./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY --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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:29:53,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:29:53,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:29:53,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:29:53,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:29:53,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:29:53,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:29:53,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:29:53,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:29:53,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:29:53,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:29:53,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:29:53,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:29:53,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:29:53,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:29:53,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:29:53,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:29:53,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:29:53,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:29:53,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:29:53,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:29:53,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:29:53,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:29:53,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:29:53,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:29:53,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:29:53,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:29:53,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:29:53,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:29:53,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:29:53,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:29:53,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:29:53,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:29:53,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:29:53,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:29:53,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:29:53,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:29:53,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:29:53,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:29:53,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:29:53,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:29:53,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:29:53,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:29:53,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:29:53,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:29:53,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:29:53,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:29:53,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:29:53,597 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:29:53,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:29:53,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:29:53,598 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:29:53,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:29:53,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:29:53,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:29:53,600 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:29:53,600 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:29:53,601 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:29:53,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:29:53,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:29:53,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:29:53,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:29:53,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:29:53,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:29:53,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:29:53,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:29:53,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:29:53,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:29:53,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:29:53,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:29:53,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:29:53,606 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_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-07 07:29:53,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:29:53,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:29:53,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:29:53,964 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:29:53,965 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:29:53,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-07 07:29:54,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/b2216c6c9/5b6b4159b799463ca2cb3b22930aa473/FLAG4ec92a015 [2021-11-07 07:29:54,849 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:29:54,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-07 07:29:54,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/b2216c6c9/5b6b4159b799463ca2cb3b22930aa473/FLAG4ec92a015 [2021-11-07 07:29:55,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/b2216c6c9/5b6b4159b799463ca2cb3b22930aa473 [2021-11-07 07:29:55,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:29:55,068 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:29:55,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:29:55,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:29:55,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:29:55,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:29:55" (1/1) ... [2021-11-07 07:29:55,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23188e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:29:55, skipping insertion in model container [2021-11-07 07:29:55,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:29:55" (1/1) ... [2021-11-07 07:29:55,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:29:55,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:29:55,602 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-07 07:29:55,725 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-07 07:29:55,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:29:55,754 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) [2021-11-07 07:29:55,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8806d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:29:55, skipping insertion in model container [2021-11-07 07:29:55,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:29:55,757 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 07:29:55,760 INFO L168 Benchmark]: Toolchain (without parser) took 690.19 ms. Allocated memory is still 113.2 MB. Free memory was 79.8 MB in the beginning and 77.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:29:55,762 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:29:55,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.20 ms. Allocated memory is still 113.2 MB. Free memory was 79.8 MB in the beginning and 77.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:29:55,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 687.20 ms. Allocated memory is still 113.2 MB. Free memory was 79.8 MB in the beginning and 77.3 MB in the end (delta: 2.5 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: 815]: 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_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY --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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:29:58,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:29:58,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:29:58,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:29:58,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:29:58,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:29:58,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:29:58,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:29:58,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:29:58,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:29:58,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:29:58,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:29:58,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:29:58,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:29:58,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:29:58,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:29:58,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:29:58,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:29:58,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:29:58,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:29:58,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:29:58,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:29:58,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:29:58,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:29:58,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:29:58,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:29:58,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:29:58,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:29:58,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:29:58,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:29:58,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:29:58,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:29:58,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:29:58,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:29:58,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:29:58,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:29:58,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:29:58,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:29:58,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:29:58,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:29:58,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:29:58,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 07:29:58,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:29:58,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:29:58,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:29:58,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:29:58,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:29:58,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:29:58,390 