./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL --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 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:33:03,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:33:03,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:33:04,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:33:04,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:33:04,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:33:04,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:33:04,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:33:04,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:33:04,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:33:04,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:33:04,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:33:04,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:33:04,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:33:04,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:33:04,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:33:04,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:33:04,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:33:04,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:33:04,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:33:04,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:33:04,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:33:04,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:33:04,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:33:04,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:33:04,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:33:04,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:33:04,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:33:04,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:33:04,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:33:04,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:33:04,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:33:04,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:33:04,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:33:04,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:33:04,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:33:04,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:33:04,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:33:04,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:33:04,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:33:04,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:33:04,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:33:04,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:33:04,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:33:04,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:33:04,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:33:04,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:33:04,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:33:04,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:33:04,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:33:04,170 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:33:04,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:33:04,171 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:33:04,171 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:33:04,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:33:04,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:33:04,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:33:04,172 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:33:04,172 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:33:04,172 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:33:04,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:33:04,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:33:04,173 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:33:04,173 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:33:04,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:33:04,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:33:04,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:33:04,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:33:04,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:33:04,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:33:04,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:33:04,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:33:04,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:33:04,175 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2021-11-19 05:33:04,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:33:04,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:33:04,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:33:04,503 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:33:04,503 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:33:04,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-19 05:33:04,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/a3ca149fa/8ee8859b610043aabeb599fcf47b06a8/FLAG414012811 [2021-11-19 05:33:05,217 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:33:05,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-19 05:33:05,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/a3ca149fa/8ee8859b610043aabeb599fcf47b06a8/FLAG414012811 [2021-11-19 05:33:05,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/a3ca149fa/8ee8859b610043aabeb599fcf47b06a8 [2021-11-19 05:33:05,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:33:05,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:33:05,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:33:05,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:33:05,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:33:05,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:33:05" (1/1) ... [2021-11-19 05:33:05,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c4ecf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:05, skipping insertion in model container [2021-11-19 05:33:05,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:33:05" (1/1) ... [2021-11-19 05:33:05,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:33:05,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:33:05,926 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-19 05:33:06,115 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-19 05:33:06,122 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:33:06,131 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) [2021-11-19 05:33:06,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e67a29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:06, skipping insertion in model container [2021-11-19 05:33:06,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:33:06,132 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 05:33:06,134 INFO L158 Benchmark]: Toolchain (without parser) took 681.35ms. Allocated memory is still 119.5MB. Free memory was 83.9MB in the beginning and 85.6MB in the end (delta: -1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:33:06,134 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory was 45.9MB in the beginning and 45.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:33:06,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 666.64ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 85.6MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:33:06,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 92.3MB. Free memory was 45.9MB in the beginning and 45.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 666.64ms. Allocated memory is still 119.5MB. Free memory was 83.7MB in the beginning and 85.6MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL --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 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:33:08,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:33:08,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:33:08,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:33:08,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:33:08,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:33:08,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:33:08,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:33:08,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:33:08,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:33:08,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:33:08,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:33:08,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:33:08,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:33:08,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:33:08,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:33:08,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:33:08,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:33:08,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:33:08,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:33:08,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:33:08,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:33:08,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:33:08,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:33:08,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:33:08,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:33:08,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:33:08,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:33:08,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:33:08,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:33:08,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:33:08,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:33:08,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:33:08,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:33:08,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:33:08,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:33:08,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:33:08,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:33:08,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:33:08,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:33:08,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:33:08,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:33:08,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:33:08,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:33:08,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:33:08,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:33:08,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:33:08,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:33:08,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:33:08,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:33:08,600 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:33:08,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:33:08,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:33:08,602 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:33:08,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:33:08,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:33:08,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:33:08,603 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:33:08,603 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:33:08,603 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:33:08,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:33:08,604 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:33:08,604 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:33:08,604 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:33:08,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:33:08,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:33:08,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:33:08,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:33:08,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:33:08,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:33:08,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:33:08,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:33:08,607 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:33:08,607 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:33:08,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:33:08,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:33:08,608 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2021-11-19 05:33:08,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:33:08,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:33:08,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:33:08,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:33:08,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:33:08,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-19 