./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:52,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:52,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:52,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:52,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:52,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:52,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:52,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:52,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:52,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:52,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:52,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:52,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:52,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:52,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:52,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:52,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:52,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:52,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:52,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:52,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:52,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:52,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:52,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:52,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:52,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:52,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:52,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:52,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:52,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:52,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:52,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:52,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:52,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:52,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:52,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:52,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:52,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:52,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:52,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:52,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:52,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:29:52,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:52,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:52,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:52,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:52,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:52,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:52,182 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:52,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:52,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:52,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:29:52,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:52,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:52,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:52,188 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:29:52,188 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:29:52,188 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:29:52,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:52,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:29:52,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:52,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:52,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:52,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:52,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:52,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:52,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:52,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:52,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:52,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:29:52,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:52,194 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_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2021-11-09 08:29:52,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:52,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:52,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:52,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:52,502 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:52,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-09 08:29:52,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/7b5bc8521/42a1c96f4ca24b02a3d2426245326155/FLAG2be3e3924 [2021-11-09 08:29:53,307 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:53,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-09 08:29:53,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/7b5bc8521/42a1c96f4ca24b02a3d2426245326155/FLAG2be3e3924 [2021-11-09 08:29:53,457 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/7b5bc8521/42a1c96f4ca24b02a3d2426245326155 [2021-11-09 08:29:53,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:53,473 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:29:53,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:53,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:53,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:53,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce1435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53, skipping insertion in model container [2021-11-09 08:29:53,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:53,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:54,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-09 08:29:54,430 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-09 08:29:54,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:54,487 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 08:29:54,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72f5be65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54, skipping insertion in model container [2021-11-09 08:29:54,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:54,489 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 08:29:54,492 INFO L168 Benchmark]: Toolchain (without parser) took 1016.95 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 73.0 MB in the beginning and 83.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:54,494 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:54,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1011.74 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 73.0 MB in the beginning and 83.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:54,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory is still 58.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1011.74 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 73.0 MB in the beginning and 83.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:56,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:56,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:56,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:56,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:56,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:56,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:56,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:56,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:56,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:56,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:56,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:56,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:56,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:56,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:56,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:56,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:56,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:56,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:57,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:57,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:57,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:57,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:57,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:57,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:57,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:57,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:57,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:57,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:57,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:57,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:57,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:57,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:57,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:57,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:57,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:57,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:57,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:57,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:57,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:57,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:57,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 08:29:57,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:57,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:57,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:57,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:57,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:57,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:57,091 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:57,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:57,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:57,093 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:29:57,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:57,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:57,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:57,095 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:29:57,096 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:29:57,096 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:29:57,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:57,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:29:57,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:29:57,097 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:29:57,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:57,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:57,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:57,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:57,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:57,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:57,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:57,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:57,100 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:29:57,101 