./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:18:13,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:18:13,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:18:13,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:18:13,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:18:13,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:18:13,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:18:13,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:18:13,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:18:13,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:18:13,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:18:13,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:18:13,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:18:13,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:18:13,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:18:13,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:18:13,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:18:13,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:18:13,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:18:13,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:18:13,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:18:13,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:18:13,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:18:13,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:18:13,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:18:13,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:18:13,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:18:13,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:18:13,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:18:13,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:18:13,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:18:13,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:18:13,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:18:13,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:18:13,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:18:13,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:18:13,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:18:13,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:18:13,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:18:13,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:18:13,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:18:13,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:18:13,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:18:13,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:18:13,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:18:13,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:18:13,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:18:13,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:18:13,358 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:18:13,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:18:13,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:18:13,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:18:13,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:18:13,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:18:13,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:18:13,360 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:18:13,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:18:13,361 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:18:13,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:18:13,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:18:13,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:18:13,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:18:13,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:18:13,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:18:13,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:18:13,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:18:13,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:18:13,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:18:13,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:18:13,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:18:13,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:18:13,366 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_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-02 22:18:13,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:18:13,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:18:13,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:18:13,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:18:13,638 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:18:13,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-02 22:18:13,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/5fae12ce5/cf73e8220eb0407cad65d9335d0c8fd1/FLAG4acd2d65e [2021-11-02 22:18:14,307 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:18:14,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-02 22:18:14,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/5fae12ce5/cf73e8220eb0407cad65d9335d0c8fd1/FLAG4acd2d65e [2021-11-02 22:18:14,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/5fae12ce5/cf73e8220eb0407cad65d9335d0c8fd1 [2021-11-02 22:18:14,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:18:14,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:18:14,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:18:14,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:18:14,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:18:14,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:18:14" (1/1) ... [2021-11-02 22:18:14,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4211a3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:14, skipping insertion in model container [2021-11-02 22:18:14,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:18:14" (1/1) ... [2021-11-02 22:18:14,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:18:14,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:18:15,087 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_f50f9d6f-cacd-4552-a844-ea70e405ebd6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-02 22:18:15,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:18:15,276 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-02 22:18:15,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b9310bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:15, skipping insertion in model container [2021-11-02 22:18:15,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:18:15,287 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:18:15,289 INFO L168 Benchmark]: Toolchain (without parser) took 737.58 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 48.7 MB in the beginning and 60.1 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:15,290 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:18:15,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.01 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 48.5 MB in the beginning and 60.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:18:15,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 735.01 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 48.5 MB in the beginning and 60.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:18:17,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:18:17,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:18:17,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:18:17,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:18:17,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:18:17,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:18:17,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:18:17,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:18:17,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:18:17,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:18:17,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:18:17,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:18:17,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:18:17,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:18:17,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:18:17,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:18:17,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:18:17,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:18:17,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:18:17,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:18:17,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:18:17,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:18:17,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:18:17,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:18:17,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:18:17,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:18:17,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:18:17,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:18:17,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:18:17,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:18:17,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:18:17,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:18:17,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:18:17,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:18:17,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:18:17,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:18:17,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:18:17,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:18:17,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:18:17,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:18:17,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:18:17,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:18:17,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:18:17,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:18:17,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:18:17,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:18:17,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:18:17,743 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:18:17,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:18:17,743 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:18:17,743 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:18:17,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:18:17,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:18:17,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:18:17,745 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:18:17,746 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:18:17,746 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:18:17,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:18:17,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:18:17,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:18:17,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:18:17,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:18:17,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:18:17,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:18:17,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:18:17,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:18:17,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:18:17,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:18:17,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:18:17,749 