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:29:58,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:29:58,391 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:29:58,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:29:58,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:29:58,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:29:58,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:29:58,392 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:29:58,392 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:29:58,393 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:29:58,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:29:58,393 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:29:58,393 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:29:58,394 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:29:58,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:29:58,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:29:58,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:29:58,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:29:58,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:29:58,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:29:58,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:29:58,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:29:58,396 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:29:58,396 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:29:58,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:29:58,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:29:58,397 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_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2021-11-07 07:29:58,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:29:58,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:29:58,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:29:58,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:29:58,847 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:29:58,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-07 07:29:58,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/8fad4365e/89a7f5dd7e3b417daf3e760ca587d051/FLAG578c33e38 [2021-11-07 07:29:59,701 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:29:59,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2021-11-07 07:29:59,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/8fad4365e/89a7f5dd7e3b417daf3e760ca587d051/FLAG578c33e38 [2021-11-07 07:29:59,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/data/8fad4365e/89a7f5dd7e3b417daf3e760ca587d051 [2021-11-07 07:29:59,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:29:59,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:29:59,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:29:59,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:29:59,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:29:59,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:29:59" (1/1) ... [2021-11-07 07:29:59,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc14942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:29:59, skipping insertion in model container [2021-11-07 07:29:59,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:29:59" (1/1) ... [2021-11-07 07:29:59,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:29:59,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:30:00,570 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-07 07:30:00,741 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-07 07:30:00,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:30:00,772 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 07:30:00,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:30:00,847 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-07 07:30:00,930 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-07 07:30:00,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:30:00,960 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:30:00,991 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2021-11-07 07:30:01,048 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_02710e1f-7567-4369-b795-f8293b459149/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2021-11-07 07:30:01,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:30:01,116 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:30:01,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01 WrapperNode [2021-11-07 07:30:01,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:30:01,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:30:01,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:30:01,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:30:01,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:30:01,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:30:01,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:30:01,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:30:01,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (1/1) ... [2021-11-07 07:30:01,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:30:01,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:30:01,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:30:01,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:30:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:30:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:30:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:30:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 07:30:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 07:30:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 07:30:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 07:30:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 07:30:01,520 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 07:30:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-07 07:30:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-07 07:30:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:30:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 07:30:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 07:30:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-07 07:30:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-07 07:30:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 07:30:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-07 07:30:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-07 07:30:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-07 07:30:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-07 07:30:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-07 07:30:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-07 07:30:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-07 07:30:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 07:30:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 07:30:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-07 07:30:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-07 07:30:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 07:30:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-07 07:30:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-07 07:30:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-07 07:30:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-07 07:30:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-07 07:30:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-07 07:30:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-07 07:30:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-07 07:30:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-07 07:30:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-07 07:30:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-07 07:30:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-07 07:30:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-07 07:30:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-07 07:30:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-07 07:30:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-07 07:30:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-07 07:30:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-07 07:30:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-07 07:30:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-07 07:30:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-07 07:30:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-07 07:30:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-07 07:30:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-07 07:30:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-07 07:30:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-07 07:30:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-07 07:30:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:30:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:30:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:30:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:30:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:30:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:30:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:30:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:30:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:30:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:30:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:30:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:30:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:30:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:30:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:30:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:30:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 07:30:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 07:30:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 07:30:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 07:30:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 