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:29:57,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:57,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:29:57,102 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_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2021-11-09 08:29:57,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:57,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:57,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:57,577 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:57,578 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:57,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-09 08:29:57,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/c73c59d4a/e1c626ad88334e3ca1bc7dbf29e90d3a/FLAG159a5845d [2021-11-09 08:29:58,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:58,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2021-11-09 08:29:58,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/c73c59d4a/e1c626ad88334e3ca1bc7dbf29e90d3a/FLAG159a5845d [2021-11-09 08:29:58,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/data/c73c59d4a/e1c626ad88334e3ca1bc7dbf29e90d3a [2021-11-09 08:29:58,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:58,624 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:29:58,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:58,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:58,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:58,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:58" (1/1) ... [2021-11-09 08:29:58,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da2fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:58, skipping insertion in model container [2021-11-09 08:29:58,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:58" (1/1) ... [2021-11-09 08:29:58,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:58,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:59,291 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-09 08:29:59,560 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-09 08:29:59,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:59,622 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 08:29:59,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:59,689 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-09 08:29:59,798 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-09 08:29:59,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:59,837 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:59,871 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2021-11-09 08:29:59,989 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2021-11-09 08:30:00,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:30:00,061 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:30:00,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00 WrapperNode [2021-11-09 08:30:00,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:30:00,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:30:00,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:30:00,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:30:00,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:30:00,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:30:00,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:30:00,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:30:00,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (1/1) ... [2021-11-09 08:30:00,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:30:00,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:30:00,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:30:00,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:30:00,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:30:00,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 08:30:00,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 08:30:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 08:30:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 08:30:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 08:30:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:30:00,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 08:30:00,515 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 08:30:00,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:30:00,515 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 08:30:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 08:30:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 08:30:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 08:30:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 08:30:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 08:30:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 08:30:00,540 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 08:30:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 08:30:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 08:30:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 08:30:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 08:30:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 08:30:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 08:30:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 08:30:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 08:30:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 08:30:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 08:30:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 08:30:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 08:30:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 08:30:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 08:30:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 08:30:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 08:30:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 08:30:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 08:30:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 08:30:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 08:30:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 08:30:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 08:30:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 08:30:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 08:30:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 08:30:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 08:30:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 08:30:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 08:30:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 08:30:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 08:30:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 08:30:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 08:30:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 08:30:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 08:30:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 08:30:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 08:30:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 08:30:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 08:30:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 08:30:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 08:30:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 08:30:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 08:30:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 08:30:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 08:30:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:30:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:30:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:30:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:30:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:30:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:30:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:30:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:30:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:30:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:30:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:30:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:30:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:30:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:30:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:30:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:30:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 08:30:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 08:30:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 08:30:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 08:30:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 08:30:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:30:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:30:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:30:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:30:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:30:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:30:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:30:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:30:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:30:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:30:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:30:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:30:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:30:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:30:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:30:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:30:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:30:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:30:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:30:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:30:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:30:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:30:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:30:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:30:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:30:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:30:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:30:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:30:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:30:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:30:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:30:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:30:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:30:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:30:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:30:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:30:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:30:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:30:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:30:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:30:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:30:