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:18:17,749 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:18:17,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:18:17,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:18:17,750 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_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-02 22:18:18,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:18:18,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:18:18,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:18:18,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:18:18,202 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:18:18,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-02 22:18:18,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/b72c4872d/2dea2cfbaf6a49fda8d1f1a6277f0fa3/FLAGe2927ad86 [2021-11-02 22:18:18,941 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:18:18,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-02 22:18:18,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/b72c4872d/2dea2cfbaf6a49fda8d1f1a6277f0fa3/FLAGe2927ad86 [2021-11-02 22:18:19,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/data/b72c4872d/2dea2cfbaf6a49fda8d1f1a6277f0fa3 [2021-11-02 22:18:19,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:18:19,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:18:19,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:18:19,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:18:19,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:18:19,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:18:19" (1/1) ... [2021-11-02 22:18:19,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7984f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:19, skipping insertion in model container [2021-11-02 22:18:19,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:18:19" (1/1) ... [2021-11-02 22:18:19,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:18:19,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:18:19,765 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_f50f9d6f-cacd-4552-a844-ea70e405ebd6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-02 22:18:20,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:18:20,022 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:18:20,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:18:20,055 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_f50f9d6f-cacd-4552-a844-ea70e405ebd6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-02 22:18:20,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:18:20,135 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:18:20,162 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_f50f9d6f-cacd-4552-a844-ea70e405ebd6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-02 22:18:20,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:18:20,296 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:18:20,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20 WrapperNode [2021-11-02 22:18:20,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:18:20,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:18:20,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:18:20,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:18:20,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:18:20,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:18:20,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:18:20,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:18:20,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (1/1) ... [2021-11-02 22:18:20,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:18:20,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:18:20,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:18:20,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:18:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:18:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:18:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:18:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:18:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:18:20,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:18:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:18:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:18:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:18:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:18:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:18:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:18:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:18:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:18:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:18:20,625 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:18:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:18:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:18:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:18:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:18:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:18:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:18:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:18:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:18:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:18:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:18:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:18:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:18:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:18:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:18:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:18:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:18:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:18:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:18:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:18:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:18:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:18:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:18:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:18:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:18:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:18:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:18:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:18:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:18:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:18:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:18:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:18:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:18:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:18:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:18:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:18:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:18:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:18:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:18:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:18:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:18:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:18:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:18:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:18:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:18:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:18:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:18:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:18:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:18:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:18:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:18:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:18:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:18:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:18:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:18:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:18:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:18:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:18:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:18:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:18:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:18:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:18:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:18:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:18:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:18:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:18:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:18:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:18:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:18:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:18:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:18:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:18:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:18:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:18:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:18:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:18:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:18:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:18:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:18:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:18:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:18:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:18:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:18:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:18:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:18:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:18:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:18:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:18:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:18:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:18:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:18:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:18:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:18:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:18:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:18:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:18:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:18:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:18:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:18:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:18:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:18:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:18:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:18:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:18:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:18:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:18:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:18:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:18:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:18:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:18:20,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:18:21,297 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:18:26,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:18:26,558 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-02 22:18:26,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:18:26 BoogieIcfgContainer [2021-11-02 