./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:51:38,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:51:38,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:51:38,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:51:38,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:51:38,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:51:38,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:51:38,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:51:38,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:51:38,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:51:38,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:51:38,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:51:38,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:51:38,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:51:38,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:51:38,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:51:38,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:51:38,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:51:38,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:51:38,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:51:38,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:51:38,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:51:38,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:51:38,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:51:38,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:51:38,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:51:38,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:51:38,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:51:38,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:51:38,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:51:38,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:51:38,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:51:38,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:51:38,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:51:38,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:51:38,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:51:38,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:51:38,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:51:38,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:51:38,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:51:38,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:51:38,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:51:38,993 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:51:38,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:51:38,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:51:38,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:51:38,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:51:38,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:51:38,997 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:51:38,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:51:38,997 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:51:38,998 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:51:38,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:51:38,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:51:38,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:51:38,999 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:51:38,999 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:51:38,999 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:51:39,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:51:39,000 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:51:39,000 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:51:39,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:51:39,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:51:39,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:51:39,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:51:39,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:51:39,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:51:39,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:51:39,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:51:39,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:51:39,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:51:39,004 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2021-11-02 22:51:39,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:51:39,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:51:39,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:51:39,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:51:39,385 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:51:39,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-02 22:51:39,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/59b24b702/7ea33f3681aa48058304c6cd9134b31b/FLAG404d7cee0 [2021-11-02 22:51:40,323 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:51:40,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-02 22:51:40,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/59b24b702/7ea33f3681aa48058304c6cd9134b31b/FLAG404d7cee0 [2021-11-02 22:51:40,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/59b24b702/7ea33f3681aa48058304c6cd9134b31b [2021-11-02 22:51:40,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:51:40,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:51:40,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:51:40,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:51:40,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:51:40,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:51:40" (1/1) ... [2021-11-02 22:51:40,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8def7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:40, skipping insertion in model container [2021-11-02 22:51:40,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:51:40" (1/1) ... [2021-11-02 22:51:40,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:51:40,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:51:41,175 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-02 22:51:41,342 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-02 22:51:41,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:51:41,379 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 22:51:41,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4855d912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:41, skipping insertion in model container [2021-11-02 22:51:41,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:51:41,383 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:51:41,386 INFO L168 Benchmark]: Toolchain (without parser) took 902.57 ms. Allocated memory is still 104.9 MB. Free memory was 73.3 MB in the beginning and 70.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:51:41,387 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:51:41,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 899.24 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 70.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:51:41,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 104.9 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 899.24 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 70.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:51:44,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:51:44,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:51:44,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:51:44,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:51:44,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:51:44,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:51:44,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:51:44,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:51:44,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:51:44,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:51:44,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:51:44,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:51:44,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:51:44,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:51:44,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:51:44,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:51:44,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:51:44,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:51:44,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:51:44,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:51:44,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:51:44,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:51:44,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:51:44,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:51:44,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:51:44,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:51:44,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:51:44,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:51:44,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:51:44,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:51:44,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:51:44,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:51:44,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:51:44,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:51:44,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:51:44,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:51:44,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:51:44,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:51:44,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:51:44,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:51:44,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:51:44,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:51:44,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:51:44,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:51:44,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:51:44,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:51:44,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:51:44,383 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:51:44,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:51:44,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:51:44,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:51:44,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:51:44,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:51:44,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:51:44,385 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:51:44,385 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:51:44,386 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:51:44,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:51:44,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:51:44,386 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:51:44,387 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:51:44,387 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:51:44,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:51:44,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:51:44,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:51:44,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:51:44,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:51:44,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:51:44,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:51:44,389 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:51:44,389 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:51:44,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:51:44,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:51:44,390 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2021-11-02 22:51:44,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:51:44,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:51:44,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:51:44,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:51:44,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:51:44,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-02 