07:30:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:30:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:30:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:30:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:30:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:30:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:30:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:30:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:30:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:30:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:30:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:30:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:30:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:30:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:30:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:30:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:30:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:30:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:30:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:30:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:30:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:30:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:30:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:30:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:30:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:30:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:30:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:30:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:30:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:30:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:30:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:30:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:30:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:30:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:30:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:30:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:30:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:30:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:30:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:30:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:30:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:30:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:30:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:30:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:30:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:30:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:30:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:30:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:30:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:30:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:30:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:30:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:30:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:30:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:30:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:30:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:30:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:30:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:30:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:30:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:30:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:30:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:30:01,555 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:30:01,555 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:30:01,555 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:30:01,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:30:01,555 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:30:01,555 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:30:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:30:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:30:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:30:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:30:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:30:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:30:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:30:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:30:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:30:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:30:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:30:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:30:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:30:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:30:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:30:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:30:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:30:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure clock [2021-11-07 07:30:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure time [2021-11-07 07:30:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure difftime [2021-11-07 07:30:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2021-11-07 07:30:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2021-11-07 07:30:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure strftime_l [2021-11-07 07:30:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime [2021-11-07 07:30:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2021-11-07 07:30:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime_r [2021-11-07 07:30:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure localtime_r [2021-11-07 07:30:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure asctime [2021-11-07 07:30:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2021-11-07 07:30:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure asctime_r [2021-11-07 07:30:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure ctime_r [2021-11-07 07:30:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure tzset [2021-11-07 07:30:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure stime [2021-11-07 07:30:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure timegm [2021-11-07 07:30:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure timelocal [2021-11-07 07:30:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure dysize [2021-11-07 07:30:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure nanosleep [2021-11-07 07:30:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getres [2021-11-07 07:30:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure clock_gettime [2021-11-07 07:30:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure clock_settime [2021-11-07 07:30:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure clock_nanosleep [2021-11-07 07:30:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getcpuclockid [2021-11-07 07:30:01,562 INFO L130 BoogieDeclarations]: Found specification of procedure timer_create [2021-11-07 07:30:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure timer_delete [2021-11-07 07:30:01,563 INFO L130 BoogieDeclarations]: Found specification of procedure timer_settime [2021-11-07 07:30:01,565 INFO L130 BoogieDeclarations]: Found specification of procedure timer_gettime [2021-11-07 07:30:01,565 INFO L130 BoogieDeclarations]: Found specification of procedure timer_getoverrun [2021-11-07 07:30:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_get [2021-11-07 07:30:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 07:30:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 07:30:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 07:30:01,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 07:30:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:30:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-07 07:30:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-07 07:30:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:30:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:30:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:30:01,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:30:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 07:30:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:30:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:30:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 07:30:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:30:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:30:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:30:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:30:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:30:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 07:30:02,113 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:30:07,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:30:07,044 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-07 07:30:07,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:30:07 BoogieIcfgContainer [2021-11-07 07:30:07,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:30:07,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:30:07,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:30:07,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:30:07,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:29:59" (1/3) ... [2021-11-07 07:30:07,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443e09e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:30:07, skipping insertion in model container [2021-11-07 07:30:07,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:30:01" (2/3) ... [2021-11-07 07:30:07,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443e09e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:30:07, skipping insertion in model container [2021-11-07 07:30:07,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:30:07" (3/3) ... [2021-11-07 07:30:07,066 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-1.i [2021-11-07 07:30:07,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:30:07,073 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-07 07:30:07,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:30:07,156 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 [2021-11-07 07:30:07,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-07 07:30:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 07:30:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:30:07,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:07,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:07,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623229, now seen corresponding path program 1 times [2021-11-07 07:30:07,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:07,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073461706] [2021-11-07 07:30:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:07,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:07,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:07,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:07,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:30:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:07,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:30:07,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:07,637 