22:18:26,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:18:26,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:18:26,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:18:26,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:18:26,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:18:19" (1/3) ... [2021-11-02 22:18:26,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1ffa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:18:26, skipping insertion in model container [2021-11-02 22:18:26,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:18:20" (2/3) ... [2021-11-02 22:18:26,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1ffa2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:18:26, skipping insertion in model container [2021-11-02 22:18:26,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:18:26" (3/3) ... [2021-11-02 22:18:26,579 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-1.i [2021-11-02 22:18:26,584 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:18:26,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-02 22:18:26,665 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:18:26,672 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:18:26,673 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-02 22:18:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-02 22:18:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:18:26,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:26,732 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:26,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:26,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1382358025, now seen corresponding path program 1 times [2021-11-02 22:18:26,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:26,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573521924] [2021-11-02 22:18:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:26,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:26,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:26,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:26,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:18:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:27,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 22:18:27,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:27,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:27,157 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:27,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573521924] [2021-11-02 22:18:27,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573521924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:27,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:27,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:18:27,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648998025] [2021-11-02 22:18:27,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:18:27,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:18:27,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:18:27,207 INFO L87 Difference]: Start difference. First operand has 1282 states, 615 states have (on average 2.2536585365853656) internal successors, (1386), 1267 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) 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) [2021-11-02 22:18:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:27,315 INFO L93 Difference]: Finished difference Result 1264 states and 1338 transitions. [2021-11-02 22:18:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:18:27,321 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 [2021-11-02 22:18:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:27,351 INFO L225 Difference]: With dead ends: 1264 [2021-11-02 22:18:27,352 INFO L226 Difference]: Without dead ends: 1261 [2021-11-02 22:18:27,353 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 [2021-11-02 22:18:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-11-02 22:18:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2021-11-02 22:18:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 606 states have (on average 2.1419141914191417) internal successors, (1298), 1247 states have internal predecessors, (1298), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:18:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1335 transitions. [2021-11-02 22:18:27,485 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1335 transitions. Word has length 9 [2021-11-02 22:18:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:27,486 INFO L470 AbstractCegarLoop]: Abstraction has 1261 states and 1335 transitions. [2021-11-02 22:18:27,486 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) [2021-11-02 22:18:27,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1335 transitions. [2021-11-02 22:18:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:18:27,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:27,487 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:27,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:27,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:27,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:27,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357963, now seen corresponding path program 1 times [2021-11-02 22:18:27,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:27,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102455878] [2021-11-02 22:18:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:27,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:27,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:27,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:27,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:18:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:18:27,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:27,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:18:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:28,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:28,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:28,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102455878] [2021-11-02 22:18:28,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102455878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:28,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:28,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:18:28,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906723134] [2021-11-02 22:18:28,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:18:28,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:18:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:18:28,049 INFO L87 Difference]: Start difference. First operand 1261 states and 1335 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) [2021-11-02 22:18:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:30,756 INFO L93 Difference]: Finished difference Result 1298 states and 1385 transitions. [2021-11-02 22:18:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:18:30,757 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 [2021-11-02 22:18:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:30,763 INFO L225 Difference]: With dead ends: 1298 [2021-11-02 22:18:30,763 INFO L226 Difference]: Without dead ends: 1298 [2021-11-02 22:18:30,763 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 [2021-11-02 22:18:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-02 22:18:30,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1244. [2021-11-02 22:18:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 682 states have (on average 1.964809384164223) internal successors, (1340), 1230 states have internal predecessors, (1340), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:18:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1377 transitions. [2021-11-02 22:18:30,801 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1377 transitions. Word has length 9 [2021-11-02 22:18:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:30,801 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1377 transitions. [2021-11-02 22:18:30,802 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) [2021-11-02 22:18:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1377 transitions. [2021-11-02 22:18:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:18:30,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:30,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:30,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:31,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:31,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:31,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:31,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1382357962, now seen corresponding path program 1 times [2021-11-02 22:18:31,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:31,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589935228] [2021-11-02 22:18:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:31,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:31,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:31,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:31,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:18:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:31,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:18:31,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:31,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:18:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:31,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:31,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:31,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589935228] [2021-11-02 22:18:31,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589935228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:31,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:31,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:18:31,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471005338] [2021-11-02 22:18:31,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:18:31,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:18:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:18:31,353 INFO L87 Difference]: Start difference. First operand 1244 states and 1377 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) [2021-11-02 22:18:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:36,619 INFO L93 Difference]: Finished difference Result 1598 states and 1752 transitions. [2021-11-02 22:18:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:18:36,620 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 [2021-11-02 22:18:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:36,628 INFO L225 Difference]: With dead ends: 1598 [2021-11-02 22:18:36,629 INFO L226 Difference]: Without dead ends: 1598 [2021-11-02 22:18:36,629 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 [2021-11-02 22:18:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-11-02 22:18:36,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1400. [2021-11-02 22:18:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 848 states have (on average 1.9410377358490567) internal successors, (1646), 1386 states have internal predecessors, (1646), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 22:18:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1683 transitions. [2021-11-02 22:18:36,671 