22:51:45,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/97a5f96e0/c95339d6ec964193b033f87882d3594e/FLAG7b4cecc11 [2021-11-02 22:51:45,785 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:51:45,787 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2021-11-02 22:51:45,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/97a5f96e0/c95339d6ec964193b033f87882d3594e/FLAG7b4cecc11 [2021-11-02 22:51:45,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/data/97a5f96e0/c95339d6ec964193b033f87882d3594e [2021-11-02 22:51:45,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:51:45,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:51:45,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:51:45,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:51:45,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:51:45,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:51:45" (1/1) ... [2021-11-02 22:51:45,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2f51c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:45, skipping insertion in model container [2021-11-02 22:51:45,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:51:45" (1/1) ... [2021-11-02 22:51:45,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:51:46,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:51:46,684 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-02 22:51:46,968 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-02 22:51:46,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:51:46,998 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:51:47,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:51:47,054 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-02 22:51:47,178 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-02 22:51:47,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:51:47,190 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:51:47,275 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2021-11-02 22:51:47,398 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_84f835c2-88e4-4f50-b708-6acdbcc3ca41/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2021-11-02 22:51:47,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:51:47,460 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:51:47,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47 WrapperNode [2021-11-02 22:51:47,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:51:47,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:51:47,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:51:47,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:51:47,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:51:47,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:51:47,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:51:47,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:51:47,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (1/1) ... [2021-11-02 22:51:47,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:51:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:51:47,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:51:47,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:51:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:51:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:51:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:51:47,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:51:47,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:51:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:51:47,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:51:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:51:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:51:47,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:51:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:51:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:51:47,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:51:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:51:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:51:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:51:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:51:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:51:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:51:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:51:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:51:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:51:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:51:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:51:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:51:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:51:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:51:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:51:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:51:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:51:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:51:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:51:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:51:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:51:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:51:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:51:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:51:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:51:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:51:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:51:47,883 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:51:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:51:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:51:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:51:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:51:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:51:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:51:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:51:47,885 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:51:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:51:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:51:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:51:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:51:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:51:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:51:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:51:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:51:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:51:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:51:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:51:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:51:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:51:47,891 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:51:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:51:47,892 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:51:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:51:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:51:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:51:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:51:47,893 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:51:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:51:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:51:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:51:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:51:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:51:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:51:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:51:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:51:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:51:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:51:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:51:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:51:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:51:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:51:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:51:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:51:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:51:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:51:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:51:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:51:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:51:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:51:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:51:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:51:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:51:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:51:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:51:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:51:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:51:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:51:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:51:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:51:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:51:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:51:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:51:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:51:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:51:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:51:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:51:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:51:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:51:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:51:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:51:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:51:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:51:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:51:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:51:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:51:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:51:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:51:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:51:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:51:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:51:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:51:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:51:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:51:47,913 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:51:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:51:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:51:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:51:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:51:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:51:47,921 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:51:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:51:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:51:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:51:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:51:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:51:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:51:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:51:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:51:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:51:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:51:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:51:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:51:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:51:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:51:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:51:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:51:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:51:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:51:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:51:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:51:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:51:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:51:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:51:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:51:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:51:48,728 