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 [2021-11-07 07:30:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:07,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:07,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:07,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073461706] [2021-11-07 07:30:07,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073461706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:07,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:07,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:30:07,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887442964] [2021-11-07 07:30:07,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:30:07,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:30:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:30:07,767 INFO L87 Difference]: Start difference. First operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:09,658 INFO L93 Difference]: Finished difference Result 877 states and 933 transitions. [2021-11-07 07:30:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:30:09,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-07 07:30:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:09,689 INFO L225 Difference]: With dead ends: 877 [2021-11-07 07:30:09,689 INFO L226 Difference]: Without dead ends: 874 [2021-11-07 07:30:09,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:30:09,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-07 07:30:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 873. [2021-11-07 07:30:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 445 states have (on average 2.042696629213483) internal successors, (909), 862 states have internal predecessors, (909), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 930 transitions. [2021-11-07 07:30:09,826 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 930 transitions. Word has length 7 [2021-11-07 07:30:09,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:09,827 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 930 transitions. [2021-11-07 07:30:09,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 930 transitions. [2021-11-07 07:30:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:30:09,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:09,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:09,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:10,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:10,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623228, now seen corresponding path program 1 times [2021-11-07 07:30:10,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:10,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403484922] [2021-11-07 07:30:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:10,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:10,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:10,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:10,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:30:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:10,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:10,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:10,332 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 [2021-11-07 07:30:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:10,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:10,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:10,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403484922] [2021-11-07 07:30:10,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403484922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:10,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:10,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:30:10,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274066881] [2021-11-07 07:30:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:30:10,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:30:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:10,469 INFO L87 Difference]: Start difference. First operand 873 states and 930 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:15,162 INFO L93 Difference]: Finished difference Result 1156 states and 1238 transitions. [2021-11-07 07:30:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:15,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-07 07:30:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:15,170 INFO L225 Difference]: With dead ends: 1156 [2021-11-07 07:30:15,170 INFO L226 Difference]: Without dead ends: 1156 [2021-11-07 07:30:15,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-07 07:30:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 908. [2021-11-07 07:30:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 489 states have (on average 2.0204498977505114) internal successors, (988), 897 states have internal predecessors, (988), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1009 transitions. [2021-11-07 07:30:15,205 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1009 transitions. Word has length 7 [2021-11-07 07:30:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:15,206 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1009 transitions. [2021-11-07 07:30:15,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1009 transitions. [2021-11-07 07:30:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:30:15,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:15,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:15,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:15,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:15,416 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash 372320716, now seen corresponding path program 1 times [2021-11-07 07:30:15,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:15,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57288406] [2021-11-07 07:30:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:15,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:15,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:15,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:15,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 07:30:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:15,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:30:15,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:15,697 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 [2021-11-07 07:30:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:15,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:15,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:15,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57288406] [2021-11-07 07:30:15,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57288406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:15,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:15,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:30:15,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359423082] [2021-11-07 07:30:15,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:30:15,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:30:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:30:15,769 INFO L87 Difference]: Start difference. First operand 908 states and 1009 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:17,838 INFO L93 Difference]: Finished difference Result 1074 states and 1193 transitions. [2021-11-07 07:30:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:30:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-07 07:30:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:17,848 INFO L225 Difference]: With dead ends: 1074 [2021-11-07 07:30:17,848 INFO L226 Difference]: Without dead ends: 1074 [2021-11-07 07:30:17,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:30:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-07 07:30:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 861. [2021-11-07 07:30:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 489 states have (on average 1.918200408997955) internal successors, (938), 850 states have internal predecessors, (938), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 959 transitions. [2021-11-07 07:30:17,881 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 959 transitions. Word has length 12 [2021-11-07 07:30:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:17,881 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 959 transitions. [2021-11-07 07:30:17,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 959 transitions. [2021-11-07 07:30:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:30:17,882 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:17,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:17,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:18,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:18,096 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash 372320717, now seen corresponding path program 1 times [2021-11-07 07:30:18,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:18,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078595535] [2021-11-07 07:30:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:18,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:18,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:18,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:18,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 07:30:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:18,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:18,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:18,404 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 [2021-11-07 07:30:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:18,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:18,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:18,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078595535] [2021-11-07 07:30:18,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078595535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:18,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:18,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:30:18,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080356276] [2021-11-07 07:30:18,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:30:18,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:30:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:18,603 