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:47:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:47:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:47:43,956 INFO L87 Difference]: Start difference. First operand 1278 states and 1482 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) [2021-11-02 22:48:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:02,104 INFO L93 Difference]: Finished difference Result 2073 states and 2523 transitions. [2021-11-02 22:48:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:48:02,107 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 [2021-11-02 22:48:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:02,115 INFO L225 Difference]: With dead ends: 2073 [2021-11-02 22:48:02,115 INFO L226 Difference]: Without dead ends: 2073 [2021-11-02 22:48:02,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 22:48:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-11-02 22:48:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1240. [2021-11-02 22:48:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 793 states have (on average 1.794451450189155) internal successors, (1423), 1229 states have internal predecessors, (1423), 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) [2021-11-02 22:48:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1444 transitions. [2021-11-02 22:48:02,138 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1444 transitions. Word has length 64 [2021-11-02 22:48:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:02,138 INFO L470 AbstractCegarLoop]: Abstraction has 1240 states and 1444 transitions. [2021-11-02 22:48:02,138 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) [2021-11-02 22:48:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1444 transitions. [2021-11-02 22:48:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:48:02,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:02,140 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] [2021-11-02 22:48:02,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-02 22:48:02,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:48:02,368 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:48:02,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash -655072709, now seen corresponding path program 1 times [2021-11-02 22:48:02,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:48:02,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719062277] [2021-11-02 22:48:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:02,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:48:02,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:48:02,371 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:48:02,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:48:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:02,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:48:02,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:02,979 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 [2021-11-02 22:48:02,992 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 [2021-11-02 22:48:03,041 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 [2021-11-02 22:48:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:03,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:48:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:03,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:48:03,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719062277] [2021-11-02 22:48:03,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719062277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:03,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:03,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:48:03,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117998298] [2021-11-02 22:48:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:48:03,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:48:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:48:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:48:03,222 INFO L87 Difference]: Start difference. First operand 1240 states and 1444 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) [2021-11-02 22:48:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:06,952 INFO L93 Difference]: Finished difference Result 1239 states and 1443 transitions. [2021-11-02 22:48:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:48:06,956 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 [2021-11-02 22:48:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:06,964 INFO L225 Difference]: With dead ends: 1239 [2021-11-02 22:48:06,964 INFO L226 Difference]: Without dead ends: 1239 [2021-11-02 22:48:06,965 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:48:06,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-02 22:48:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2021-11-02 22:48:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 793 states have (on average 1.7931904161412358) internal successors, (1422), 1228 states have internal predecessors, (1422), 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) [2021-11-02 22:48:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1443 transitions. [2021-11-02 22:48:06,987 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1443 transitions. Word has length 69 [2021-11-02 22:48:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:06,988 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1443 transitions. [2021-11-02 22:48:06,988 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) [2021-11-02 22:48:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1443 transitions. [2021-11-02 22:48:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:48:06,989 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:06,989 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] [2021-11-02 22:48:07,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:07,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:48:07,205 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:48:07,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash -655072708, now seen corresponding path program 1 times [2021-11-02 22:48:07,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:48:07,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516471272] [2021-11-02 22:48:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:07,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:48:07,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:48:07,207 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:48:07,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:48:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:07,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:48:07,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:07,842 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 [2021-11-02 22:48:07,869 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 [2021-11-02 22:48:07,884 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 [2021-11-02 22:48:07,969 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 [2021-11-02 22:48:07,973 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 [2021-11-02 22:48:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:08,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:48:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:08,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:48:08,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516471272] [2021-11-02 22:48:08,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516471272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:08,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:08,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:48:08,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372482604] [2021-11-02 22:48:08,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:48:08,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:48:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:48:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:48:08,360 INFO L87 Difference]: Start difference. First operand 1239 states and 1443 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) [2021-11-02 22:48:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:20,587 INFO L93 Difference]: Finished difference Result 1238 states and 1442 transitions. [2021-11-02 22:48:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:48:20,588 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 [2021-11-02 22:48:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:20,596 INFO L225 Difference]: With dead ends: 1238 [2021-11-02 22:48:20,597 INFO L226 Difference]: Without dead ends: 1238 [2021-11-02 22:48:20,597 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 [2021-11-02 22:48:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-11-02 22:48:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1238. [2021-11-02 22:48:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 792 states have (on average 1.7941919191919191) internal successors, (1421), 1227 states have internal predecessors, (1421), 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) [2021-11-02 22:48:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1442 transitions. [2021-11-02 22:48:20,621 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1442 transitions. Word has length 69 [2021-11-02 22:48:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:20,622 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1442 transitions. [2021-11-02 22:48:20,622 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) [2021-11-02 22:48:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1442 transitions. [2021-11-02 22:48:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:48:20,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:20,623 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] [2021-11-02 22:48:20,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:20,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:48:20,840 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:48:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1548642594, now seen corresponding path program 1 times [2021-11-02 22:48:20,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:48:20,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962356335] [2021-11-02 