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1683 transitions. Word has length 9 [2021-11-02 22:18:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:36,671 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 1683 transitions. [2021-11-02 22:18:36,671 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) [2021-11-02 22:18:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1683 transitions. [2021-11-02 22:18:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:18:36,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:36,672 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:36,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-02 22:18:36,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:36,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:36,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash 98263510, now seen corresponding path program 1 times [2021-11-02 22:18:36,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:36,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240460252] [2021-11-02 22:18:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:36,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:36,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:36,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:36,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:18:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:37,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:18:37,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:37,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:37,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:37,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240460252] [2021-11-02 22:18:37,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240460252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:37,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:37,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:18:37,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330150145] [2021-11-02 22:18:37,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:18:37,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:18:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:18:37,164 INFO L87 Difference]: Start difference. First operand 1400 states and 1683 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) [2021-11-02 22:18:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:37,329 INFO L93 Difference]: Finished difference Result 2745 states and 3291 transitions. [2021-11-02 22:18:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:18:37,330 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 [2021-11-02 22:18:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:37,345 INFO L225 Difference]: With dead ends: 2745 [2021-11-02 22:18:37,345 INFO L226 Difference]: Without dead ends: 2745 [2021-11-02 22:18:37,346 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 [2021-11-02 22:18:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2021-11-02 22:18:37,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2216. [2021-11-02 22:18:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1664 states have (on average 1.9483173076923077) internal successors, (3242), 2196 states have internal predecessors, (3242), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:18:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3291 transitions. [2021-11-02 22:18:37,426 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3291 transitions. Word has length 10 [2021-11-02 22:18:37,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:37,426 INFO L470 AbstractCegarLoop]: Abstraction has 2216 states and 3291 transitions. [2021-11-02 22:18:37,427 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) [2021-11-02 22:18:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3291 transitions. [2021-11-02 22:18:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:18:37,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:37,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:37,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:37,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:37,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1364426047, now seen corresponding path program 1 times [2021-11-02 22:18:37,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:37,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144471668] [2021-11-02 22:18:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:37,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:37,643 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:37,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:18:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:37,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:18:37,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:37,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:37,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:37,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144471668] [2021-11-02 22:18:37,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144471668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:37,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:37,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:18:37,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909151531] [2021-11-02 22:18:37,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:18:37,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:37,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:18:37,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:18:37,985 INFO L87 Difference]: Start difference. First operand 2216 states and 3291 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) [2021-11-02 22:18:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:38,039 INFO L93 Difference]: Finished difference Result 2156 states and 3205 transitions. [2021-11-02 22:18:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:18:38,040 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 [2021-11-02 22:18:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:38,056 INFO L225 Difference]: With dead ends: 2156 [2021-11-02 22:18:38,056 INFO L226 Difference]: Without dead ends: 2156 [2021-11-02 22:18:38,057 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 [2021-11-02 22:18:38,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-11-02 22:18:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2156. [2021-11-02 22:18:38,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1628 states have (on average 1.9385749385749387) internal successors, (3156), 2136 states have internal predecessors, (3156), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:18:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3205 transitions. [2021-11-02 22:18:38,131 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3205 transitions. Word has length 15 [2021-11-02 22:18:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:38,132 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3205 transitions. [2021-11-02 22:18:38,132 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) [2021-11-02 22:18:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3205 transitions. [2021-11-02 22:18:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:18:38,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:38,133 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:18:38,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:38,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:38,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:38,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1248405209, now seen corresponding path program 1 times [2021-11-02 22:18:38,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:38,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398925080] [2021-11-02 22:18:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:38,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:38,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:38,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:38,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:18:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:38,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:18:38,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:38,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:38,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:38,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398925080] [2021-11-02 22:18:38,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398925080] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:38,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:38,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:18:38,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232948629] [2021-11-02 22:18:38,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:18:38,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:38,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:18:38,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:18:38,721 INFO L87 Difference]: Start difference. First operand 2156 states and 3205 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) [2021-11-02 22:18:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:38,825 INFO L93 Difference]: Finished difference Result 2128 states and 3149 transitions. [2021-11-02 22:18:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:18:38,826 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 [2021-11-02 22:18:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:38,839 INFO L225 Difference]: With dead ends: 2128 [2021-11-02 22:18:38,839 INFO L226 Difference]: Without dead ends: 2128 [2021-11-02 22:18:38,839 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 [2021-11-02 22:18:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-02 22:18:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2126. [2021-11-02 22:18:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 1612 states have (on average 1.9218362282878412) internal successors, (3098), 2106 states have internal predecessors, (3098), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:18:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3147 transitions. [2021-11-02 22:18:38,936 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3147 transitions. Word has length 17 [2021-11-02 22:18:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:38,937 INFO L470 AbstractCegarLoop]: Abstraction has 2126 states and 3147 transitions. [2021-11-02 22:18:38,937 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) [2021-11-02 22:18:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3147 transitions. [2021-11-02 22:18:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:18:38,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:38,939 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] [2021-11-02 22:18:38,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:39,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:39,152 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711161, now seen corresponding path program 1 times [2021-11-02 22:18:39,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:39,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759687490] [2021-11-02 