05:33:09,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/6d7b0e641/a170219848c94500899df98267d5afbf/FLAGcccf69d24 [2021-11-19 05:33:09,705 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:33:09,706 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-19 05:33:09,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/6d7b0e641/a170219848c94500899df98267d5afbf/FLAGcccf69d24 [2021-11-19 05:33:09,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/data/6d7b0e641/a170219848c94500899df98267d5afbf [2021-11-19 05:33:09,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:33:09,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:33:09,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:33:09,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:33:09,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:33:09,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:33:09" (1/1) ... [2021-11-19 05:33:09,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ae37d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:09, skipping insertion in model container [2021-11-19 05:33:09,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:33:09" (1/1) ... [2021-11-19 05:33:09,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:33:09,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:33:10,447 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-19 05:33:10,655 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-19 05:33:10,663 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:33:10,675 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 05:33:10,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:33:10,731 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-19 05:33:10,797 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-19 05:33:10,803 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:33:10,807 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:33:10,832 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[33021,33034] [2021-11-19 05:33:10,875 WARN L230 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_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i[45234,45247] [2021-11-19 05:33:10,878 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:33:10,927 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:33:10,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10 WrapperNode [2021-11-19 05:33:10,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:33:10,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:33:10,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:33:10,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:33:10,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:10,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:10,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:10,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:11,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:11,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:11,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:11,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:33:11,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:33:11,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:33:11,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:33:11,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (1/1) ... [2021-11-19 05:33:11,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:33:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:11,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:33:11,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:33:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:33:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:33:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:33:11,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:33:11,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:33:11,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:33:11,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:33:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:33:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 05:33:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:33:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-19 05:33:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:33:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 05:33:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 05:33:11,203 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 05:33:11,203 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 05:33:11,203 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 05:33:11,203 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 05:33:11,203 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 05:33:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 05:33:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 05:33:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 05:33:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 05:33:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 05:33:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 05:33:11,204 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 05:33:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 05:33:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 05:33:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 05:33:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 05:33:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 05:33:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 05:33:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 05:33:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 05:33:11,207 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 05:33:11,207 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 05:33:11,207 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 05:33:11,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 05:33:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 05:33:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 05:33:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 05:33:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 05:33:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 05:33:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 05:33:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 05:33:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 05:33:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 05:33:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 05:33:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 05:33:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 05:33:11,213 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 05:33:11,213 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 05:33:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 05:33:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 05:33:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 05:33:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 05:33:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:33:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:33:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:33:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:33:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:33:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:33:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:33:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:33:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:33:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:33:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:33:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:33:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:33:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:33:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:33:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:33:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:33:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:33:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:33:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:33:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:33:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:33:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:33:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:33:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:33:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:33:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:33:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:33:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:33:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:33:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:33:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:33:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:33:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:33:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:33:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:33:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:33:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:33:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:33:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:33:11,237 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:33:11,238 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:33:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:33:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 05:33:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:33:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 05:33:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 05:33:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 05:33:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 05:33:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:33:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:33:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:33:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:33:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:33:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 05:33:11,730 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:33:11,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:33:11,809 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 05:33:16,150 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:33:16,169 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:33:16,169 INFO L301 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-19 05:33:16,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:33:16 BoogieIcfgContainer [2021-11-19 05:33:16,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:33:16,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:33:16,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:33:16,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:33:16,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:33:09" (1/3) ... [2021-11-19 05:33:16,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a35fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:33:16, skipping insertion in model container [2021-11-19 05:33:16,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:10" (2/3) ... [2021-11-19 05:33:16,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a35fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:33:16, skipping insertion in model container [2021-11-19 05:33:16,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:33:16" (3/3) ... [2021-11-19 05:33:16,189 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2021-11-19 05:33:16,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:33:16,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-19 05:33:16,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:33:16,271 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 [2021-11-19 05:33:16,271 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-19 05:33:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 05:33:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:33:16,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:16,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:16,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash -292335135, now seen corresponding path program 1 times [2021-11-19 05:33:16,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:16,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684010635] [2021-11-19 05:33:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:16,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:16,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:16,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:16,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:33:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:16,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:33:16,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:16,658 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 [2021-11-19 05:33:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:16,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:16,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:16,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684010635] [2021-11-19 05:33:16,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684010635] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:16,730 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:16,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:33:16,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427936002] [2021-11-19 05:33:16,732 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:16,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:33:16,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:33:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:16,786 INFO L87 Difference]: Start difference. First operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) 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) [2021-11-19 05:33:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:18,578 INFO L93 Difference]: Finished difference Result 1105 states and 1191 transitions. [2021-11-19 05:33:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:33:18,581 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 [2021-11-19 05:33:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:18,616 INFO L225 Difference]: With dead ends: 1105 [2021-11-19 05:33:18,617 INFO L226 Difference]: Without dead ends: 1102 [2021-11-19 05:33:18,618 INFO L932 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 [2021-11-19 05:33:18,624 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 971 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:18,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 835 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 05:33:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-19 05:33:18,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1090. [2021-11-19 05:33:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 544 states have (on average 2.088235294117647) internal successors, (1136), 1077 states have internal predecessors, (1136), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 05:33:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1181 transitions. [2021-11-19 05:33:18,765 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1181 transitions. Word has length 7 [2021-11-19 05:33:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:18,765 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1181 transitions. [2021-11-19 05:33:18,765 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) [2021-11-19 05:33:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1181 transitions. [2021-11-19 05:33:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:33:18,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:18,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:18,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:18,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:18,994 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:18,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:18,995 INFO L85 PathProgramCache]: Analyzing trace with hash -292335134, now seen corresponding path program 1 times [2021-11-19 05:33:18,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:18,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147613677] [2021-11-19 05:33:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:18,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:18,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:18,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:19,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:33:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:19,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:19,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:19,230 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 [2021-11-19 05:33:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:19,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:19,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:19,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147613677] [2021-11-19 05:33:19,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147613677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:19,319 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:19,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:33:19,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314295789] [2021-11-19 05:33:19,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:19,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:33:19,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:33:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:33:19,324 INFO L87 Difference]: Start difference. First operand 1090 states and 1181 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) [2021-11-19 05:33:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:24,082 INFO L93 Difference]: Finished difference Result 1566 states and 1691 transitions. [2021-11-19 05:33:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:24,082 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 [2021-11-19 05:33:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:24,092 INFO L225 Difference]: With dead ends: 1566 [2021-11-19 05:33:24,092 INFO L226 Difference]: Without dead ends: 1566 [2021-11-19 05:33:24,092 INFO L932 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 [2021-11-19 05:33:24,094 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 1557 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:24,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 1520 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 05:33:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-11-19 05:33:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1129. [2021-11-19 05:33:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 591 states have (on average 2.0676818950930627) internal successors, (1222), 1115 states have internal predecessors, (1222), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 05:33:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1269 transitions. [2021-11-19 05:33:24,145 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1269 transitions. Word has length 7 [2021-11-19 05:33:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:24,146 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1269 transitions. [2021-11-19 05:33:24,146 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) [2021-11-19 05:33:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1269 transitions. [2021-11-19 05:33:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:33:24,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:24,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:24,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:24,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:24,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:24,360 INFO L85 PathProgramCache]: Analyzing trace with hash -184131353, now seen corresponding path program 1 times [2021-11-19 05:33:24,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:24,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535453162] [2021-11-19 05:33:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:24,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:24,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:24,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:24,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:33:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:24,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:24,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:24,608 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 [2021-11-19 05:33:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:24,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:24,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:24,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535453162] [2021-11-19 05:33:24,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535453162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:24,729 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:24,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 05:33:24,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710090340] [2021-11-19 05:33:24,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:24,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:33:24,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:24,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:33:24,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:33:24,731 INFO L87 Difference]: Start difference. First operand 1129 states and 1269 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) [2021-11-19 05:33:29,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:29,711 INFO L93 Difference]: Finished difference Result 1565 states and 1690 transitions. [2021-11-19 05:33:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:29,713 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 [2021-11-19 05:33:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:29,722 INFO L225 Difference]: With dead ends: 1565 [2021-11-19 05:33:29,722 INFO L226 Difference]: Without dead ends: 1565 [2021-11-19 05:33:29,722 INFO L932 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 [2021-11-19 05:33:29,723 INFO L933 BasicCegarLoop]: 1210 mSDtfsCounter, 752 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:29,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2174 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-19 05:33:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-19 05:33:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1327. [2021-11-19 05:33:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 798 states have (on average 2.0426065162907268) internal successors, (1630), 1312 states have internal predecessors, (1630), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1679 transitions. [2021-11-19 05:33:29,765 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1679 transitions. Word has length 12 [2021-11-19 05:33:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:29,766 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1679 transitions. [2021-11-19 05:33:29,766 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) [2021-11-19 05:33:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1679 transitions. [2021-11-19 05:33:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 05:33:29,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:29,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:29,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:29,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:29,981 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash -184131354, now seen corresponding path program 1 times [2021-11-19 05:33:29,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:29,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114394915] [2021-11-19 05:33:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:29,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:29,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:29,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:33:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:30,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:33:30,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:30,175 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 [2021-11-19 05:33:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:30,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:30,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:30,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114394915] [2021-11-19 05:33:30,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114394915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:30,223 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:30,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:33:30,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351303661] [2021-11-19 05:33:30,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:30,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:33:30,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:33:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:30,225 INFO L87 Difference]: Start difference. First operand 1327 states and 1679 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) [2021-11-19 05:33:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:31,875 INFO L93 Difference]: Finished difference Result 1656 states and 2033 transitions. [2021-11-19 05:33:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:33:31,875 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 [2021-11-19 05:33:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:31,884 INFO