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:30:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:30:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:30:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:30:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:30:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:30:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:30:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:30:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:30:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:30:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:30:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:30:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:30:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:30:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:30:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:30:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:30:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:30:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:30:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:30:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:30:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:30:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:30:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:30:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:30:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:30:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:30:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:30:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:30:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:30:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:30:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:30:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:30:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:30:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:30:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:30:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 08:30:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 08:30:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:30:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:30:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 08:30:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 08:30:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:30:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:30:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 08:30:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:30:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 08:30:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:30:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:30:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:30:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:30:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 08:30:01,242 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 08:30:09,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:30:09,590 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-09 08:30:09,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:09 BoogieIcfgContainer [2021-11-09 08:30:09,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:30:09,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:30:09,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:30:09,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:30:09,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:29:58" (1/3) ... [2021-11-09 08:30:09,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd44c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:09, skipping insertion in model container [2021-11-09 08:30:09,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:30:00" (2/3) ... [2021-11-09 08:30:09,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd44c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:09, skipping insertion in model container [2021-11-09 08:30:09,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:09" (3/3) ... [2021-11-09 08:30:09,604 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-3.i [2021-11-09 08:30:09,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:30:09,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-11-09 08:30:09,659 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:30:09,666 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:30:09,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-11-09 08:30:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-09 08:30:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 08:30:09,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:09,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:09,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675552, now seen corresponding path program 1 times [2021-11-09 08:30:09,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:09,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914737881] [2021-11-09 08:30:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:09,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:09,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:09,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:09,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:30:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:10,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 08:30:10,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:10,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:10,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:10,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914737881] [2021-11-09 08:30:10,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914737881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:10,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:10,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:30:10,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714139526] [2021-11-09 08:30:10,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:30:10,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:30:10,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:30:10,283 INFO L87 Difference]: Start difference. First operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:10,381 INFO L93 Difference]: Finished difference Result 1823 states and 1925 transitions. [2021-11-09 08:30:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:30:10,382 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 9 [2021-11-09 08:30:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:10,420 INFO L225 Difference]: With dead ends: 1823 [2021-11-09 08:30:10,421 INFO L226 Difference]: Without dead ends: 1820 [2021-11-09 08:30:10,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:30:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-09 08:30:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2021-11-09 08:30:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 886 states have (on average 2.13882618510158) internal successors, (1895), 1806 states have internal predecessors, (1895), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 08:30:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 1922 transitions. [2021-11-09 08:30:10,610 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 1922 transitions. Word has length 9 [2021-11-09 08:30:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:10,611 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 1922 transitions. [2021-11-09 08:30:10,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 1922 transitions. [2021-11-09 08:30:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 08:30:10,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:10,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:10,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:10,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:10,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675490, now seen corresponding path program 1 times [2021-11-09 08:30:10,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:10,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423529575] [2021-11-09 08:30:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:10,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:10,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:10,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:10,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:30:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:11,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:11,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:11,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:30:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:11,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:11,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:11,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423529575] [2021-11-09 08:30:11,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423529575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:11,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:11,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:30:11,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489505460] [2021-11-09 08:30:11,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:11,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:11,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:11,254 INFO L87 Difference]: Start difference. First operand 1820 states and 1922 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:15,589 INFO L93 Difference]: Finished difference Result 2065 states and 2201 transitions. [2021-11-09 08:30:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 9 [2021-11-09 08:30:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:15,604 INFO L225 Difference]: With dead ends: 2065 [2021-11-09 08:30:15,604 INFO L226 Difference]: Without dead ends: 2065 [2021-11-09 08:30:15,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:15,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-11-09 08:30:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1805. [2021-11-09 08:30:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 962 states have (on average 2.0155925155925156) internal successors, (1939), 1791 states have internal predecessors, (1939), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 08:30:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 1966 transitions. [2021-11-09 08:30:15,677 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 1966 transitions. Word has length 9 [2021-11-09 08:30:15,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:15,677 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 1966 transitions. [2021-11-09 08:30:15,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:15,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 1966 transitions. [2021-11-09 08:30:15,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 