INFO L87 Difference]: Start difference. First operand 861 states and 959 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:22,898 INFO L93 Difference]: Finished difference Result 1106 states and 1188 transitions. [2021-11-07 07:30:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:22,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-07 07:30:22,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:22,907 INFO L225 Difference]: With dead ends: 1106 [2021-11-07 07:30:22,907 INFO L226 Difference]: Without dead ends: 1106 [2021-11-07 07:30:22,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-07 07:30:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 851. [2021-11-07 07:30:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8916155419222904) internal successors, (925), 840 states have internal predecessors, (925), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 946 transitions. [2021-11-07 07:30:22,937 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 946 transitions. Word has length 12 [2021-11-07 07:30:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:22,938 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 946 transitions. [2021-11-07 07:30:22,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 946 transitions. [2021-11-07 07:30:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 07:30:22,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:22,939 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:22,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:23,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:23,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:23,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:23,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2123497305, now seen corresponding path program 1 times [2021-11-07 07:30:23,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:23,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593261091] [2021-11-07 07:30:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:23,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:23,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:23,151 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:23,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 07:30:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:23,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:23,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:23,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:30:23,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:30:23,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:30:23,517 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 07:30:23,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 07:30:23,592 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 07:30:23,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 07:30:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:23,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:23,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:23,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593261091] [2021-11-07 07:30:23,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593261091] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:23,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:23,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:30:23,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698734177] [2021-11-07 07:30:23,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:30:23,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:30:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:30:23,713 INFO L87 Difference]: Start difference. First operand 851 states and 946 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:25,619 INFO L93 Difference]: Finished difference Result 1057 states and 1172 transitions. [2021-11-07 07:30:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-07 07:30:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:25,648 INFO L225 Difference]: With dead ends: 1057 [2021-11-07 07:30:25,648 INFO L226 Difference]: Without dead ends: 1057 [2021-11-07 07:30:25,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:30:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-11-07 07:30:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 851. [2021-11-07 07:30:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8895705521472392) internal successors, (924), 840 states have internal predecessors, (924), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 945 transitions. [2021-11-07 07:30:25,675 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 945 transitions. Word has length 14 [2021-11-07 07:30:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:25,676 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 945 transitions. [2021-11-07 07:30:25,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 945 transitions. [2021-11-07 07:30:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 07:30:25,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:25,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:25,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:25,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:25,895 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:25,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1316346504, now seen corresponding path program 1 times [2021-11-07 07:30:25,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:25,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031677687] [2021-11-07 07:30:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:25,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:25,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:25,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:25,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 07:30:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:26,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:30:26,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:26,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:26,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:26,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031677687] [2021-11-07 07:30:26,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031677687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:26,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:26,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:30:26,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793219146] [2021-11-07 07:30:26,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:30:26,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:26,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:30:26,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:26,241 INFO L87 Difference]: Start difference. First operand 851 states and 945 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:26,273 INFO L93 Difference]: Finished difference Result 818 states and 911 transitions. [2021-11-07 07:30:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:30:26,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-07 07:30:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:26,279 INFO L225 Difference]: With dead ends: 818 [2021-11-07 07:30:26,279 INFO L226 Difference]: Without dead ends: 818 [2021-11-07 07:30:26,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:26,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-11-07 07:30:26,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 809. [2021-11-07 07:30:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 471 states have (on average 1.870488322717622) internal successors, (881), 798 states have internal predecessors, (881), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 902 transitions. [2021-11-07 07:30:26,304 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 902 transitions. Word has length 22 [2021-11-07 07:30:26,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:26,305 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 902 transitions. [2021-11-07 07:30:26,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:26,305 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 902 transitions. [2021-11-07 07:30:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 07:30:26,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:26,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:26,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:26,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:26,524 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2006361010, now seen corresponding path program 1 times [2021-11-07 07:30:26,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:26,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669238035] [2021-11-07 07:30:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:26,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:26,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:26,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 07:30:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:26,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:26,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:26,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:26,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:26,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669238035] [2021-11-07 07:30:26,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669238035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:26,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:26,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 07:30:26,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004630925] [2021-11-07 07:30:26,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:30:26,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:26,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:30:26,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:30:26,911 INFO L87 Difference]: Start difference. First operand 809 states and 902 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:26,999 INFO L93 Difference]: Finished difference Result 797 states and 883 transitions. [2021-11-07 07:30:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:27,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-07 07:30:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:27,004 INFO L225 Difference]: With dead ends: 797 [2021-11-07 07:30:27,004 INFO L226 Difference]: Without dead ends: 797 [2021-11-07 