L225 Difference]: With dead ends: 1656 [2021-11-19 05:33:31,884 INFO L226 Difference]: Without dead ends: 1656 [2021-11-19 05:33:31,885 INFO L932 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 [2021-11-19 05:33:31,886 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 980 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:31,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1308 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 05:33:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-19 05:33:31,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1280. [2021-11-19 05:33:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9774436090225564) internal successors, (1578), 1265 states have internal predecessors, (1578), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1627 transitions. [2021-11-19 05:33:31,932 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1627 transitions. Word has length 12 [2021-11-19 05:33:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:31,933 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1627 transitions. [2021-11-19 05:33:31,933 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) [2021-11-19 05:33:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1627 transitions. [2021-11-19 05:33:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:33:31,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:31,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:31,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 05:33:32,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:32,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash -42398436, now seen corresponding path program 1 times [2021-11-19 05:33:32,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:32,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607970706] [2021-11-19 05:33:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:32,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:32,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:32,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:32,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:33:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:32,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:32,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:32,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:33:32,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:33:32,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 05:33:32,387 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 05:33:32,388 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 [2021-11-19 05:33:32,479 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 05:33:32,480 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 [2021-11-19 05:33:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:32,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:32,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:32,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607970706] [2021-11-19 05:33:32,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607970706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:32,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:32,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:33:32,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381669626] [2021-11-19 05:33:32,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:32,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:33:32,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:33:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:33:32,581 INFO L87 Difference]: Start difference. First operand 1280 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:34,436 INFO L93 Difference]: Finished difference Result 1790 states and 2346 transitions. [2021-11-19 05:33:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:34,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 05:33:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:34,446 INFO L225 Difference]: With dead ends: 1790 [2021-11-19 05:33:34,447 INFO L226 Difference]: Without dead ends: 1790 [2021-11-19 05:33:34,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:33:34,448 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 356 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:34,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 3995 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 05:33:34,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-19 05:33:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1280. [2021-11-19 05:33:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9761904761904763) internal successors, (1577), 1265 states have internal predecessors, (1577), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1626 transitions. [2021-11-19 05:33:34,486 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1626 transitions. Word has length 14 [2021-11-19 05:33:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:34,487 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1626 transitions. [2021-11-19 05:33:34,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1626 transitions. [2021-11-19 05:33:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:33:34,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:34,488 INFO L514 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] [2021-11-19 05:33:34,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:34,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:34,713 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1725470958, now seen corresponding path program 1 times [2021-11-19 05:33:34,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:34,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500669071] [2021-11-19 05:33:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:34,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:34,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:34,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:33:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:34,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:33:34,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:34,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:35,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:35,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500669071] [2021-11-19 05:33:35,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500669071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:35,006 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:35,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 05:33:35,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274486852] [2021-11-19 05:33:35,006 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:35,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:33:35,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:33:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:33:35,008 INFO L87 Difference]: Start difference. First operand 1280 states and 1626 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) [2021-11-19 05:33:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:35,053 INFO L93 Difference]: Finished difference Result 1247 states and 1592 transitions. [2021-11-19 05:33:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:33:35,054 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 [2021-11-19 05:33:35,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:35,061 INFO L225 Difference]: With dead ends: 1247 [2021-11-19 05:33:35,061 INFO L226 Difference]: Without dead ends: 1247 [2021-11-19 05:33:35,062 INFO L932 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 [2021-11-19 05:33:35,062 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1932 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:35,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1937 Valid, 1155 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:33:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-19 05:33:35,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1238. [2021-11-19 05:33:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 780 states have (on average 1.9666666666666666) internal successors, (1534), 1223 states have internal predecessors, (1534), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1583 transitions. [2021-11-19 05:33:35,095 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1583 transitions. Word has length 22 [2021-11-19 05:33:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:35,096 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1583 transitions. [2021-11-19 05:33:35,096 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) [2021-11-19 05:33:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1583 transitions. [2021-11-19 05:33:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:33:35,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:35,097 INFO L514 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] [2021-11-19 05:33:35,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:35,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:35,309 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash -320213556, now seen corresponding path program 1 times [2021-11-19 05:33:35,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:35,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642990552] [2021-11-19 05:33:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:35,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:35,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:35,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:35,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:33:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:35,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:35,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:35,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:35,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:35,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642990552] [2021-11-19 05:33:35,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642990552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:35,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:35,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 05:33:35,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347405431] [2021-11-19 05:33:35,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:35,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:33:35,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:33:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:35,647 INFO L87 Difference]: Start difference. First operand 1238 states and 1583 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) [2021-11-19 05:33:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:35,726 INFO L93 Difference]: Finished difference Result 1226 states and 1564 transitions. [2021-11-19 05:33:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:35,726 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 [2021-11-19 05:33:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:35,733 INFO L225 Difference]: With dead ends: 1226 [2021-11-19 05:33:35,733 INFO L226 Difference]: Without dead ends: 1226 [2021-11-19 05:33:35,733 INFO L932 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 [2021-11-19 05:33:35,734 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1864 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:35,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1869 Valid, 2117 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:33:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-11-19 05:33:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1216. [2021-11-19 05:33:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 772 states have (on average 1.9494818652849741) internal successors, (1505), 1201 states have internal predecessors, (1505), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1554 transitions. [2021-11-19 05:33:35,764 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1554 transitions. Word has length 24 [2021-11-19 05:33:35,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:35,764 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1554 transitions. [2021-11-19 05:33:35,764 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) [2021-11-19 05:33:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1554 transitions. [2021-11-19 05:33:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:33:35,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:35,766 INFO L514 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] [2021-11-19 05:33:35,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 05:33:35,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:35,980 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash 44817114, now seen corresponding path program 1 times [2021-11-19 