08:30:15,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:15,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:15,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:15,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:15,899 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675489, now seen corresponding path program 1 times [2021-11-09 08:30:15,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:15,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76847701] [2021-11-09 08:30:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:15,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:15,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:15,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:15,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:30:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:16,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:16,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:16,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:30:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:16,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:16,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:16,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76847701] [2021-11-09 08:30:16,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76847701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:16,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:16,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:30:16,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185373877] [2021-11-09 08:30:16,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:16,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:16,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:16,286 INFO L87 Difference]: Start difference. First operand 1805 states and 1966 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:23,950 INFO L93 Difference]: Finished difference Result 2365 states and 2568 transitions. [2021-11-09 08:30:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:23,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (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 9 [2021-11-09 08:30:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:23,963 INFO L225 Difference]: With dead ends: 2365 [2021-11-09 08:30:23,964 INFO L226 Difference]: Without dead ends: 2365 [2021-11-09 08:30:23,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-11-09 08:30:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1961. [2021-11-09 08:30:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-09 08:30:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2272 transitions. [2021-11-09 08:30:24,023 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2272 transitions. Word has length 9 [2021-11-09 08:30:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:24,024 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2272 transitions. [2021-11-09 08:30:24,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2272 transitions. [2021-11-09 08:30:24,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 08:30:24,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:24,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:24,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:24,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:24,238 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:24,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash 429420143, now seen corresponding path program 1 times [2021-11-09 08:30:24,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:24,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578579134] [2021-11-09 08:30:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:24,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:24,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:24,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:30:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:24,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:24,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:24,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:24,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:24,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578579134] [2021-11-09 08:30:24,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578579134] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:24,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:24,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:30:24,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917614455] [2021-11-09 08:30:24,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:24,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:24,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:24,563 INFO L87 Difference]: Start difference. First operand 1961 states and 2272 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:24,771 INFO L93 Difference]: Finished difference Result 3512 states and 4106 transitions. [2021-11-09 08:30:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:24,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 10 [2021-11-09 08:30:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:24,793 INFO L225 Difference]: With dead ends: 3512 [2021-11-09 08:30:24,793 INFO L226 Difference]: Without dead ends: 3512 [2021-11-09 08:30:24,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-11-09 08:30:24,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2895. [2021-11-09 08:30:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2061 states have (on average 1.9718583212032994) internal successors, (4064), 2874 states have internal predecessors, (4064), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:30:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4105 transitions. [2021-11-09 08:30:24,883 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4105 transitions. Word has length 10 [2021-11-09 08:30:24,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:24,883 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 4105 transitions. [2021-11-09 08:30:24,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4105 transitions. [2021-11-09 08:30:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:30:24,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:24,884 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:24,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:25,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:25,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:25,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1992388696, now seen corresponding path program 1 times [2021-11-09 08:30:25,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:25,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058229258] [2021-11-09 08:30:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:25,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:25,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:25,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:25,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:30:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:25,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:25,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:25,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:25,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058229258] [2021-11-09 08:30:25,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058229258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:25,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:25,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:30:25,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210248603] [2021-11-09 08:30:25,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:25,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:25,449 INFO L87 Difference]: Start difference. First operand 2895 states and 4105 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:25,525 INFO L93 Difference]: Finished difference Result 2835 states and 4019 transitions. [2021-11-09 08:30:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 15 [2021-11-09 08:30:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:25,546 INFO L225 Difference]: With dead ends: 2835 [2021-11-09 08:30:25,546 INFO L226 Difference]: Without dead ends: 2835 [2021-11-09 08:30:25,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-11-09 08:30:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2021-11-09 08:30:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2025 states have (on average 1.9644444444444444) internal successors, (3978), 2814 states have internal predecessors, (3978), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:30:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4019 transitions. [2021-11-09 08:30:25,664 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4019 transitions. Word has length 15 [2021-11-09 08:30:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:25,665 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 4019 transitions. [2021-11-09 08:30:25,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4019 transitions. [2021-11-09 08:30:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:30:25,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:25,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:25,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:25,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:25,892 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 869875523, now seen corresponding path program 1 times [2021-11-09 08:30:25,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:25,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136403059] [2021-11-09 08:30:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:25,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:25,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:25,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:30:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:26,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:26,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:26,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:26,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:26,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136403059] [2021-11-09 08:30:26,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136403059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:26,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:26,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 08:30:26,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493621394] [2021-11-09 08:30:26,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:26,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:26,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:26,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:26,276 INFO L87 Difference]: Start difference. First operand 2835 states and 4019 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:26,399 INFO L93 Difference]: Finished difference Result 2807 states and 3963 