07:30:27,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:30:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-11-07 07:30:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 787. [2021-11-07 07:30:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 463 states have (on average 1.8401727861771058) internal successors, (852), 776 states have internal predecessors, (852), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 873 transitions. [2021-11-07 07:30:27,027 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 873 transitions. Word has length 24 [2021-11-07 07:30:27,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:27,028 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 873 transitions. [2021-11-07 07:30:27,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 873 transitions. [2021-11-07 07:30:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 07:30:27,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:27,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:27,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:27,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:27,243 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash -366881472, now seen corresponding path program 1 times [2021-11-07 07:30:27,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:27,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145993219] [2021-11-07 07:30:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:27,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:27,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:27,248 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:27,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 07:30:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:27,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:27,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:27,544 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 [2021-11-07 07:30:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:27,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:27,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:27,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145993219] [2021-11-07 07:30:27,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145993219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:27,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:27,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:30:27,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944182231] [2021-11-07 07:30:27,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:30:27,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:30:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:27,859 INFO L87 Difference]: Start difference. First operand 787 states and 873 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:29,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:29,577 INFO L93 Difference]: Finished difference Result 1008 states and 1115 transitions. [2021-11-07 07:30:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:29,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-07 07:30:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:29,585 INFO L225 Difference]: With dead ends: 1008 [2021-11-07 07:30:29,585 INFO L226 Difference]: Without dead ends: 1008 [2021-11-07 07:30:29,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:30:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-07 07:30:29,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 783. [2021-11-07 07:30:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 463 states have (on average 1.8315334773218142) internal successors, (848), 772 states have internal predecessors, (848), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 869 transitions. [2021-11-07 07:30:29,608 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 869 transitions. Word has length 38 [2021-11-07 07:30:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:29,609 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 869 transitions. [2021-11-07 07:30:29,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 869 transitions. [2021-11-07 07:30:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 07:30:29,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:29,611 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:29,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:29,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:29,824 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash -366881471, now seen corresponding path program 1 times [2021-11-07 07:30:29,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:29,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520715350] [2021-11-07 07:30:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:29,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:29,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:29,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 07:30:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:30,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:30:30,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:30,150 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 [2021-11-07 07:30:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:30,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:31,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:31,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520715350] [2021-11-07 07:30:31,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520715350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:31,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:31,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:30:31,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423748322] [2021-11-07 07:30:31,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:30:31,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:30:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:30:31,051 INFO L87 Difference]: Start difference. First operand 783 states and 869 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:37,175 INFO L93 Difference]: Finished difference Result 1046 states and 1119 transitions. [2021-11-07 07:30:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:30:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-07 07:30:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:37,184 INFO L225 Difference]: With dead ends: 1046 [2021-11-07 07:30:37,185 INFO L226 Difference]: Without dead ends: 1046 [2021-11-07 07:30:37,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:30:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-11-07 07:30:37,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 779. [2021-11-07 07:30:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 463 states have (on average 1.8228941684665227) internal successors, (844), 768 states have internal predecessors, (844), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 865 transitions. [2021-11-07 07:30:37,211 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 865 transitions. Word has length 38 [2021-11-07 07:30:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:37,212 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 865 transitions. [2021-11-07 07:30:37,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 865 transitions. [2021-11-07 07:30:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 07:30:37,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:37,214 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] [2021-11-07 07:30:37,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 07:30:37,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:37,437 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1799597351, now seen corresponding path program 1 times [2021-11-07 07:30:37,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:37,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740230640] [2021-11-07 07:30:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:37,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:37,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:37,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:37,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 07:30:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:37,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:37,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:38,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:38,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:38,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740230640] [2021-11-07 07:30:38,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740230640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:38,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:38,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:30:38,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498945811] [2021-11-07 07:30:38,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:30:38,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:38,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:30:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:38,335 INFO L87 Difference]: Start difference. First operand 779 states and 865 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:38,412 INFO L93 Difference]: Finished difference Result 782 states and 864 transitions. [2021-11-07 07:30:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:38,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-11-07 07:30:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:38,418 INFO L225 Difference]: With dead ends: 782 [2021-11-07 07:30:38,418 INFO L226 Difference]: Without dead ends: 782 [2021-11-07 07:30:38,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:30:38,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-07 07:30:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 773. [2021-11-07 07:30:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 457 states have (on average 1.824945295404814) internal successors, (834), 762 states have internal predecessors, (834), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:30:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 855 transitions. [2021-11-07 07:30:38,445 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 855 transitions. Word has length 53 [2021-11-07 07:30:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:38,448 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 855 transitions. [2021-11-07 07:30:38,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 855 transitions. [2021-11-07 