05:33:35,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:35,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856759330] [2021-11-19 05:33:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:35,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:35,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:35,982 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:35,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:33:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:36,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:36,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:36,172 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 [2021-11-19 05:33:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:36,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:36,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:36,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856759330] [2021-11-19 05:33:36,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856759330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:36,405 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:36,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:33:36,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214641180] [2021-11-19 05:33:36,405 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:36,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:33:36,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:33:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:33:36,407 INFO L87 Difference]: Start difference. First operand 1216 states and 1554 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) [2021-11-19 05:33:38,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:38,225 INFO L93 Difference]: Finished difference Result 1806 states and 2377 transitions. [2021-11-19 05:33:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:38,226 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 [2021-11-19 05:33:38,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:38,235 INFO L225 Difference]: With dead ends: 1806 [2021-11-19 05:33:38,236 INFO L226 Difference]: Without dead ends: 1806 [2021-11-19 05:33:38,236 INFO L932 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 [2021-11-19 05:33:38,237 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 2108 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:38,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2110 Valid, 1011 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 05:33:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-19 05:33:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1212. [2021-11-19 05:33:38,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 772 states have (on average 1.944300518134715) internal successors, (1501), 1197 states have internal predecessors, (1501), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1550 transitions. [2021-11-19 05:33:38,270 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1550 transitions. Word has length 38 [2021-11-19 05:33:38,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:38,271 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1550 transitions. [2021-11-19 05:33:38,271 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) [2021-11-19 05:33:38,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1550 transitions. [2021-11-19 05:33:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:33:38,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:38,273 INFO L514 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] [2021-11-19 05:33:38,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:38,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:38,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash 44817115, now seen corresponding path program 1 times [2021-11-19 05:33:38,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:38,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143921624] [2021-11-19 05:33:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:38,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:38,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:38,489 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:38,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:33:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:38,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:33:38,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:38,690 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 [2021-11-19 05:33:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:38,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:39,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:39,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143921624] [2021-11-19 05:33:39,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143921624] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:39,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:39,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:33:39,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242006471] [2021-11-19 05:33:39,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:39,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:33:39,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:39,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:33:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:33:39,419 INFO L87 Difference]: Start difference. First operand 1212 states and 1550 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) [2021-11-19 05:33:45,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:45,639 INFO L93 Difference]: Finished difference Result 1453 states and 1568 transitions. [2021-11-19 05:33:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:33:45,641 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 [2021-11-19 05:33:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:45,647 INFO L225 Difference]: With dead ends: 1453 [2021-11-19 05:33:45,647 INFO L226 Difference]: Without dead ends: 1453 [2021-11-19 05:33:45,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:33:45,648 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1848 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:45,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 2183 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 05:33:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-19 05:33:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1208. [2021-11-19 05:33:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 772 states have (on average 1.939119170984456) internal successors, (1497), 1193 states have internal predecessors, (1497), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1546 transitions. [2021-11-19 05:33:45,678 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1546 transitions. Word has length 38 [2021-11-19 05:33:45,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:45,679 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1546 transitions. [2021-11-19 05:33:45,679 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) [2021-11-19 05:33:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1546 transitions. [2021-11-19 05:33:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 05:33:45,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:45,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:45,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:45,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:45,892 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:45,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1384262345, now seen corresponding path program 1 times [2021-11-19 05:33:45,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:45,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122163066] [2021-11-19 05:33:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:45,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:45,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:45,895 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:45,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:33:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:46,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:46,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:46,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:46,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:46,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122163066] [2021-11-19 05:33:46,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122163066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:46,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:46,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:33:46,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030473629] [2021-11-19 05:33:46,400 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:46,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:33:46,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:33:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:33:46,401 INFO L87 Difference]: Start difference. First operand 1208 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:46,463 INFO L93 Difference]: Finished difference Result 1211 states and 1545 transitions. [2021-11-19 05:33:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-11-19 05:33:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:46,469 INFO L225 Difference]: With dead ends: 1211 [2021-11-19 05:33:46,470 INFO L226 Difference]: Without dead ends: 1211 [2021-11-19 05:33:46,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:46,471 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 913 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:46,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2095 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:33:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-19 05:33:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1202. [2021-11-19 05:33:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 766 states have (on average 1.941253263707572) internal successors, (1487), 1187 states have internal predecessors, (1487), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1536 transitions. [2021-11-19 05:33:46,497 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1536 transitions. Word has length 53 [2021-11-19 05:33:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:46,498 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1536 transitions. [2021-11-19 05:33:46,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1536 transitions. [2021-11-19 05:33:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:33:46,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:46,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:46,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:46,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:46,712 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:46,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:46,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1870144277, now seen corresponding path program 1 times [2021-11-19 05:33:46,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:46,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725426092] [2021-11-19 05:33:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:46,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:46,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:46,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:46,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:33:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:46,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:46,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:47,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:47,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:47,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725426092] [2021-11-19 05:33:47,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725426092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:47,712 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:47,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 05:33:47,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630641587] [2021-11-19 05:33:47,713 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:47,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:33:47,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:47,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:33:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:47,714 INFO L87 Difference]: Start difference. First operand 1202 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:47,957 INFO L93 Difference]: Finished difference Result 1742 states and 2271 transitions. [2021-11-19 05:33:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:33:47,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-19 05:33:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:47,966 INFO L225 Difference]: With dead ends: 1742 [2021-11-19 