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:51:54,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:51:54,689 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-02 22:51:54,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:51:54 BoogieIcfgContainer [2021-11-02 22:51:54,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:51:54,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:51:54,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:51:54,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:51:54,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:51:45" (1/3) ... [2021-11-02 22:51:54,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fabfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:51:54, skipping insertion in model container [2021-11-02 22:51:54,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:51:47" (2/3) ... [2021-11-02 22:51:54,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fabfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:51:54, skipping insertion in model container [2021-11-02 22:51:54,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:51:54" (3/3) ... [2021-11-02 22:51:54,704 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2021-11-02 22:51:54,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:51:54,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-02 22:51:54,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:51:54,779 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 22:51:54,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-02 22:51:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 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 22:51:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:51:54,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:54,879 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:54,879 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:51:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash 976431319, now seen corresponding path program 1 times [2021-11-02 22:51:54,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:51:54,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571024171] [2021-11-02 22:51:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:54,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:51:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:51:54,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:51:54,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:51:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:55,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:51:55,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:51:55,382 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 22:51:55,408 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 22:51:55,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:51:55,485 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 22:51:55,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:51:55,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571024171] [2021-11-02 22:51:55,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571024171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:55,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:55,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:51:55,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331780589] [2021-11-02 22:51:55,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:51:55,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:51:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:51:55,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:51:55,519 INFO L87 Difference]: Start difference. First operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 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 22:51:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:58,089 INFO L93 Difference]: Finished difference Result 1075 states and 1140 transitions. [2021-11-02 22:51:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:51:58,097 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 22:51:58,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:58,142 INFO L225 Difference]: With dead ends: 1075 [2021-11-02 22:51:58,142 INFO L226 Difference]: Without dead ends: 1072 [2021-11-02 22:51:58,147 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 22:51:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-02 22:51:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1064. [2021-11-02 22:51:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 532 states have (on average 2.0845864661654137) internal successors, (1109), 1053 states have internal predecessors, (1109), 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 22:51:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1130 transitions. [2021-11-02 22:51:58,309 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1130 transitions. Word has length 7 [2021-11-02 22:51:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:58,310 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1130 transitions. [2021-11-02 22:51:58,311 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 22:51:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1130 transitions. [2021-11-02 22:51:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:51:58,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:58,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:51:58,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:51:58,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:51:58,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:51:58,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash 976431320, now seen corresponding path program 1 times [2021-11-02 22:51:58,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:51:58,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315712375] [2021-11-02 22:51:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:58,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:51:58,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:51:58,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:51:58,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:51:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:58,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:51:58,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:51:58,808 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 22:51:58,828 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 22:51:58,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:51:58,916 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 22:51:58,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:51:58,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315712375] [2021-11-02 22:51:58,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315712375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:51:58,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:51:58,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:51:58,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811095456] [2021-11-02 22:51:58,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:51:58,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:51:58,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:51:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:51:58,921 INFO L87 Difference]: Start difference. First operand 1064 states and 1130 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 22:52:05,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:05,505 INFO L93 Difference]: Finished difference Result 1538 states and 1638 transitions. [2021-11-02 22:52:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:52:05,506 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 22:52:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:05,517 INFO L225 Difference]: With dead ends: 1538 [2021-11-02 22:52:05,517 INFO L226 Difference]: Without dead ends: 1538 [2021-11-02 22:52:05,518 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 22:52:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-11-02 22:52:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1099. [2021-11-02 22:52:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 576 states have (on average 2.0625) internal successors, (1188), 1088 states have internal predecessors, (1188), 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 22:52:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1209 transitions. [2021-11-02 22:52:05,562 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1209 transitions. Word has length 7 [2021-11-02 22:52:05,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:05,562 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1209 transitions. [2021-11-02 22:52:05,563 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 22:52:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1209 transitions. [2021-11-02 22:52:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:52:05,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:05,564 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:05,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:05,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:05,776 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:05,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash -499465612, now seen corresponding path program 1 times [2021-11-02 22:52:05,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:05,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395268055] [2021-11-02 22:52:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:05,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:05,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:05,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:52:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:06,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:52:06,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:06,127 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 22:52:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:52:06,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:06,203 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 22:52:06,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:06,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395268055] [2021-11-02 22:52:06,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395268055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:06,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:06,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:52:06,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500376965] [2021-11-02 22:52:06,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:52:06,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:52:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:52:06,206 INFO L87 Difference]: Start difference. First operand 1099 states and 1209 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 22:52:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:09,025 INFO L93 Difference]: Finished difference Result 1427 states and 1562 transitions. [2021-11-02 22:52:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:52:09,027 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 22:52:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:09,037 INFO L225 Difference]: With dead ends: 1427 [2021-11-02 22:52:09,037 INFO L226 Difference]: Without dead ends: 1427 [2021-11-02 22:52:09,037 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 22:52:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-02 22:52:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1050. [2021-11-02 