22:18:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:39,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:39,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:39,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:18:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:39,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:18:39,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:39,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:18:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:39,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:39,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:39,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759687490] [2021-11-02 22:18:39,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759687490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:39,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:39,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:18:39,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964871733] [2021-11-02 22:18:39,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:18:39,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:39,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:18:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:18:39,678 INFO L87 Difference]: Start difference. First operand 2126 states and 3147 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) [2021-11-02 22:18:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:43,284 INFO L93 Difference]: Finished difference Result 2754 states and 3940 transitions. [2021-11-02 22:18:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:18:43,284 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 [2021-11-02 22:18:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:43,301 INFO L225 Difference]: With dead ends: 2754 [2021-11-02 22:18:43,302 INFO L226 Difference]: Without dead ends: 2754 [2021-11-02 22:18:43,302 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 [2021-11-02 22:18:43,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-02 22:18:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2122. [2021-11-02 22:18:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1612 states have (on average 1.9168734491315136) internal successors, (3090), 2102 states have internal predecessors, (3090), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:18:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3139 transitions. [2021-11-02 22:18:43,373 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3139 transitions. Word has length 31 [2021-11-02 22:18:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:43,374 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3139 transitions. [2021-11-02 22:18:43,374 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) [2021-11-02 22:18:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3139 transitions. [2021-11-02 22:18:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:18:43,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:43,376 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] [2021-11-02 22:18:43,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-02 22:18:43,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:43,587 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1848711160, now seen corresponding path program 1 times [2021-11-02 22:18:43,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:43,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955866378] [2021-11-02 22:18:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:43,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:43,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:43,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:18:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:43,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:18:43,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:43,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:18:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:44,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:44,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:44,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955866378] [2021-11-02 22:18:44,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955866378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:44,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:44,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:18:44,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834281730] [2021-11-02 22:18:44,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:18:44,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:44,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:18:44,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:18:44,662 INFO L87 Difference]: Start difference. First operand 2122 states and 3139 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) [2021-11-02 22:18:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:53,163 INFO L93 Difference]: Finished difference Result 2375 states and 3288 transitions. [2021-11-02 22:18:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:18:53,164 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 [2021-11-02 22:18:53,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:53,177 INFO L225 Difference]: With dead ends: 2375 [2021-11-02 22:18:53,177 INFO L226 Difference]: Without dead ends: 2375 [2021-11-02 22:18:53,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:18:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-11-02 22:18:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2118. [2021-11-02 22:18:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1612 states have (on average 1.911910669975186) internal successors, (3082), 2098 states have internal predecessors, (3082), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:18:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 3131 transitions. [2021-11-02 22:18:53,235 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 3131 transitions. Word has length 31 [2021-11-02 22:18:53,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:53,236 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 3131 transitions. [2021-11-02 22:18:53,236 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) [2021-11-02 22:18:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 3131 transitions. [2021-11-02 22:18:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:18:53,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:53,238 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] [2021-11-02 22:18:53,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:53,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:53,451 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:53,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash -189672101, now seen corresponding path program 1 times [2021-11-02 22:18:53,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:53,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75842879] [2021-11-02 22:18:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:53,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:53,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:53,454 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:53,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:18:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:53,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:18:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:53,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:54,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:54,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75842879] [2021-11-02 22:18:54,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75842879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:54,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:54,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:18:54,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58678421] [2021-11-02 22:18:54,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:18:54,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:18:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:18:54,109 INFO L87 Difference]: Start difference. First operand 2118 states and 3131 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) [2021-11-02 22:18:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:54,166 INFO L93 Difference]: Finished difference Result 2106 states and 3111 transitions. [2021-11-02 22:18:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:18:54,167 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 [2021-11-02 22:18:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:54,182 INFO L225 Difference]: With dead ends: 2106 [2021-11-02 22:18:54,182 INFO L226 Difference]: Without dead ends: 2106 [2021-11-02 22:18:54,183 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 [2021-11-02 22:18:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-11-02 22:18:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-11-02 22:18:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1600 states have (on average 1.91375) internal successors, (3062), 2086 states have internal predecessors, (3062), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:18:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3111 transitions. [2021-11-02 22:18:54,230 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3111 transitions. Word has length 46 [2021-11-02 22:18:54,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:54,231 INFO L470 AbstractCegarLoop]: Abstraction has 2106 states and 3111 transitions. [2021-11-02 22:18:54,231 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) [2021-11-02 22:18:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3111 transitions. [2021-11-02 22:18:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:18:54,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:54,240 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] [2021-11-02 22:18:54,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:54,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:54,453 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:54,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 568275343, now seen corresponding path program 1 times [2021-11-02 22:18:54,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:54,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900333193] [2021-11-02 22:18:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:54,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:54,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:54,455 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:54,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:18:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:54,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:18:54,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:55,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:55,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:55,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900333193] [2021-11-02 22:18:55,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900333193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:18:55,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:18:55,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:18:55,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008277003] [2021-11-02 22:18:55,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:18:55,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:55,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:18:55,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:18:55,696 