05:33:47,966 INFO L226 Difference]: Without dead ends: 1742 [2021-11-19 05:33:47,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:47,967 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 407 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:47,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2085 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:33:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-11-19 05:33:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1563. [2021-11-19 05:33:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1125 states have (on average 1.9244444444444444) internal successors, (2165), 1546 states have internal predecessors, (2165), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-19 05:33:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2218 transitions. [2021-11-19 05:33:48,017 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2218 transitions. Word has length 61 [2021-11-19 05:33:48,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:48,017 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2218 transitions. [2021-11-19 05:33:48,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:33:48,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2218 transitions. [2021-11-19 05:33:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:33:48,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:48,024 INFO L514 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] [2021-11-19 05:33:48,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:48,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:48,236 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash 740278757, now seen corresponding path program 1 times [2021-11-19 05:33:48,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:48,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610498348] [2021-11-19 05:33:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:48,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:48,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:48,239 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:48,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 05:33:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:48,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:33:48,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:48,632 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 [2021-11-19 05:33:48,639 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 [2021-11-19 05:33:49,275 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 05:33:49,275 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 [2021-11-19 05:33:49,281 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 05:33:49,282 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 [2021-11-19 05:33:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:49,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:33:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:54,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:33:54,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610498348] [2021-11-19 05:33:54,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610498348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:54,110 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:54,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:33:54,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804528049] [2021-11-19 05:33:54,110 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:54,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:33:54,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:33:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:33:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 05:33:54,112 INFO L87 Difference]: Start difference. First operand 1563 states and 2218 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) [2021-11-19 05:33:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:59,302 INFO L93 Difference]: Finished difference Result 2168 states and 2916 transitions. [2021-11-19 05:33:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:33:59,309 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 [2021-11-19 05:33:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:59,321 INFO L225 Difference]: With dead ends: 2168 [2021-11-19 05:33:59,321 INFO L226 Difference]: Without dead ends: 2168 [2021-11-19 05:33:59,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 05:33:59,322 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1500 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:59,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1625 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1408 Invalid, 0 Unknown, 1083 Unchecked, 5.1s Time] [2021-11-19 05:33:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2021-11-19 05:33:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1175. [2021-11-19 05:33:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 773 states have (on average 1.8253557567917205) internal successors, (1411), 1160 states have internal predecessors, (1411), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:33:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1460 transitions. [2021-11-19 05:33:59,352 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1460 transitions. Word has length 64 [2021-11-19 05:33:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:59,352 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1460 transitions. [2021-11-19 05:33:59,353 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) [2021-11-19 05:33:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1460 transitions. [2021-11-19 05:33:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:33:59,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:59,354 INFO L514 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] [2021-11-19 05:33:59,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 05:33:59,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:33:59,568 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:33:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1556673562, now seen corresponding path program 1 times [2021-11-19 05:33:59,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:33:59,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369849255] [2021-11-19 05:33:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:59,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:33:59,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:33:59,570 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:33:59,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 05:33:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:59,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:33:59,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:59,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:00,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 05:34:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:00,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:00,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369849255] [2021-11-19 05:34:00,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369849255] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:00,319 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:00,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:34:00,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671374029] [2021-11-19 05:34:00,320 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:00,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:34:00,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:34:00,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:34:00,321 INFO L87 Difference]: Start difference. First operand 1175 states and 1460 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-19 05:34:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:01,900 INFO L93 Difference]: Finished difference Result 1173 states and 1458 transitions. [2021-11-19 05:34:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:34:01,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 66 [2021-11-19 05:34:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:01,905 INFO L225 Difference]: With dead ends: 1173 [2021-11-19 05:34:01,906 INFO L226 Difference]: Without dead ends: 1173 [2021-11-19 05:34:01,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:34:01,906 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2550 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:01,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2555 Valid, 807 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 05:34:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-19 05:34:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-19 05:34:01,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 773 states have (on average 1.8227684346701165) internal successors, (1409), 1158 states have internal predecessors, (1409), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:34:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1458 transitions. [2021-11-19 05:34:01,927 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1458 transitions. Word has length 66 [2021-11-19 05:34:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:01,928 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1458 transitions. [2021-11-19 05:34:01,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-19 05:34:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1458 transitions. [2021-11-19 05:34:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:34:01,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:01,929 INFO L514 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] [2021-11-19 05:34:01,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:02,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:02,143 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807298, now seen corresponding path program 1 times [2021-11-19 05:34:02,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:02,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462692703] [2021-11-19 05:34:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:02,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:02,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:02,145 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:02,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 05:34:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:02,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:34:02,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:02,567 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 [2021-11-19 05:34:02,582 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 23 treesize of output 19 [2021-11-19 05:34:02,620 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 25 treesize of output 13 [2021-11-19 05:34:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:02,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:02,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:02,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462692703] [2021-11-19 05:34:02,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462692703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:02,761 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:02,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:34:02,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033373815] [2021-11-19 05:34:02,762 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:02,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:34:02,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:34:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:34:02,763 INFO L87 Difference]: Start difference. First operand 1173 states and 1458 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) [2021-11-19 05:34:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:05,264 INFO L93 Difference]: Finished difference Result 1172 states and 1457 transitions. [2021-11-19 05:34:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:34:05,264 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 [2021-11-19 05:34:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:05,269 INFO L225 Difference]: With dead ends: 1172 [2021-11-19 05:34:05,269 INFO L226 Difference]: Without dead ends: 1172 [2021-11-19 05:34:05,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:34:05,269 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 4 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:05,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2568 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 05:34:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-19 05:34:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-19 05:34:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 773 states have (on average 1.8214747736093144) internal successors, (1408), 1157 states have internal