22:52:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 576 states have (on average 1.9722222222222223) internal successors, (1136), 1039 states have internal predecessors, (1136), 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 22:52:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1157 transitions. [2021-11-02 22:52:09,076 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1157 transitions. Word has length 12 [2021-11-02 22:52:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:09,076 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1157 transitions. [2021-11-02 22:52:09,077 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 22:52:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1157 transitions. [2021-11-02 22:52:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:52:09,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:09,078 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:09,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:09,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:09,300 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -499465611, now seen corresponding path program 1 times [2021-11-02 22:52:09,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:09,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031408079] [2021-11-02 22:52:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:09,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:09,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:09,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:09,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:52:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:09,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:52:09,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:09,588 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 22:52:09,634 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 22:52:09,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:09,766 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 22:52:09,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:09,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031408079] [2021-11-02 22:52:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031408079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:09,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:09,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:52:09,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104824610] [2021-11-02 22:52:09,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:09,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:09,772 INFO L87 Difference]: Start difference. First operand 1050 states and 1157 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 22:52:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:15,045 INFO L93 Difference]: Finished difference Result 1470 states and 1569 transitions. [2021-11-02 22:52:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:52:15,046 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 22:52:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:15,056 INFO L225 Difference]: With dead ends: 1470 [2021-11-02 22:52:15,056 INFO L226 Difference]: Without dead ends: 1470 [2021-11-02 22:52:15,057 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 22:52:15,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-02 22:52:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1040. [2021-11-02 22:52:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 576 states have (on average 1.9496527777777777) internal successors, (1123), 1029 states have internal predecessors, (1123), 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 22:52:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1144 transitions. [2021-11-02 22:52:15,117 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1144 transitions. Word has length 12 [2021-11-02 22:52:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:15,118 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1144 transitions. [2021-11-02 22:52:15,118 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 22:52:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1144 transitions. [2021-11-02 22:52:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:52:15,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:15,120 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:15,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:15,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:15,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1684895394, now seen corresponding path program 1 times [2021-11-02 22:52:15,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:15,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256454257] [2021-11-02 22:52:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:15,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:15,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:15,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:52:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:15,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:52:15,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:15,779 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 22:52:15,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:15,900 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 22:52:15,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:15,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256454257] [2021-11-02 22:52:15,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256454257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:15,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:15,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:52:15,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013758151] [2021-11-02 22:52:15,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:15,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:15,909 INFO L87 Difference]: Start difference. First operand 1040 states and 1144 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 22:52:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:16,939 INFO L93 Difference]: Finished difference Result 1486 states and 1622 transitions. [2021-11-02 22:52:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:52:16,940 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 22:52:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:16,950 INFO L225 Difference]: With dead ends: 1486 [2021-11-02 22:52:16,950 INFO L226 Difference]: Without dead ends: 1486 [2021-11-02 22:52:16,950 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 22:52:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-02 22:52:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1276. [2021-11-02 22:52:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 812 states have (on average 1.937192118226601) internal successors, (1573), 1265 states have internal predecessors, (1573), 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 22:52:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1594 transitions. [2021-11-02 22:52:17,015 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1594 transitions. Word has length 15 [2021-11-02 22:52:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:17,018 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1594 transitions. [2021-11-02 22:52:17,018 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 22:52:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1594 transitions. [2021-11-02 22:52:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:52:17,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:17,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:52:17,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:17,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:17,243 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr532ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 692149927, now seen corresponding path program 1 times [2021-11-02 22:52:17,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:17,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563968403] [2021-11-02 22:52:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:17,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:17,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:17,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:52:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:17,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:52:17,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:17,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:52:17,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:52:17,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:52:17,669 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-02 22:52:17,670 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 22:52:17,749 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-02 22:52:17,750 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 22:52:17,787 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 22:52:17,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:17,888 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 22:52:17,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:17,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563968403] [2021-11-02 22:52:17,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563968403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:17,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:17,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:52:17,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981525173] [2021-11-02 22:52:17,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:52:17,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:52:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:52:17,892 INFO L87 Difference]: Start difference. First operand 1276 states and 1594 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 22:52:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:20,389 INFO L93 Difference]: Finished difference Result 1639 states and 2018 transitions. [2021-11-02 22:52:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:52:20,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 16 [2021-11-02 22:52:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:20,399 INFO L225 Difference]: With dead ends: 1639 [2021-11-02 22:52:20,399 INFO L226 Difference]: Without dead ends: 1639 [2021-11-02 22:52:20,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:52:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-02 22:52:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1275. [2021-11-02 22:52:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 811 states have (on average 1.93711467324291) internal successors, (1571), 1264 states have internal predecessors, (1571), 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 22:52:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1592 transitions. [2021-11-02 22:52:20,441 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1592 transitions. Word has length 16 [2021-11-02 22:52:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:20,441 INFO L470 AbstractCegarLoop]: Abstraction has 1275 states and 1592 transitions. [2021-11-02 22:52:20,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 22:52:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1592 transitions. [2021-11-02 22:52:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:52:20,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:20,443 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 22:52:20,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:20,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:20,656 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1440200288, now seen corresponding path program 1 times [2021-11-02 22:52:20,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:20,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699823251] [2021-11-02 