INFO L87 Difference]: Start difference. First operand 2106 states and 3111 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) [2021-11-02 22:18:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:18:55,782 INFO L93 Difference]: Finished difference Result 1922 states and 2756 transitions. [2021-11-02 22:18:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:18:55,783 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 [2021-11-02 22:18:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:18:55,793 INFO L225 Difference]: With dead ends: 1922 [2021-11-02 22:18:55,794 INFO L226 Difference]: Without dead ends: 1922 [2021-11-02 22:18:55,794 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 [2021-11-02 22:18:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-02 22:18:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1922. [2021-11-02 22:18:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1416 states have (on average 1.911723163841808) internal successors, (2707), 1902 states have internal predecessors, (2707), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:18:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2756 transitions. [2021-11-02 22:18:55,837 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2756 transitions. Word has length 54 [2021-11-02 22:18:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:18:55,837 INFO L470 AbstractCegarLoop]: Abstraction has 1922 states and 2756 transitions. [2021-11-02 22:18:55,838 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) [2021-11-02 22:18:55,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2756 transitions. [2021-11-02 22:18:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:18:55,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:18:55,839 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] [2021-11-02 22:18:55,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:18:56,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:18:56,059 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:18:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:18:56,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1377713038, now seen corresponding path program 1 times [2021-11-02 22:18:56,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:18:56,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622833786] [2021-11-02 22:18:56,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:18:56,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:18:56,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:18:56,077 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:18:56,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:18:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:18:56,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:18:56,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:18:56,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:18:56,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:18:57,305 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:18:57,306 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 [2021-11-02 22:18:57,311 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:18:57,311 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 [2021-11-02 22:18:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:18:57,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:19:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:02,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:19:02,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622833786] [2021-11-02 22:19:02,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622833786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:19:02,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:19:02,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:19:02,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659772521] [2021-11-02 22:19:02,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:19:02,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:19:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:19:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:19:02,122 INFO L87 Difference]: Start difference. First operand 1922 states and 2756 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) [2021-11-02 22:19:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:19:21,115 INFO L93 Difference]: Finished difference Result 2570 states and 3536 transitions. [2021-11-02 22:19:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:19:21,116 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 [2021-11-02 22:19:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:19:21,130 INFO L225 Difference]: With dead ends: 2570 [2021-11-02 22:19:21,130 INFO L226 Difference]: Without dead ends: 2570 [2021-11-02 22:19:21,131 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 [2021-11-02 22:19:21,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-11-02 22:19:21,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2062. [2021-11-02 22:19:21,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1594 states have (on average 1.858845671267252) internal successors, (2963), 2036 states have internal predecessors, (2963), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 22:19:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3024 transitions. [2021-11-02 22:19:21,188 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3024 transitions. Word has length 57 [2021-11-02 22:19:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:19:21,188 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 3024 transitions. [2021-11-02 22:19:21,188 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) [2021-11-02 22:19:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3024 transitions. [2021-11-02 22:19:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:19:21,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:19:21,190 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] [2021-11-02 22:19:21,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:19:21,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:19:21,405 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:19:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:19:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash 569746658, now seen corresponding path program 1 times [2021-11-02 22:19:21,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:19:21,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957207909] [2021-11-02 22:19:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:19:21,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:19:21,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:19:21,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:19:21,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:19:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:19:21,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:19:21,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:19:22,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:19:22,025 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 [2021-11-02 22:19:22,079 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 [2021-11-02 22:19:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:22,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:19:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:22,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:19:22,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957207909] [2021-11-02 22:19:22,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957207909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:19:22,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:19:22,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:19:22,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261152268] [2021-11-02 22:19:22,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:19:22,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:19:22,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:19:22,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:19:22,259 INFO L87 Difference]: Start difference. First operand 2062 states and 3024 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) [2021-11-02 22:19:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:19:26,302 INFO L93 Difference]: Finished difference Result 2061 states and 3022 transitions. [2021-11-02 22:19:26,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:19:26,303 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 [2021-11-02 22:19:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:19:26,314 INFO L225 Difference]: With dead ends: 2061 [2021-11-02 22:19:26,315 INFO L226 Difference]: Without dead ends: 2061 [2021-11-02 22:19:26,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:19:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-11-02 22:19:26,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2061. [2021-11-02 22:19:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1594 states have (on average 1.857590966122961) internal successors, (2961), 2035 states have internal predecessors, (2961), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 22:19:26,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3022 transitions. [2021-11-02 22:19:26,362 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3022 transitions. Word has length 62 [2021-11-02 22:19:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:19:26,362 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 3022 transitions. [2021-11-02 22:19:26,362 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) [2021-11-02 22:19:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3022 transitions. [2021-11-02 22:19:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:19:26,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:19:26,364 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] [2021-11-02 22:19:26,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:19:26,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:19:26,579 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:19:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:19:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash 569746659, now seen corresponding path program 1 times [2021-11-02 22:19:26,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:19:26,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097925683] [2021-11-02 22:19:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:19:26,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:19:26,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:19:26,581 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:19:26,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:19:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:19:27,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:19:27,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:19:27,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:19:27,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-02 22:19:27,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-02 22:19:27,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-02 22:19:27,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-02 