predecessors, (1408), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:34:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1457 transitions. [2021-11-19 05:34:05,294 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1457 transitions. Word has length 69 [2021-11-19 05:34:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:05,294 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1457 transitions. [2021-11-19 05:34:05,294 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) [2021-11-19 05:34:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1457 transitions. [2021-11-19 05:34:05,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:34:05,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:05,295 INFO L514 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] [2021-11-19 05:34:05,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 05:34:05,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:05,508 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807297, now seen corresponding path program 1 times [2021-11-19 05:34:05,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:05,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565393623] [2021-11-19 05:34:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:05,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:05,510 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:05,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 05:34:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:05,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:34:05,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:05,888 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 [2021-11-19 05:34:05,912 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 [2021-11-19 05:34:05,923 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 [2021-11-19 05:34:05,988 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 [2021-11-19 05:34:05,992 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 [2021-11-19 05:34:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:06,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:06,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:06,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565393623] [2021-11-19 05:34:06,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565393623] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:06,301 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:06,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 05:34:06,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243573710] [2021-11-19 05:34:06,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:06,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:34:06,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:34:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:34:06,303 INFO L87 Difference]: Start difference. First operand 1172 states and 1457 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) [2021-11-19 05:34:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:14,200 INFO L93 Difference]: Finished difference Result 1171 states and 1456 transitions. [2021-11-19 05:34:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:34:14,202 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 [2021-11-19 05:34:14,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:14,207 INFO L225 Difference]: With dead ends: 1171 [2021-11-19 05:34:14,207 INFO L226 Difference]: Without dead ends: 1171 [2021-11-19 05:34:14,207 INFO L932 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 [2021-11-19 05:34:14,208 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 3 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:14,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3683 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-19 05:34:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-19 05:34:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2021-11-19 05:34:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 772 states have (on average 1.822538860103627) internal successors, (1407), 1156 states have internal predecessors, (1407), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 05:34:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1456 transitions. [2021-11-19 05:34:14,228 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1456 transitions. Word has length 69 [2021-11-19 05:34:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:14,228 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1456 transitions. [2021-11-19 05:34:14,228 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) [2021-11-19 05:34:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1456 transitions. [2021-11-19 05:34:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 05:34:14,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:14,229 INFO L514 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] [2021-11-19 05:34:14,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 05:34:14,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:14,442 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:14,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash 178416389, now seen corresponding path program 1 times [2021-11-19 05:34:14,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:14,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500262706] [2021-11-19 05:34:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:14,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:14,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:14,444 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:14,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 05:34:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:14,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:34:14,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:14,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:15,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:15,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500262706] [2021-11-19 05:34:15,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500262706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:15,011 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:15,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 05:34:15,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16894188] [2021-11-19 05:34:15,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:15,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:34:15,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:34:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:34:15,012 INFO L87 Difference]: Start difference. First operand 1171 states and 1456 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) [2021-11-19 05:34:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:15,094 INFO L93 Difference]: Finished difference Result 1181 states and 1469 transitions. [2021-11-19 05:34:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:34:15,095 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 [2021-11-19 05:34:15,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:15,101 INFO L225 Difference]: With dead ends: 1181 [2021-11-19 05:34:15,101 INFO L226 Difference]: Without dead ends: 1181 [2021-11-19 05:34:15,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:34:15,102 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 9 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:15,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2902 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:34:15,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-11-19 05:34:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2021-11-19 05:34:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 780 states have (on average 1.8192307692307692) internal successors, (1419), 1165 states have internal predecessors, (1419), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:34:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1469 transitions. [2021-11-19 05:34:15,126 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1469 transitions. Word has length 77 [2021-11-19 05:34:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:15,127 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1469 transitions. [2021-11-19 05:34:15,127 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) [2021-11-19 05:34:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1469 transitions. [2021-11-19 05:34:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 05:34:15,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:15,128 INFO L514 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] [2021-11-19 05:34:15,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:15,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:15,342 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:15,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:15,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1398946491, now seen corresponding path program 1 times [2021-11-19 05:34:15,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:15,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499967790] [2021-11-19 05:34:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:15,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:15,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:15,344 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:15,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 05:34:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:15,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:34:15,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:15,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:15,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:15,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499967790] [2021-11-19 05:34:15,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499967790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:15,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:34:15,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 05:34:15,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647142109] [2021-11-19 05:34:15,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:15,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:34:15,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:34:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:34:15,977 INFO L87 Difference]: Start difference. First operand 1181 states and 1469 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) [2021-11-19 05:34:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:16,325 INFO L93 Difference]: Finished difference Result 1195 states and 1487 transitions. [2021-11-19 05:34:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:34:16,327 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 [2021-11-19 05:34:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:16,333 INFO L225 Difference]: With dead ends: 1195 [2021-11-19 05:34:16,333 INFO L226 Difference]: Without dead ends: 1191 [2021-11-19 05:34:16,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:34:16,334 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 24 mSDsluCounter, 5795 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 6766 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:16,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 6766 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:34:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-11-19 05:34:16,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1187. [2021-11-19 05:34:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 786 states have (on average 1.8155216284987277) internal successors, (1427), 1171 states have internal predecessors, (1427), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:34:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1477 transitions. [2021-11-19 05:34:16,357 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1477 transitions. Word has length 79 [2021-11-19 05:34:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:16,357 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1477 transitions. [2021-11-19 05:34:16,357 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) [2021-11-19 05:34:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1477 transitions. [2021-11-19 05:34:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 05:34:16,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:16,358 INFO L514 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] [2021-11-19 05:34:16,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:16,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:16,561 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash -512767547, now seen corresponding path program 2 times [2021-11-19 05:34:16,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:16,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837205801] [2021-11-19 