transitions. [2021-11-09 08:30:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:26,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-09 08:30:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:26,416 INFO L225 Difference]: With dead ends: 2807 [2021-11-09 08:30:26,417 INFO L226 Difference]: Without dead ends: 2807 [2021-11-09 08:30:26,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-09 08:30:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2805. [2021-11-09 08:30:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2009 states have (on average 1.951219512195122) internal successors, (3920), 2784 states have internal predecessors, (3920), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:30:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3961 transitions. [2021-11-09 08:30:26,504 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3961 transitions. Word has length 17 [2021-11-09 08:30:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:26,504 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3961 transitions. [2021-11-09 08:30:26,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3961 transitions. [2021-11-09 08:30:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 08:30:26,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:26,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:26,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:26,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:26,728 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:26,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292016, now seen corresponding path program 1 times [2021-11-09 08:30:26,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:26,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026291106] [2021-11-09 08:30:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:26,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:26,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:26,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:26,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 08:30:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:26,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:26,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:27,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:30:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:27,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:27,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:27,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026291106] [2021-11-09 08:30:27,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026291106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:27,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:27,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:30:27,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488248760] [2021-11-09 08:30:27,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:27,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:27,287 INFO L87 Difference]: Start difference. First operand 2805 states and 3961 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:32,584 INFO L93 Difference]: Finished difference Result 4419 states and 6013 transitions. [2021-11-09 08:30:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 31 [2021-11-09 08:30:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:32,608 INFO L225 Difference]: With dead ends: 4419 [2021-11-09 08:30:32,609 INFO L226 Difference]: Without dead ends: 4419 [2021-11-09 08:30:32,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-11-09 08:30:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 2801. [2021-11-09 08:30:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2009 states have (on average 1.947237431557989) internal successors, (3912), 2780 states have internal predecessors, (3912), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:30:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3953 transitions. [2021-11-09 08:30:32,712 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3953 transitions. Word has length 31 [2021-11-09 08:30:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:32,713 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3953 transitions. [2021-11-09 08:30:32,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3953 transitions. [2021-11-09 08:30:32,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 08:30:32,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:32,715 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:32,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:32,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:32,930 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292017, now seen corresponding path program 1 times [2021-11-09 08:30:32,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:32,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147565766] [2021-11-09 08:30:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:32,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:32,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:32,934 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:32,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 08:30:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:33,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:33,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:33,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:30:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:33,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:34,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:34,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147565766] [2021-11-09 08:30:34,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147565766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:34,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:34,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:30:34,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228267833] [2021-11-09 08:30:34,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:34,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:34,100 INFO L87 Difference]: Start difference. First operand 2801 states and 3953 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:47,403 INFO L93 Difference]: Finished difference Result 3743 states and 4936 transitions. [2021-11-09 08:30:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:30:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-09 08:30:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:47,429 INFO L225 Difference]: With dead ends: 3743 [2021-11-09 08:30:47,429 INFO L226 Difference]: Without dead ends: 3743 [2021-11-09 08:30:47,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-11-09 08:30:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 2797. [2021-11-09 08:30:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2009 states have (on average 1.943255350920856) internal successors, (3904), 2776 states have internal predecessors, (3904), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:30:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3945 transitions. [2021-11-09 08:30:47,527 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3945 transitions. Word has length 31 [2021-11-09 08:30:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:47,529 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3945 transitions. [2021-11-09 08:30:47,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3945 transitions. [2021-11-09 08:30:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 08:30:47,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:47,536 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:47,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:47,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:47,756 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 931034612, now seen corresponding path program 1 times [2021-11-09 08:30:47,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:47,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051089086] [2021-11-09 08:30:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:47,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:47,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:47,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 08:30:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:48,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:48,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:48,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:48,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:48,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051089086] [2021-11-09 08:30:48,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051089086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:48,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:48,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:30:48,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394413270] [2021-11-09 08:30:48,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:48,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:48,438 INFO L87 Difference]: Start difference. First operand 2797 states and 3945 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:48,516 INFO L93 Difference]: Finished difference Result 2785 states and 3925 transitions. [2021-11-09 08:30:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:48,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 46 [2021-11-09 08:30:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:48,534 INFO L225 Difference]: With dead ends: 2785 [2021-11-09 08:30:48,534 INFO L226 Difference]: Without dead ends: 2785 [2021-11-09 08:30:48,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-09 08:30:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2021-11-09 08:30:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 1997 states have (on average 1.944917376064096) internal successors, (3884), 2764 states have internal predecessors, (3884), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:30:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3925 transitions. [2021-11-09 08:30:48,597 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3925 transitions. Word has length 46 [2021-11-09 08:30:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:48,597 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 3925 transitions. [2021-11-09 08:30:48,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3925 transitions. [2021-11-09 08:30:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 08:30:48,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:48,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:48,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:48,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:48,816 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1498564056, now seen corresponding path program 1 times [2021-11-09 08:30:48,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:48,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276358267] [2021-11-09 