22:19:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:27,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:19:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:27,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:19:27,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097925683] [2021-11-02 22:19:27,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097925683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:19:27,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:19:27,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:19:27,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361602853] [2021-11-02 22:19:27,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:19:27,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:19:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:19:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:19:27,700 INFO L87 Difference]: Start difference. First operand 2061 states and 3022 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) [2021-11-02 22:19:39,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:19:39,766 INFO L93 Difference]: Finished difference Result 2060 states and 3020 transitions. [2021-11-02 22:19:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:19:39,767 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 [2021-11-02 22:19:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:19:39,776 INFO L225 Difference]: With dead ends: 2060 [2021-11-02 22:19:39,777 INFO L226 Difference]: Without dead ends: 2060 [2021-11-02 22:19:39,777 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 [2021-11-02 22:19:39,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-11-02 22:19:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 2060. [2021-11-02 22:19:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1592 states have (on average 1.8586683417085428) internal successors, (2959), 2034 states have internal predecessors, (2959), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 22:19:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3020 transitions. [2021-11-02 22:19:39,852 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3020 transitions. Word has length 62 [2021-11-02 22:19:39,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:19:39,853 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 3020 transitions. [2021-11-02 22:19:39,853 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) [2021-11-02 22:19:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3020 transitions. [2021-11-02 22:19:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:19:39,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:19:39,854 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] [2021-11-02 22:19:39,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-02 22:19:40,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:19:40,070 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:19:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:19:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2036280663, now seen corresponding path program 1 times [2021-11-02 22:19:40,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:19:40,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335987578] [2021-11-02 22:19:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:19:40,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:19:40,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:19:40,073 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:19:40,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:19:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:19:40,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:19:40,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:19:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:40,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:19:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:41,113 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:19:41,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335987578] [2021-11-02 22:19:41,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335987578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:19:41,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:19:41,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:19:41,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264859104] [2021-11-02 22:19:41,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:19:41,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:19:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:19:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:19:41,116 INFO L87 Difference]: Start difference. First operand 2060 states and 3020 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) [2021-11-02 22:19:41,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:19:41,272 INFO L93 Difference]: Finished difference Result 2070 states and 3038 transitions. [2021-11-02 22:19:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:19:41,273 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 [2021-11-02 22:19:41,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:19:41,281 INFO L225 Difference]: With dead ends: 2070 [2021-11-02 22:19:41,282 INFO L226 Difference]: Without dead ends: 2070 [2021-11-02 22:19:41,282 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 [2021-11-02 22:19:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-11-02 22:19:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2070. [2021-11-02 22:19:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1600 states have (on average 1.856875) internal successors, (2971), 2043 states have internal predecessors, (2971), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:19:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3038 transitions. [2021-11-02 22:19:41,325 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3038 transitions. Word has length 70 [2021-11-02 22:19:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:19:41,326 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 3038 transitions. [2021-11-02 22:19:41,326 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) [2021-11-02 22:19:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3038 transitions. [2021-11-02 22:19:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:19:41,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:19:41,327 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] [2021-11-02 22:19:41,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-02 22:19:41,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:19:41,544 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:19:41,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:19:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1343773079, now seen corresponding path program 1 times [2021-11-02 22:19:41,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:19:41,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769106808] [2021-11-02 22:19:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:19:41,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:19:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:19:41,547 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:19:41,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:19:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:19:42,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:19:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:19:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:42,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:19:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:42,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:19:42,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769106808] [2021-11-02 22:19:42,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769106808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:19:42,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:19:42,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:19:42,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215723971] [2021-11-02 22:19:42,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:19:42,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:19:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:19:42,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:19:42,569 INFO L87 Difference]: Start difference. First operand 2070 states and 3038 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) [2021-11-02 22:19:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:19:43,292 INFO L93 Difference]: Finished difference Result 2084 states and 3066 transitions. [2021-11-02 22:19:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:19:43,293 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 [2021-11-02 22:19:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:19:43,306 INFO L225 Difference]: With dead ends: 2084 [2021-11-02 22:19:43,314 INFO L226 Difference]: Without dead ends: 2080 [2021-11-02 22:19:43,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:19:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-02 22:19:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2076. [2021-11-02 22:19:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 1606 states have (on average 1.8549190535491906) internal successors, (2979), 2049 states have internal predecessors, (2979), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:19:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3046 transitions. [2021-11-02 22:19:43,392 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3046 transitions. Word has length 72 [2021-11-02 22:19:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:19:43,393 INFO L470 AbstractCegarLoop]: Abstraction has 2076 states and 3046 transitions. [2021-11-02 22:19:43,394 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) [2021-11-02 22:19:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3046 transitions. [2021-11-02 22:19:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:19:43,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:19:43,404 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] [2021-11-02 22:19:43,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:19:43,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:19:43,620 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:19:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:19:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1627356649, now seen corresponding path program 2 times [2021-11-02 22:19:43,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:19:43,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366006008] [2021-11-02 22:19:43,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:19:43,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:19:43,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:19:43,623 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:19:43,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:19:44,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:19:44,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:19:44,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:19:44,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:19:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:44,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:19:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:45,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:19:45,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366006008] [2021-11-02 