05:34:16,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:34:16,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:16,563 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:16,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 05:34:17,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:34:17,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:34:17,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:34:17,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:17,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:17,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:17,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837205801] [2021-11-19 05:34:17,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837205801] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:17,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:34:17,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-19 05:34:17,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705367073] [2021-11-19 05:34:17,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:17,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:34:17,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:17,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:34:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:34:17,745 INFO L87 Difference]: Start difference. First operand 1187 states and 1477 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) [2021-11-19 05:34:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:18,985 INFO L93 Difference]: Finished difference Result 1215 states and 1515 transitions. [2021-11-19 05:34:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 05:34:18,987 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 [2021-11-19 05:34:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:18,993 INFO L225 Difference]: With dead ends: 1215 [2021-11-19 05:34:18,994 INFO L226 Difference]: Without dead ends: 1211 [2021-11-19 05:34:18,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 05:34:18,995 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 84 mSDsluCounter, 6801 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:18,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 7776 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:34:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-19 05:34:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1199. [2021-11-19 05:34:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 798 states have (on average 1.8082706766917294) internal successors, (1443), 1183 states have internal predecessors, (1443), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:34:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1493 transitions. [2021-11-19 05:34:19,018 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1493 transitions. Word has length 83 [2021-11-19 05:34:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:19,019 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1493 transitions. [2021-11-19 05:34:19,019 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) [2021-11-19 05:34:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1493 transitions. [2021-11-19 05:34:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 05:34:19,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:19,020 INFO L514 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] [2021-11-19 05:34:19,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:19,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:19,234 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash 326177477, now seen corresponding path program 3 times [2021-11-19 05:34:19,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:19,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782055547] [2021-11-19 05:34:19,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:34:19,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:19,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:19,236 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:19,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 05:34:20,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 05:34:20,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:34:20,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:34:20,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:20,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:21,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:21,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782055547] [2021-11-19 05:34:21,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782055547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:21,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:34:21,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-19 05:34:21,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836867207] [2021-11-19 05:34:21,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:21,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 05:34:21,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 05:34:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 05:34:21,986 INFO L87 Difference]: Start difference. First operand 1199 states and 1493 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) [2021-11-19 05:34:28,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:28,834 INFO L93 Difference]: Finished difference Result 1255 states and 1577 transitions. [2021-11-19 05:34:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-19 05:34:28,834 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 [2021-11-19 05:34:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:28,841 INFO L225 Difference]: With dead ends: 1255 [2021-11-19 05:34:28,841 INFO L226 Difference]: Without dead ends: 1249 [2021-11-19 05:34:28,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 05:34:28,843 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 236 mSDsluCounter, 15632 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 16614 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:28,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 16614 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 05:34:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-19 05:34:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1223. [2021-11-19 05:34:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 822 states have (on average 1.7931873479318734) internal successors, (1474), 1207 states have internal predecessors, (1474), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:34:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1524 transitions. [2021-11-19 05:34:28,882 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1524 transitions. Word has length 91 [2021-11-19 05:34:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:28,882 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1524 transitions. [2021-11-19 05:34:28,882 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) [2021-11-19 05:34:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1524 transitions. [2021-11-19 05:34:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 05:34:28,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:28,884 INFO L514 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] [2021-11-19 05:34:28,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:29,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:29,100 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:29,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1201101627, now seen corresponding path program 4 times [2021-11-19 05:34:29,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:29,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560281047] [2021-11-19 05:34:29,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:34:29,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:29,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:29,102 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:29,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 05:34:29,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:34:29,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:34:29,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 05:34:29,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:30,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:34:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:33,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:34:33,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560281047] [2021-11-19 05:34:33,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560281047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:34:33,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:34:33,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-19 05:34:33,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34882194] [2021-11-19 05:34:33,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:34:33,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 05:34:33,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:34:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 05:34:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 05:34:33,972 INFO L87 Difference]: Start difference. First operand 1223 states and 1524 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) [2021-11-19 05:34:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:45,725 INFO L93 Difference]: Finished difference Result 1315 states and 1644 transitions. [2021-11-19 05:34:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-19 05:34:45,726 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 [2021-11-19 05:34:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:45,730 INFO L225 Difference]: With dead ends: 1315 [2021-11-19 05:34:45,730 INFO L226 Difference]: Without dead ends: 1311 [2021-11-19 05:34:45,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-19 05:34:45,737 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 278 mSDsluCounter, 31783 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 32781 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:45,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 32781 Invalid, 4552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-19 05:34:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2021-11-19 05:34:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1253. [2021-11-19 05:34:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 852 states have (on average 1.784037558685446) internal successors, (1520), 1237 states have internal predecessors, (1520), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-19 05:34:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1570 transitions. [2021-11-19 05:34:45,767 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1570 transitions. Word has length 107 [2021-11-19 05:34:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:45,768 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1570 transitions. [2021-11-19 05:34:45,768 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) [2021-11-19 05:34:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1570 transitions. [2021-11-19 05:34:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 05:34:45,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:45,770 INFO L514 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] [2021-11-19 05:34:45,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:45,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:34:45,985 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-19 05:34:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1844395141, now seen corresponding path program 5 times [2021-11-19 05:34:45,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:34:45,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621148506] [2021-11-19 05:34:45,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:34:45,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:34:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:34:45,987 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:34:45,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe02182e-e855-4bb7-b553-bd9a84ebbdb5/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 05:34:47,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-19 05:34:47,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:34:47,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-19 05:34:47,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:47,069 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 [2021-11-19 05:34:47,259 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 05:34:47,260 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 23 treesize of output 30 [2021-11-19 05:34:47,295 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 27 treesize of output 23 [2021-11-19 05:34:47,418 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 37 treesize of output 25 [2021-11-19 05:45:56,821 WARN L227 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)