08:30:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:48,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:48,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:48,820 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:48,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 08:30:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:49,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:49,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:49,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:50,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:50,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276358267] [2021-11-09 08:30:50,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276358267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:50,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:50,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:30:50,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600110535] [2021-11-09 08:30:50,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:50,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:50,284 INFO L87 Difference]: Start difference. First operand 2785 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:50,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:50,560 INFO L93 Difference]: Finished difference Result 2974 states and 3960 transitions. [2021-11-09 08:30:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 54 [2021-11-09 08:30:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:50,577 INFO L225 Difference]: With dead ends: 2974 [2021-11-09 08:30:50,577 INFO L226 Difference]: Without dead ends: 2974 [2021-11-09 08:30:50,577 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-11-09 08:30:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2601. [2021-11-09 08:30:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 1813 states have (on average 1.9464975179260893) internal successors, (3529), 2580 states have internal predecessors, (3529), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-09 08:30:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3570 transitions. [2021-11-09 08:30:50,638 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3570 transitions. Word has length 54 [2021-11-09 08:30:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:50,639 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3570 transitions. [2021-11-09 08:30:50,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3570 transitions. [2021-11-09 08:30:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 08:30:50,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:50,641 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:50,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:50,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:50,855 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:30:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1939122981, now seen corresponding path program 1 times [2021-11-09 08:30:50,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:50,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468174179] [2021-11-09 08:30:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:50,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:50,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:50,858 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:50,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 08:30:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:51,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:51,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:51,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:30:51,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:30:52,225 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 08:30:52,225 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 28 treesize of output 30 [2021-11-09 08:30:52,236 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 08:30:52,236 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 27 treesize of output 23 [2021-11-09 08:30:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:52,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:57,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:57,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468174179] [2021-11-09 08:30:57,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468174179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:57,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:57,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:30:57,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540796062] [2021-11-09 08:30:57,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:57,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:57,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 08:30:57,327 INFO L87 Difference]: Start difference. First operand 2601 states and 3570 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:31:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:22,799 INFO L93 Difference]: Finished difference Result 4221 states and 5706 transitions. [2021-11-09 08:31:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:31:22,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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 57 [2021-11-09 08:31:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:22,819 INFO L225 Difference]: With dead ends: 4221 [2021-11-09 08:31:22,820 INFO L226 Difference]: Without dead ends: 4221 [2021-11-09 08:31:22,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 08:31:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-11-09 08:31:22,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 2741. [2021-11-09 08:31:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1991 states have (on average 1.9010547463586138) internal successors, (3785), 2714 states have internal predecessors, (3785), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 08:31:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3838 transitions. [2021-11-09 08:31:22,897 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3838 transitions. Word has length 57 [2021-11-09 08:31:22,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:22,898 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3838 transitions. [2021-11-09 08:31:22,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:31:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3838 transitions. [2021-11-09 08:31:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:31:22,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:22,900 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:22,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:23,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:23,115 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:31:23,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669755, now seen corresponding path program 1 times [2021-11-09 08:31:23,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:23,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451318639] [2021-11-09 08:31:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:23,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:23,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:23,118 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:23,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 08:31:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:23,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:31:23,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:23,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:31:23,762 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 [2021-11-09 08:31:23,811 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 [2021-11-09 08:31:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:23,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:23,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:23,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451318639] [2021-11-09 08:31:23,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451318639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:23,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:23,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:31:23,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653646894] [2021-11-09 08:31:23,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:31:23,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:23,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:31:23,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:31:23,982 INFO L87 Difference]: Start difference. First operand 2741 states and 3838 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:31:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:31,570 INFO L93 Difference]: Finished difference Result 2740 states and 3836 transitions. [2021-11-09 08:31:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:31:31,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 62 [2021-11-09 08:31:31,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:31,578 INFO L225 Difference]: With dead ends: 2740 [2021-11-09 08:31:31,578 INFO L226 Difference]: Without dead ends: 2740 [2021-11-09 08:31:31,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:31:31,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-11-09 08:31:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2740. [2021-11-09 08:31:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 1991 states have (on average 1.9000502260170768) internal successors, (3783), 2713 states have internal predecessors, (3783), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 08:31:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3836 transitions. [2021-11-09 08:31:31,627 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3836 transitions. Word has length 62 [2021-11-09 08:31:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:31,627 INFO L470 AbstractCegarLoop]: Abstraction has 2740 states and 3836 transitions. [2021-11-09 08:31:31,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:31:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3836 transitions. [2021-11-09 08:31:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:31:31,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:31,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:31,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:31,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:31,844 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:31:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669756, now seen corresponding path program 1 times [2021-11-09 08:31:31,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:31,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919393325] [2021-11-09 08:31:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:31,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:31,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:31,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:31,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 