22:48:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:20,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:48:20,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:48:20,843 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:48:20,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:48:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:21,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:48:21,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:21,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:48:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:21,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:48:21,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962356335] [2021-11-02 22:48:21,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962356335] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:48:21,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:48:21,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:48:21,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719287366] [2021-11-02 22:48:21,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:48:21,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:48:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:48:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:48:21,860 INFO L87 Difference]: Start difference. First operand 1238 states and 1442 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) [2021-11-02 22:48:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:22,013 INFO L93 Difference]: Finished difference Result 1248 states and 1455 transitions. [2021-11-02 22:48:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:48:22,014 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 [2021-11-02 22:48:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:22,022 INFO L225 Difference]: With dead ends: 1248 [2021-11-02 22:48:22,022 INFO L226 Difference]: Without dead ends: 1248 [2021-11-02 22:48:22,023 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 [2021-11-02 22:48:22,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-02 22:48:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-11-02 22:48:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 800 states have (on average 1.79125) internal successors, (1433), 1236 states have internal predecessors, (1433), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-02 22:48:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1455 transitions. [2021-11-02 22:48:22,051 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1455 transitions. Word has length 77 [2021-11-02 22:48:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:22,051 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1455 transitions. [2021-11-02 22:48:22,052 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) [2021-11-02 22:48:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1455 transitions. [2021-11-02 22:48:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:48:22,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:22,053 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] [2021-11-02 22:48:22,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:22,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:48:22,270 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:48:22,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:22,271 INFO L85 PathProgramCache]: Analyzing trace with hash 107741602, now seen corresponding path program 1 times [2021-11-02 22:48:22,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:48:22,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783980422] [2021-11-02 22:48:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:22,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:48:22,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:48:22,274 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:48:22,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:48:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:22,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:48:22,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:23,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:48:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:23,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:48:23,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783980422] [2021-11-02 22:48:23,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783980422] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:48:23,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:23,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:48:23,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682108339] [2021-11-02 22:48:23,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:48:23,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:48:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:48:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:48:23,492 INFO L87 Difference]: Start difference. First operand 1248 states and 1455 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) [2021-11-02 22:48:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:23,970 INFO L93 Difference]: Finished difference Result 1262 states and 1473 transitions. [2021-11-02 22:48:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:48:23,971 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 [2021-11-02 22:48:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:23,977 INFO L225 Difference]: With dead ends: 1262 [2021-11-02 22:48:23,978 INFO L226 Difference]: Without dead ends: 1258 [2021-11-02 22:48:23,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:48:23,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2021-11-02 22:48:24,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1254. [2021-11-02 22:48:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 806 states have (on average 1.7878411910669976) internal successors, (1441), 1242 states have internal predecessors, (1441), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-02 22:48:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1463 transitions. [2021-11-02 22:48:24,012 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1463 transitions. Word has length 79 [2021-11-02 22:48:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:24,012 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1463 transitions. [2021-11-02 22:48:24,013 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) [2021-11-02 22:48:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1463 transitions. [2021-11-02 22:48:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:48:24,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:24,014 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] [2021-11-02 22:48:24,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:24,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:48:24,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:48:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:24,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1478677154, now seen corresponding path program 2 times [2021-11-02 22:48:24,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:48:24,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130677128] [2021-11-02 22:48:24,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:48:24,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:48:24,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:48:24,232 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:48:24,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:48:25,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:48:25,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:25,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:48:25,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:25,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:48:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:26,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:48:26,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130677128] [2021-11-02 22:48:26,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130677128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:48:26,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:26,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:48:26,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304368934] [2021-11-02 22:48:26,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:48:26,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:48:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:48:26,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:48:26,054 INFO L87 Difference]: Start difference. First operand 1254 states and 1463 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) [2021-11-02 22:48:27,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:27,824 INFO L93 Difference]: Finished difference Result 1282 states and 1501 transitions. [2021-11-02 22:48:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:48:27,825 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 [2021-11-02 22:48:27,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:27,830 INFO L225 Difference]: With dead ends: 1282 [2021-11-02 22:48:27,830 INFO L226 Difference]: Without dead ends: 1278 [2021-11-02 22:48:27,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:48:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-02 22:48:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1266. [2021-11-02 22:48:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 818 states have (on average 1.7811735941320292) internal successors, (1457), 1254 states have internal predecessors, (1457), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-02 22:48:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1479 transitions. [2021-11-02 22:48:27,860 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1479 transitions. Word has length 83 [2021-11-02 22:48:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:27,860 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 1479 transitions. [2021-11-02 22:48:27,860 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) [2021-11-02 22:48:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1479 transitions. [2021-11-02 22:48:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:48:27,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:27,862 