22:19:45,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366006008] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:19:45,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:19:45,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:19:45,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367123757] [2021-11-02 22:19:45,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:19:45,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:19:45,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:19:45,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:19:45,281 INFO L87 Difference]: Start difference. First operand 2076 states and 3046 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) [2021-11-02 22:19:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:19:47,331 INFO L93 Difference]: Finished difference Result 2104 states and 3114 transitions. [2021-11-02 22:19:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:19:47,332 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 [2021-11-02 22:19:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:19:47,342 INFO L225 Difference]: With dead ends: 2104 [2021-11-02 22:19:47,342 INFO L226 Difference]: Without dead ends: 2100 [2021-11-02 22:19:47,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:19:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-11-02 22:19:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2088. [2021-11-02 22:19:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1618 states have (on average 1.8510506798516688) internal successors, (2995), 2061 states have internal predecessors, (2995), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:19:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3062 transitions. [2021-11-02 22:19:47,429 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3062 transitions. Word has length 76 [2021-11-02 22:19:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:19:47,429 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 3062 transitions. [2021-11-02 22:19:47,429 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) [2021-11-02 22:19:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3062 transitions. [2021-11-02 22:19:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:19:47,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:19:47,431 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] [2021-11-02 22:19:47,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:19:47,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:19:47,646 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:19:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:19:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash -790106903, now seen corresponding path program 3 times [2021-11-02 22:19:47,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:19:47,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103913065] [2021-11-02 22:19:47,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:19:47,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:19:47,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:19:47,649 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:19:47,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:19:48,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:19:48,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:19:48,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:19:48,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:19:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:49,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:19:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:19:51,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:19:51,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103913065] [2021-11-02 22:19:51,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103913065] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:19:51,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:19:51,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:19:51,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272842878] [2021-11-02 22:19:51,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:19:51,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:19:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:19:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:19:51,227 INFO L87 Difference]: Start difference. First operand 2088 states and 3062 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) [2021-11-02 22:20:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:20:00,366 INFO L93 Difference]: Finished difference Result 2144 states and 3210 transitions. [2021-11-02 22:20:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:20:00,367 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 [2021-11-02 22:20:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:20:00,373 INFO L225 Difference]: With dead ends: 2144 [2021-11-02 22:20:00,373 INFO L226 Difference]: Without dead ends: 2140 [2021-11-02 22:20:00,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:20:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-11-02 22:20:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2112. [2021-11-02 22:20:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1642 states have (on average 1.8434835566382461) internal successors, (3027), 2085 states have internal predecessors, (3027), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:20:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3094 transitions. [2021-11-02 22:20:00,423 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3094 transitions. Word has length 84 [2021-11-02 22:20:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:20:00,423 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 3094 transitions. [2021-11-02 22:20:00,424 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) [2021-11-02 22:20:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3094 transitions. [2021-11-02 22:20:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:20:00,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:20:00,425 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] [2021-11-02 22:20:00,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:20:00,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:20:00,650 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:20:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:20:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash -870593815, now seen corresponding path program 4 times [2021-11-02 22:20:00,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:20:00,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437060890] [2021-11-02 22:20:00,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:20:00,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:20:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:20:00,652 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:20:00,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:20:01,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:20:01,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:20:01,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:20:01,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:20:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:20:02,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:20:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:20:08,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:20:08,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437060890] [2021-11-02 22:20:08,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437060890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:20:08,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:20:08,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:20:08,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884019616] [2021-11-02 22:20:08,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:20:08,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:20:08,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:20:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:20:08,314 INFO L87 Difference]: Start difference. First operand 2112 states and 3094 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) [2021-11-02 22:20:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:20:28,742 INFO L93 Difference]: Finished difference Result 2206 states and 3366 transitions. [2021-11-02 22:20:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:20:28,742 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 [2021-11-02 22:20:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:20:28,749 INFO L225 Difference]: With dead ends: 2206 [2021-11-02 22:20:28,749 INFO L226 Difference]: Without dead ends: 2202 [2021-11-02 22:20:28,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:20:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-11-02 22:20:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2142. [2021-11-02 22:20:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1672 states have (on average 1.8379186602870814) internal successors, (3073), 2115 states have internal predecessors, (3073), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:20:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3140 transitions. [2021-11-02 22:20:28,812 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3140 transitions. Word has length 100 [2021-11-02 22:20:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:20:28,813 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 3140 transitions. [2021-11-02 22:20:28,813 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) [2021-11-02 22:20:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3140 transitions. [2021-11-02 22:20:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 22:20:28,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:20:28,815 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] [2021-11-02 22:20:28,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:20:29,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:20:29,031 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 644 more)] === [2021-11-02 22:20:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:20:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash -22317783, now seen corresponding path program 5 times [2021-11-02 22:20:29,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:20:29,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536577188] [2021-11-02 22:20:29,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:20:29,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:20:29,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:20:29,033 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:20:29,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50f9d6f-cacd-4552-a844-ea70e405ebd6/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:20:30,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:20:30,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:20:30,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:20:30,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:20:30,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:20:31,068 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:20:31,068 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 22 treesize of output 29 [2021-11-02 22:20:31,159 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 [2021-11-02 22:20:31,397 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 44 treesize of output 32