08:31:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:32,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:31:32,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:32,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:31:32,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 08:31:32,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-09 08:31:32,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-09 08:31:32,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 08:31:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:32,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:33,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:33,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919393325] [2021-11-09 08:31:33,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919393325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:33,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:33,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 08:31:33,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357968573] [2021-11-09 08:31:33,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:31:33,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:31:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:31:33,129 INFO L87 Difference]: Start difference. First operand 2740 states and 3836 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:31:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:49,725 INFO L93 Difference]: Finished difference Result 2739 states and 3834 transitions. [2021-11-09 08:31:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:31:49,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 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 62 [2021-11-09 08:31:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:49,732 INFO L225 Difference]: With dead ends: 2739 [2021-11-09 08:31:49,733 INFO L226 Difference]: Without dead ends: 2739 [2021-11-09 08:31:49,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:31:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-11-09 08:31:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-11-09 08:31:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1989 states have (on average 1.9009552538964303) internal successors, (3781), 2712 states have internal predecessors, (3781), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 08:31:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3834 transitions. [2021-11-09 08:31:49,796 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3834 transitions. Word has length 62 [2021-11-09 08:31:49,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:49,796 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3834 transitions. [2021-11-09 08:31:49,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:31:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3834 transitions. [2021-11-09 08:31:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 08:31:49,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:49,797 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:49,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:50,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:50,011 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:31:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1507172066, now seen corresponding path program 1 times [2021-11-09 08:31:50,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:50,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29456095] [2021-11-09 08:31:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:50,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:50,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:50,014 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:50,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 08:31:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:50,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:31:50,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:50,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:51,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:51,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29456095] [2021-11-09 08:31:51,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29456095] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:51,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:51,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:31:51,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395586855] [2021-11-09 08:31:51,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:31:51,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:51,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:31:51,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:31:51,069 INFO L87 Difference]: Start difference. First operand 2739 states and 3834 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:31:51,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:51,272 INFO L93 Difference]: Finished difference Result 2749 states and 3852 transitions. [2021-11-09 08:31:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:31:51,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 70 [2021-11-09 08:31:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:51,285 INFO L225 Difference]: With dead ends: 2749 [2021-11-09 08:31:51,285 INFO L226 Difference]: Without dead ends: 2749 [2021-11-09 08:31:51,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:31:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-09 08:31:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-09 08:31:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1997 states have (on average 1.899349023535303) internal successors, (3793), 2721 states have internal predecessors, (3793), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 08:31:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3852 transitions. [2021-11-09 08:31:51,337 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3852 transitions. Word has length 70 [2021-11-09 08:31:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:51,338 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3852 transitions. [2021-11-09 08:31:51,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:31:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3852 transitions. [2021-11-09 08:31:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 08:31:51,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:51,339 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:51,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:51,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:51,554 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:31:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1329602274, now seen corresponding path program 1 times [2021-11-09 08:31:51,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:51,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4896499] [2021-11-09 08:31:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:51,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:51,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:51,555 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:51,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 08:31:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:52,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:31:52,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:52,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:52,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:52,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4896499] [2021-11-09 08:31:52,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4896499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:31:52,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:52,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 08:31:52,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438689878] [2021-11-09 08:31:52,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:31:52,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:31:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:31:52,570 INFO L87 Difference]: Start difference. First operand 2749 states and 3852 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:31:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:53,079 INFO L93 Difference]: Finished difference Result 2763 states and 3880 transitions. [2021-11-09 08:31:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:31:53,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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 72 [2021-11-09 08:31:53,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:53,089 INFO L225 Difference]: With dead ends: 2763 [2021-11-09 08:31:53,089 INFO L226 Difference]: Without dead ends: 2759 [2021-11-09 08:31:53,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:31:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2021-11-09 08:31:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2755. [2021-11-09 08:31:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2003 states have (on average 1.8976535197204194) internal successors, (3801), 2727 states have internal predecessors, (3801), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 08:31:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3860 transitions. [2021-11-09 08:31:53,157 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3860 transitions. Word has length 72 [2021-11-09 08:31:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:53,158 INFO L470 AbstractCegarLoop]: Abstraction has 2755 states and 3860 transitions. [2021-11-09 08:31:53,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:31:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3860 transitions. [2021-11-09 08:31:53,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 08:31:53,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:53,159 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:53,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:53,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:53,378 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:31:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash -801825054, now seen corresponding path program 2 times [2021-11-09 08:31:53,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:53,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668070805] [2021-11-09 08:31:53,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:31:53,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:53,381 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:53,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 08:31:54,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:31:54,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:54,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:31:54,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:54,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:55,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:55,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668070805] [2021-11-09 