22:52:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:20,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:20,658 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:20,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:52:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:52:20,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:21,014 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 22:52:21,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:21,087 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 22:52:21,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:21,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699823251] [2021-11-02 22:52:21,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699823251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:21,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:21,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:52:21,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300295905] [2021-11-02 22:52:21,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:21,090 INFO L87 Difference]: Start difference. First operand 1275 states and 1592 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 22:52:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:21,119 INFO L93 Difference]: Finished difference Result 1215 states and 1506 transitions. [2021-11-02 22:52:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:52:21,119 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 22:52:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:21,127 INFO L225 Difference]: With dead ends: 1215 [2021-11-02 22:52:21,127 INFO L226 Difference]: Without dead ends: 1215 [2021-11-02 22:52:21,131 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 22:52:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-11-02 22:52:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2021-11-02 22:52:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 775 states have (on average 1.9161290322580644) internal successors, (1485), 1204 states have internal predecessors, (1485), 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 22:52:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1506 transitions. [2021-11-02 22:52:21,167 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1506 transitions. Word has length 22 [2021-11-02 22:52:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:21,168 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1506 transitions. [2021-11-02 22:52:21,168 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 22:52:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1506 transitions. [2021-11-02 22:52:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:52:21,169 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:21,169 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 22:52:21,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:21,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:21,391 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1053008550, now seen corresponding path program 1 times [2021-11-02 22:52:21,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:21,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447399122] [2021-11-02 22:52:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:21,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:21,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:21,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:21,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:52:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:21,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:52:21,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:21,835 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 22:52:21,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:21,909 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 22:52:21,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:21,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447399122] [2021-11-02 22:52:21,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447399122] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:21,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:21,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:52:21,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870310419] [2021-11-02 22:52:21,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:52:21,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:52:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:52:21,913 INFO L87 Difference]: Start difference. First operand 1215 states and 1506 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 22:52:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:22,014 INFO L93 Difference]: Finished difference Result 1187 states and 1450 transitions. [2021-11-02 22:52:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:52:22,016 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 22:52:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:22,024 INFO L225 Difference]: With dead ends: 1187 [2021-11-02 22:52:22,024 INFO L226 Difference]: Without dead ends: 1187 [2021-11-02 22:52:22,024 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 22:52:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-02 22:52:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2021-11-02 22:52:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 759 states have (on average 1.8801054018445322) internal successors, (1427), 1174 states have internal predecessors, (1427), 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 22:52:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1448 transitions. [2021-11-02 22:52:22,058 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1448 transitions. Word has length 24 [2021-11-02 22:52:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:22,059 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1448 transitions. [2021-11-02 22:52:22,059 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 22:52:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1448 transitions. [2021-11-02 22:52:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:52:22,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:22,061 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 22:52:22,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:22,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:22,276 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:22,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash 646849896, now seen corresponding path program 1 times [2021-11-02 22:52:22,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:22,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440311236] [2021-11-02 22:52:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:22,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:22,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:22,281 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:22,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:52:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:22,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:52:22,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:22,620 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 22:52:22,779 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 22:52:22,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:22,967 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 22:52:22,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:22,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440311236] [2021-11-02 22:52:22,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440311236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:22,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:22,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:52:22,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881070945] [2021-11-02 22:52:22,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:22,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:22,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:22,971 INFO L87 Difference]: Start difference. First operand 1185 states and 1448 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 22:52:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:25,588 INFO L93 Difference]: Finished difference Result 1656 states and 2041 transitions. [2021-11-02 22:52:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:52:25,603 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 22:52:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:25,611 INFO L225 Difference]: With dead ends: 1656 [2021-11-02 22:52:25,611 INFO L226 Difference]: Without dead ends: 1656 [2021-11-02 22:52:25,612 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 22:52:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-02 22:52:25,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1181. [2021-11-02 22:52:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 759 states have (on average 1.8695652173913044) internal successors, (1419), 1170 states have internal predecessors, (1419), 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 22:52:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1440 transitions. [2021-11-02 22:52:25,647 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1440 transitions. Word has length 38 [2021-11-02 22:52:25,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:25,648 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1440 transitions. [2021-11-02 22:52:25,648 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 22:52:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1440 transitions. [2021-11-02 22:52:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:52:25,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:25,650 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 22:52:25,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:25,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:25,866 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 646849897, now seen corresponding path program 1 times [2021-11-02 22:52:25,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:25,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109957843] [2021-11-02 22:52:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:25,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:25,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:25,869 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:25,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:52:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:26,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:52:26,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:26,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:52:26,622 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 22:52:26,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:27,287 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 22:52:27,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:27,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109957843] [2021-11-02 22:52:27,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109957843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:27,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:27,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:52:27,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938506910] [2021-11-02 22:52:27,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:52:27,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:52:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:52:27,292 INFO L87 Difference]: Start difference. First operand 1181 states and 1440 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 22:52:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:36,375 INFO L93 Difference]: Finished difference Result 1787 states and 2194 transitions. [2021-11-02 22:52:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:52:36,376 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 22:52:36,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:36,385 