07:30:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 07:30:38,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:38,454 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] [2021-11-07 07:30:38,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:38,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:38,668 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:38,669 INFO L85 PathProgramCache]: Analyzing trace with hash -387318643, now seen corresponding path program 1 times [2021-11-07 07:30:38,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:38,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724587605] [2021-11-07 07:30:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:38,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:38,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:38,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:38,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 07:30:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:39,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:39,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:39,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:40,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:40,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724587605] [2021-11-07 07:30:40,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724587605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:40,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:40,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:30:40,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339582315] [2021-11-07 07:30:40,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:30:40,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:40,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:30:40,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:30:40,324 INFO L87 Difference]: Start difference. First operand 773 states and 855 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:40,484 INFO L93 Difference]: Finished difference Result 962 states and 1057 transitions. [2021-11-07 07:30:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:30:40,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-07 07:30:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:40,490 INFO L225 Difference]: With dead ends: 962 [2021-11-07 07:30:40,490 INFO L226 Difference]: Without dead ends: 962 [2021-11-07 07:30:40,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:30:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-11-07 07:30:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 907. [2021-11-07 07:30:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 590 states have (on average 1.7474576271186442) internal successors, (1031), 895 states have internal predecessors, (1031), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 07:30:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1054 transitions. [2021-11-07 07:30:40,520 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1054 transitions. Word has length 61 [2021-11-07 07:30:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:40,521 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1054 transitions. [2021-11-07 07:30:40,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1054 transitions. [2021-11-07 07:30:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 07:30:40,523 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:40,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:40,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:40,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:40,740 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:30:40,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1860046283, now seen corresponding path program 1 times [2021-11-07 07:30:40,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:40,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463350876] [2021-11-07 07:30:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:40,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:40,746 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:40,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 07:30:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:41,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:30:41,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:41,477 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 [2021-11-07 07:30:41,490 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 [2021-11-07 07:30:42,462 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:30:42,463 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 29 treesize of output 31 [2021-11-07 07:30:42,491 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:30:42,492 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 28 treesize of output 24 [2021-11-07 07:30:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:42,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:50,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:50,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463350876] [2021-11-07 07:30:50,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463350876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:50,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:50,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:30:50,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690406627] [2021-11-07 07:30:50,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:30:50,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:50,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:30:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-07 07:30:50,357 INFO L87 Difference]: Start difference. First operand 907 states and 1054 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:31:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:03,481 INFO L93 Difference]: Finished difference Result 1169 states and 1401 transitions. [2021-11-07 07:31:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:31:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-07 07:31:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:03,490 INFO L225 Difference]: With dead ends: 1169 [2021-11-07 07:31:03,490 INFO L226 Difference]: Without dead ends: 1169 [2021-11-07 07:31:03,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-07 07:31:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-11-07 07:31:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 869. [2021-11-07 07:31:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 590 states have (on average 1.6830508474576271) internal successors, (993), 857 states have internal predecessors, (993), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 07:31:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1016 transitions. [2021-11-07 07:31:03,517 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1016 transitions. Word has length 64 [2021-11-07 07:31:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:03,518 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1016 transitions. [2021-11-07 07:31:03,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:31:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1016 transitions. [2021-11-07 07:31:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 07:31:03,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:03,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:03,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:03,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:03,736 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:31:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:03,736 INFO L85 PathProgramCache]: Analyzing trace with hash -946127520, now seen corresponding path program 1 times [2021-11-07 07:31:03,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:03,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503981166] [2021-11-07 07:31:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:03,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:03,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:03,739 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:03,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 07:31:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:04,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:31:04,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:04,407 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 [2021-11-07 07:31:04,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-07 07:31:04,461 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 [2021-11-07 07:31:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:04,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:04,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:04,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503981166] [2021-11-07 07:31:04,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503981166] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:04,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:04,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:31:04,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793466778] [2021-11-07 07:31:04,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:31:04,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:04,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:31:04,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:04,617 INFO L87 Difference]: Start difference. First operand 869 states and 1016 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:31:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:07,347 INFO L93 Difference]: Finished difference Result 868 states and 1015 transitions. [2021-11-07 07:31:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:31:07,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-07 07:31:07,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:07,353 INFO L225 Difference]: With dead ends: 868 [2021-11-07 07:31:07,353 INFO L226 Difference]: Without dead ends: 868 [2021-11-07 07:31:07,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:31:07,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-07 07:31:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2021-11-07 07:31:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 590 states have (on average 1.6813559322033897) internal successors, (992), 856 states have internal predecessors, (992), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 07:31:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1015 transitions. [2021-11-07 07:31:07,376 