08:31:55,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668070805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:31:55,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:55,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 08:31:55,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131445145] [2021-11-09 08:31:55,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:31:55,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:31:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:31:55,162 INFO L87 Difference]: Start difference. First operand 2755 states and 3860 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:31:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:56,836 INFO L93 Difference]: Finished difference Result 2783 states and 3928 transitions. [2021-11-09 08:31:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 08:31:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 76 [2021-11-09 08:31:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:56,846 INFO L225 Difference]: With dead ends: 2783 [2021-11-09 08:31:56,846 INFO L226 Difference]: Without dead ends: 2779 [2021-11-09 08:31:56,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 08:31:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-11-09 08:31:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2767. [2021-11-09 08:31:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2015 states have (on average 1.8942928039702234) internal successors, (3817), 2739 states have internal predecessors, (3817), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 08:31:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3876 transitions. [2021-11-09 08:31:56,896 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3876 transitions. Word has length 76 [2021-11-09 08:31:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:56,896 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 3876 transitions. [2021-11-09 08:31:56,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:31:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3876 transitions. [2021-11-09 08:31:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 08:31:56,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:56,898 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:56,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:57,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:57,111 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:31:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1969283358, now seen corresponding path program 3 times [2021-11-09 08:31:57,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:57,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012841810] [2021-11-09 08:31:57,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:31:57,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:57,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:57,114 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:57,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 08:31:58,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 08:31:58,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:58,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 08:31:58,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:58,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:32:00,897 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:00,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:32:00,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012841810] [2021-11-09 08:32:00,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012841810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:32:00,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:00,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 08:32:00,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654604683] [2021-11-09 08:32:00,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 08:32:00,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:32:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 08:32:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:32:00,901 INFO L87 Difference]: Start difference. First operand 2767 states and 3876 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:32:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:10,958 INFO L93 Difference]: Finished difference Result 2823 states and 4060 transitions. [2021-11-09 08:32:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 08:32:10,958 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 84 [2021-11-09 08:32:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:10,966 INFO L225 Difference]: With dead ends: 2823 [2021-11-09 08:32:10,966 INFO L226 Difference]: Without dead ends: 2817 [2021-11-09 08:32:10,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 08:32:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-11-09 08:32:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2791. [2021-11-09 08:32:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2039 states have (on average 1.8871996076508093) internal successors, (3848), 2763 states have internal predecessors, (3848), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 08:32:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3907 transitions. [2021-11-09 08:32:11,023 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3907 transitions. Word has length 84 [2021-11-09 08:32:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:11,023 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3907 transitions. [2021-11-09 08:32:11,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:32:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3907 transitions. [2021-11-09 08:32:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 08:32:11,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:11,025 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:11,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 08:32:11,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:32:11,239 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:32:11,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash -512549150, now seen corresponding path program 4 times [2021-11-09 08:32:11,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:32:11,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676406948] [2021-11-09 08:32:11,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:32:11,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:32:11,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:32:11,242 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:32:11,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 08:32:11,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:32:11,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:12,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 08:32:12,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:13,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:32:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:17,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:32:17,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676406948] [2021-11-09 08:32:17,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676406948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:32:17,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:32:17,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 08:32:17,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313459190] [2021-11-09 08:32:17,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 08:32:17,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:32:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 08:32:17,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 08:32:17,968 INFO L87 Difference]: Start difference. First operand 2791 states and 3907 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:32:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:34,931 INFO L93 Difference]: Finished difference Result 2883 states and 4172 transitions. [2021-11-09 08:32:34,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 08:32:34,931 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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 100 [2021-11-09 08:32:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:34,939 INFO L225 Difference]: With dead ends: 2883 [2021-11-09 08:32:34,939 INFO L226 Difference]: Without dead ends: 2879 [2021-11-09 08:32:34,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 08:32:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-11-09 08:32:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2821. [2021-11-09 08:32:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2069 states have (on average 1.8820686321894635) internal successors, (3894), 2793 states have internal predecessors, (3894), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-09 08:32:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3953 transitions. [2021-11-09 08:32:35,012 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3953 transitions. Word has length 100 [2021-11-09 08:32:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:35,012 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 3953 transitions. [2021-11-09 08:32:35,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 08:32:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3953 transitions. [2021-11-09 08:32:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 08:32:35,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:35,014 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:35,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 08:32:35,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:32:35,230 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-09 08:32:35,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1331912990, now seen corresponding path program 5 times [2021-11-09 08:32:35,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:32:35,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952136286] [2021-11-09 08:32:35,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:32:35,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:32:35,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:32:35,233 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:32:35,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6186c1df-bd6c-4dea-8291-035813f76942/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 08:32:37,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 08:32:37,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:37,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 08:32:37,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:37,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:32:37,339 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 08:32:37,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-09 08:32:37,406 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 [2021-11-09 08:32:37,660 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 42 treesize of output 30