INFO L225 Difference]: With dead ends: 1787 [2021-11-02 22:52:36,385 INFO L226 Difference]: Without dead ends: 1787 [2021-11-02 22:52:36,386 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 22:52:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-02 22:52:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1177. [2021-11-02 22:52:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 759 states have (on average 1.8590250329380764) internal successors, (1411), 1166 states have internal predecessors, (1411), 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 22:52:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1432 transitions. [2021-11-02 22:52:36,439 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1432 transitions. Word has length 38 [2021-11-02 22:52:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:36,440 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1432 transitions. [2021-11-02 22:52:36,440 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 22:52:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1432 transitions. [2021-11-02 22:52:36,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:52:36,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:36,451 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 22:52:36,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:36,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:36,667 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash -927296089, now seen corresponding path program 1 times [2021-11-02 22:52:36,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:36,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656384031] [2021-11-02 22:52:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:36,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:36,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:36,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:36,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:52:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:37,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:52:37,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:37,292 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 22:52:37,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:37,491 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 22:52:37,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:37,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656384031] [2021-11-02 22:52:37,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656384031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:37,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:37,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:52:37,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140100233] [2021-11-02 22:52:37,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:52:37,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:52:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:52:37,493 INFO L87 Difference]: Start difference. First operand 1177 states and 1432 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 22:52:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:52:37,572 INFO L93 Difference]: Finished difference Result 1165 states and 1412 transitions. [2021-11-02 22:52:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:52:37,573 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 22:52:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:52:37,583 INFO L225 Difference]: With dead ends: 1165 [2021-11-02 22:52:37,583 INFO L226 Difference]: Without dead ends: 1165 [2021-11-02 22:52:37,584 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 22:52:37,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-02 22:52:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-11-02 22:52:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 747 states have (on average 1.8621151271753682) internal successors, (1391), 1154 states have internal predecessors, (1391), 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 22:52:37,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1412 transitions. [2021-11-02 22:52:37,617 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1412 transitions. Word has length 56 [2021-11-02 22:52:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:52:37,618 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1412 transitions. [2021-11-02 22:52:37,618 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 22:52:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1412 transitions. [2021-11-02 22:52:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:52:37,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:52:37,624 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 22:52:37,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:52:37,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:52:37,845 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:52:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:52:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 548320627, now seen corresponding path program 1 times [2021-11-02 22:52:37,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:52:37,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559097524] [2021-11-02 22:52:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:52:37,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:52:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:52:37,847 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:52:37,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:52:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:52:38,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:52:38,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:52:38,494 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 22:52:38,503 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 22:52:39,413 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:52:39,414 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 22:52:39,422 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:52:39,422 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 22:52:39,459 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 22:52:39,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:52:44,814 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 22:52:44,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:52:44,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559097524] [2021-11-02 22:52:44,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559097524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:52:44,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:52:44,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:52:44,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080381580] [2021-11-02 22:52:44,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:52:44,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:52:44,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:52:44,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:52:44,818 INFO L87 Difference]: Start difference. First operand 1165 states and 1412 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 22:53:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:03,740 INFO L93 Difference]: Finished difference Result 2114 states and 2669 transitions. [2021-11-02 22:53:03,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:53:03,742 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 22:53:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:03,753 INFO L225 Difference]: With dead ends: 2114 [2021-11-02 22:53:03,753 INFO L226 Difference]: Without dead ends: 2114 [2021-11-02 22:53:03,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 22:53:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2021-11-02 22:53:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1127. [2021-11-02 22:53:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 747 states have (on average 1.8112449799196788) internal successors, (1353), 1116 states have internal predecessors, (1353), 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 22:53:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1374 transitions. [2021-11-02 22:53:03,789 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1374 transitions. Word has length 64 [2021-11-02 22:53:03,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:03,790 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1374 transitions. [2021-11-02 22:53:03,790 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 22:53:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1374 transitions. [2021-11-02 22:53:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:53:03,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:03,792 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 22:53:03,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:04,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:53:04,031 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:53:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash -812720204, now seen corresponding path program 1 times [2021-11-02 22:53:04,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:53:04,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725646523] [2021-11-02 22:53:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:04,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:53:04,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:53:04,034 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:53:04,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:53:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:04,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:53:04,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:04,807 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 22:53:04,836 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 22:53:04,891 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 22:53:04,911 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 22:53:04,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:53:05,085 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 22:53:05,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:53:05,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725646523] [2021-11-02 22:53:05,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725646523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:05,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:05,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:53:05,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094001819] [2021-11-02 22:53:05,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:53:05,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:53:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:53:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:53:05,088 INFO L87 Difference]: Start difference. First operand 1127 states and 1374 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 22:53:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:08,671 INFO L93 Difference]: Finished difference Result 1126 states and 1373 transitions. [2021-11-02 22:53:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:53:08,671 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 22:53:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:08,677 INFO L225 Difference]: With dead ends: 1126 [2021-11-02 22:53:08,677 INFO L226 Difference]: Without dead ends: 1126 [2021-11-02 22:53:08,678 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 22:53:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-02 22:53:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2021-11-02 22:53:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 747 states have (on average 1.8099062918340028) internal successors, (1352), 1115 states have internal predecessors, (1352), 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 22:53:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1373 transitions. [2021-11-02 22:53:08,703 