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] [2021-11-02 22:48:27,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:28,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:48:28,075 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:48:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2053043362, now seen corresponding path program 3 times [2021-11-02 22:48:28,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:48:28,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064424270] [2021-11-02 22:48:28,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:48:28,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:48:28,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:48:28,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:48:28,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-02 22:48:29,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:48:29,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:29,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:48:29,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:29,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:48:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:31,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:48:31,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064424270] [2021-11-02 22:48:31,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064424270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:48:31,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:31,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:48:31,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661505278] [2021-11-02 22:48:31,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:48:31,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:48:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:48:31,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:48:31,331 INFO L87 Difference]: Start difference. First operand 1266 states and 1479 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) [2021-11-02 22:48:38,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:38,540 INFO L93 Difference]: Finished difference Result 1322 states and 1557 transitions. [2021-11-02 22:48:38,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:48:38,542 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 [2021-11-02 22:48:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:38,547 INFO L225 Difference]: With dead ends: 1322 [2021-11-02 22:48:38,547 INFO L226 Difference]: Without dead ends: 1318 [2021-11-02 22:48:38,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:48:38,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-11-02 22:48:38,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1290. [2021-11-02 22:48:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 842 states have (on average 1.7684085510688836) internal successors, (1489), 1278 states have internal predecessors, (1489), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-02 22:48:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1511 transitions. [2021-11-02 22:48:38,573 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1511 transitions. Word has length 91 [2021-11-02 22:48:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:38,573 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1511 transitions. [2021-11-02 22:48:38,573 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) [2021-11-02 22:48:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1511 transitions. [2021-11-02 22:48:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 22:48:38,575 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:38,575 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] [2021-11-02 22:48:38,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:48:38,788 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:48:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1896954018, now seen corresponding path program 4 times [2021-11-02 22:48:38,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:48:38,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898575748] [2021-11-02 22:48:38,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:48:38,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:48:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:48:38,790 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:48:38,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-02 22:48:39,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:48:39,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:39,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:48:39,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:40,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:48:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:45,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:48:45,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898575748] [2021-11-02 22:48:45,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898575748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:48:45,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:45,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:48:45,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074326844] [2021-11-02 22:48:45,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:48:45,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:48:45,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:48:45,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:48:45,034 INFO L87 Difference]: Start difference. First operand 1290 states and 1511 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) [2021-11-02 22:49:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:00,674 INFO L93 Difference]: Finished difference Result 1384 states and 1633 transitions. [2021-11-02 22:49:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:49:00,676 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 [2021-11-02 22:49:00,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:00,681 INFO L225 Difference]: With dead ends: 1384 [2021-11-02 22:49:00,682 INFO L226 Difference]: Without dead ends: 1380 [2021-11-02 22:49:00,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:49:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2021-11-02 22:49:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1320. [2021-11-02 22:49:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 872 states have (on average 1.760321100917431) internal successors, (1535), 1308 states have internal predecessors, (1535), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-02 22:49:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1557 transitions. [2021-11-02 22:49:00,719 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1557 transitions. Word has length 107 [2021-11-02 22:49:00,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:00,719 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1557 transitions. [2021-11-02 22:49:00,719 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) [2021-11-02 22:49:00,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1557 transitions. [2021-11-02 22:49:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:49:00,721 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:00,721 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] [2021-11-02 22:49:00,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:00,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:49:00,939 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-02 22:49:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:00,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1816175650, now seen corresponding path program 5 times [2021-11-02 22:49:00,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:49:00,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329044831] [2021-11-02 22:49:00,940 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:49:00,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:49:00,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:49:00,942 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:49:00,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-02 22:49:02,647 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:49:02,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:49:02,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:49:02,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:02,700 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 [2021-11-02 22:49:02,954 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:49:02,954 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 25 treesize of output 32 [2021-11-02 22:49:03,004 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 [2021-11-02 22:49:03,172 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 [2021-11-02 22:58:02,677 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-02 22:58:02,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:58:02,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329044831] [2021-11-02 22:58:02,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-02 22:58:02,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1600682611] [2021-11-02 22:58:02,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:58:02,679 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-02 22:58:02,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/cvc4 [2021-11-02 22:58:02,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-02 22:58:02,680 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-02 22:58:02,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-02 22:59:10,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:59:10,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:10,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-02 22:59:10,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:10,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-02 22:59:10,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639827242] [2021-11-02 22:59:10,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:59:10,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:10,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:10,852 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:10,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08fa652-72fd-494b-8ccb-5aa35e94d3ed/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process