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1373 transitions. Word has length 69 [2021-11-02 22:53:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:08,704 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1373 transitions. [2021-11-02 22:53:08,704 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 22:53:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1373 transitions. [2021-11-02 22:53:08,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:53:08,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:08,706 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 22:53:08,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:53:08,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:53:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash -812720203, now seen corresponding path program 1 times [2021-11-02 22:53:08,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:53:08,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285404499] [2021-11-02 22:53:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:08,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:53:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:53:08,929 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:53:08,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:53:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:09,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:53:09,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:09,924 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 22:53:09,963 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 22:53:09,987 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 22:53:10,059 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 22:53:10,064 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 22:53:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:10,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:53:10,476 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 22:53:10,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:53:10,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285404499] [2021-11-02 22:53:10,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285404499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:10,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:10,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:53:10,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913455] [2021-11-02 22:53:10,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:53:10,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:53:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:53:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:53:10,478 INFO L87 Difference]: Start difference. First operand 1126 states and 1373 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 22:53:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:20,727 INFO L93 Difference]: Finished difference Result 1125 states and 1372 transitions. [2021-11-02 22:53:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:53:20,728 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 22:53:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:20,733 INFO L225 Difference]: With dead ends: 1125 [2021-11-02 22:53:20,733 INFO L226 Difference]: Without dead ends: 1125 [2021-11-02 22:53:20,734 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 22:53:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-02 22:53:20,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2021-11-02 22:53:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 746 states have (on average 1.8109919571045576) internal successors, (1351), 1114 states have internal predecessors, (1351), 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 22:53:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1372 transitions. [2021-11-02 22:53:20,756 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1372 transitions. Word has length 69 [2021-11-02 22:53:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:20,757 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1372 transitions. [2021-11-02 22:53:20,757 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 22:53:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1372 transitions. [2021-11-02 22:53:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:53:20,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:20,763 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 22:53:20,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-02 22:53:20,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:53:20,986 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:53:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1139648005, now seen corresponding path program 1 times [2021-11-02 22:53:20,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:53:20,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597518411] [2021-11-02 22:53:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:20,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:53:20,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:53:20,989 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:53:21,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:53:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:21,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:53:21,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:21,748 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 22:53:21,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:53:21,934 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 22:53:21,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:53:21,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597518411] [2021-11-02 22:53:21,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597518411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:21,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:21,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:53:21,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893123768] [2021-11-02 22:53:21,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:53:21,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:53:21,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:53:21,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:53:21,937 INFO L87 Difference]: Start difference. First operand 1125 states and 1372 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 22:53:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:22,087 INFO L93 Difference]: Finished difference Result 1135 states and 1385 transitions. [2021-11-02 22:53:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:53:22,089 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 22:53:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:22,096 INFO L225 Difference]: With dead ends: 1135 [2021-11-02 22:53:22,097 INFO L226 Difference]: Without dead ends: 1135 [2021-11-02 22:53:22,097 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 22:53:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-02 22:53:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2021-11-02 22:53:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 754 states have (on average 1.8076923076923077) internal successors, (1363), 1123 states have internal predecessors, (1363), 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 22:53:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1385 transitions. [2021-11-02 22:53:22,141 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1385 transitions. Word has length 77 [2021-11-02 22:53:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:22,142 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1385 transitions. [2021-11-02 22:53:22,142 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 22:53:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1385 transitions. [2021-11-02 22:53:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:53:22,148 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:22,148 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 22:53:22,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:22,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:53:22,366 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:53:22,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2077664763, now seen corresponding path program 1 times [2021-11-02 22:53:22,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:53:22,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746806326] [2021-11-02 22:53:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:22,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:53:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:53:22,372 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:53:22,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:53:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:23,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:53:23,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:23,249 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 22:53:23,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:53:23,626 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 22:53:23,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:53:23,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746806326] [2021-11-02 22:53:23,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746806326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:53:23,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:23,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:53:23,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407717631] [2021-11-02 22:53:23,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:53:23,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:53:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:53:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:53:23,629 INFO L87 Difference]: Start difference. First operand 1135 states and 1385 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 22:53:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:24,175 INFO L93 Difference]: Finished difference Result 1149 states and 1403 transitions. [2021-11-02 22:53:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:53:24,176 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 22:53:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:24,184 INFO L225 Difference]: With dead ends: 1149 [2021-11-02 22:53:24,184 INFO L226 Difference]: Without dead ends: 1145 [2021-11-02 22:53:24,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:53:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-02 22:53:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1141. [2021-11-02 22:53:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 760 states have (on average 1.8039473684210525) internal successors, (1371), 1129 states have internal predecessors, (1371), 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 22:53:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1393 transitions. [2021-11-02 22:53:24,209 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1393 transitions. Word has length 79 [2021-11-02 22:53:24,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:24,209 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1393 transitions. [2021-11-02 22:53:24,210 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 22:53:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1393 transitions. [2021-11-02 22:53:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:53:24,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:24,211 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 22:53:24,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-02 22:53:24,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:53:24,448 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:53:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -931774981, now seen corresponding path program 2 times [2021-11-02 22:53:24,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:53:24,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133382193] [2021-11-02 22:53:24,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:53:24,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:53:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:53:24,450 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:53:24,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:53:25,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:53:25,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:25,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:53:25,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:25,584 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 22:53:25,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:53:26,192 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 22:53:26,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:53:26,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133382193] [2021-11-02 22:53:26,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133382193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:53:26,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:26,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:53:26,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170474112] [2021-11-02 22:53:26,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:53:26,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:53:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:53:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:53:26,195 INFO L87 Difference]: Start difference. First operand 1141 states and 1393 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 22:53:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:27,969 INFO L93 Difference]: Finished difference Result 1169 states and 1431 transitions. [2021-11-02 22:53:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:53:27,971 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 22:53:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:27,978 INFO L225 Difference]: With dead ends: 1169 [2021-11-02 22:53:27,978 INFO L226 Difference]: Without dead ends: 1165 [2021-11-02 22:53:27,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:53:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-02 22:53:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1153. [2021-11-02 22:53:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 772 states have (on average 1.7966321243523315) internal successors, (1387), 1141 states have internal predecessors, (1387), 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 22:53:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1409 transitions. [2021-11-02 22:53:28,003 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1409 transitions. Word has length 83 [2021-11-02 22:53:28,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:28,003 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1409 transitions. [2021-11-02 22:53:28,003 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 22:53:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1409 transitions. [2021-11-02 22:53:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:53:28,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:28,005 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 22:53:28,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-02 22:53:28,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:53:28,225 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:53:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -351179269, now seen corresponding path program 3 times [2021-11-02 22:53:28,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:53:28,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77417943] [2021-11-02 22:53:28,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:53:28,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:53:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:53:28,228 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:53:28,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:53:29,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:53:29,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:29,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:53:29,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:30,109 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 22:53:30,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:53:31,827 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 22:53:31,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:53:31,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77417943] [2021-11-02 22:53:31,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77417943] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:53:31,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:31,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:53:31,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242776460] [2021-11-02 22:53:31,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:53:31,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:53:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:53:31,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:53:31,830 INFO L87 Difference]: Start difference. First operand 1153 states and 1409 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 22:53:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:39,805 INFO L93 Difference]: Finished difference Result 1209 states and 1487 transitions. [2021-11-02 22:53:39,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:53:39,806 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 22:53:39,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:39,814 INFO L225 Difference]: With dead ends: 1209 [2021-11-02 22:53:39,814 INFO L226 Difference]: Without dead ends: 1205 [2021-11-02 22:53:39,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:53:39,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2021-11-02 22:53:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1177. [2021-11-02 22:53:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 796 states have (on average 1.7826633165829147) internal successors, (1419), 1165 states have internal predecessors, (1419), 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 22:53:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1441 transitions. [2021-11-02 22:53:39,843 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1441 transitions. Word has length 91 [2021-11-02 22:53:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:39,844 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1441 transitions. [2021-11-02 22:53:39,844 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 22:53:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1441 transitions. [2021-11-02 22:53:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 22:53:39,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:39,846 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 22:53:39,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:40,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:53:40,060 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:53:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2109197819, now seen corresponding path program 4 times [2021-11-02 22:53:40,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:53:40,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088616559] [2021-11-02 22:53:40,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:53:40,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:53:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:53:40,062 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:53:40,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:53:40,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:53:40,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:40,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:53:40,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:42,276 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 22:53:42,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:53:47,860 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 22:53:47,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:53:47,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088616559] [2021-11-02 22:53:47,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088616559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:53:47,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:47,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:53:47,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116727183] [2021-11-02 22:53:47,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:53:47,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:53:47,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:53:47,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:53:47,865 INFO L87 Difference]: Start difference. First operand 1177 states and 1441 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 22:54:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:06,343 INFO L93 Difference]: Finished difference Result 1271 states and 1563 transitions. [2021-11-02 22:54:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:54:06,344 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 22:54:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:06,353 INFO L225 Difference]: With dead ends: 1271 [2021-11-02 22:54:06,353 INFO L226 Difference]: Without dead ends: 1267 [2021-11-02 22:54:06,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:54:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-11-02 22:54:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1207. [2021-11-02 22:54:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 826 states have (on average 1.7736077481840193) internal successors, (1465), 1195 states have internal predecessors, (1465), 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 22:54:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1487 transitions. [2021-11-02 22:54:06,390 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1487 transitions. Word has length 107 [2021-11-02 22:54:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:06,391 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 1487 transitions. [2021-11-02 22:54:06,391 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 22:54:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1487 transitions. [2021-11-02 22:54:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:54:06,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:06,393 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 22:54:06,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:06,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:06,611 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-02 22:54:06,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:06,611 INFO L85 PathProgramCache]: Analyzing trace with hash -736370181, now seen corresponding path program 5 times [2021-11-02 22:54:06,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:06,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326354484] [2021-11-02 22:54:06,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:54:06,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:06,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:06,613 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:06,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f835c2-88e4-4f50-b708-6acdbcc3ca41/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-02 22:54:08,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:54:08,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:08,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:54:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:08,503 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 22:54:08,786 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:54:08,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-02 22:54:08,831 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 22:54:09,032 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