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1015 transitions. Word has length 69 [2021-11-07 07:31:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:07,377 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1015 transitions. [2021-11-07 07:31:07,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:31:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1015 transitions. [2021-11-07 07:31:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 07:31:07,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:07,379 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:07,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 07:31:07,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:07,607 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:31:07,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -946127519, now seen corresponding path program 1 times [2021-11-07 07:31:07,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:07,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493376213] [2021-11-07 07:31:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:07,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:07,609 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:07,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 07:31:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:08,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:31:08,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:08,338 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 [2021-11-07 07:31:08,362 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 [2021-11-07 07:31:08,373 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 [2021-11-07 07:31:08,456 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 [2021-11-07 07:31:08,459 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 [2021-11-07 07:31:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:08,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:08,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:08,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493376213] [2021-11-07 07:31:08,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493376213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:08,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:08,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 07:31:08,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816955348] [2021-11-07 07:31:08,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:31:08,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:31:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:31:08,881 INFO L87 Difference]: Start difference. First operand 868 states and 1015 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:31:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:16,956 INFO L93 Difference]: Finished difference Result 867 states and 1014 transitions. [2021-11-07 07:31:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:31:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-07 07:31:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:16,961 INFO L225 Difference]: With dead ends: 867 [2021-11-07 07:31:16,962 INFO L226 Difference]: Without dead ends: 867 [2021-11-07 07:31:16,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:31:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-07 07:31:16,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2021-11-07 07:31:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 589 states have (on average 1.6825127334465195) internal successors, (991), 855 states have internal predecessors, (991), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 07:31:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1014 transitions. [2021-11-07 07:31:16,992 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1014 transitions. Word has length 69 [2021-11-07 07:31:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:16,993 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1014 transitions. [2021-11-07 07:31:16,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:31:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1014 transitions. [2021-11-07 07:31:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:31:16,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:16,995 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:17,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 07:31:17,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:17,233 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:31:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash -582919641, now seen corresponding path program 1 times [2021-11-07 07:31:17,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:17,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530633962] [2021-11-07 07:31:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:17,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:17,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:17,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 07:31:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:17,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:31:17,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:18,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:18,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530633962] [2021-11-07 07:31:18,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530633962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:18,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:18,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:31:18,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42461079] [2021-11-07 07:31:18,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:31:18,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:31:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:18,226 INFO L87 Difference]: Start difference. First operand 867 states and 1014 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:18,368 INFO L93 Difference]: Finished difference Result 877 states and 1027 transitions. [2021-11-07 07:31:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:31:18,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-07 07:31:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:18,376 INFO L225 Difference]: With dead ends: 877 [2021-11-07 07:31:18,376 INFO L226 Difference]: Without dead ends: 877 [2021-11-07 07:31:18,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:31:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-11-07 07:31:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2021-11-07 07:31:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 597 states have (on average 1.6800670016750419) internal successors, (1003), 864 states have internal predecessors, (1003), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-07 07:31:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1027 transitions. [2021-11-07 07:31:18,403 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1027 transitions. Word has length 77 [2021-11-07 07:31:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:18,403 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1027 transitions. [2021-11-07 07:31:18,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1027 transitions. [2021-11-07 07:31:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 07:31:18,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:18,405 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:18,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:18,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:18,605 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:31:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1748666471, now seen corresponding path program 1 times [2021-11-07 07:31:18,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:18,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636515270] [2021-11-07 07:31:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:18,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:18,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:18,608 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:18,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 07:31:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:19,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:31:19,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:19,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:19,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:19,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636515270] [2021-11-07 07:31:19,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636515270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:31:19,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:19,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-07 07:31:19,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275098432] [2021-11-07 07:31:19,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:31:19,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:19,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:31:19,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:31:19,981 INFO L87 Difference]: Start difference. First operand 877 states and 1027 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:20,425 INFO L93 Difference]: Finished difference Result 891 states and 1045 transitions. [2021-11-07 07:31:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:31:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-07 07:31:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:20,432 INFO L225 Difference]: With dead ends: 891 [2021-11-07 07:31:20,432 INFO L226 Difference]: Without dead ends: 887 [2021-11-07 07:31:20,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:31:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-07 07:31:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 883. [2021-11-07 07:31:20,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 603 states have (on average 1.6766169154228856) internal successors, (1011), 870 states have internal predecessors, (1011), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-07 07:31:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1035 transitions. [2021-11-07 07:31:20,456 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1035 transitions. Word has length 79 [2021-11-07 07:31:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:20,457 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1035 transitions. [2021-11-07 07:31:20,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1035 transitions. [2021-11-07 07:31:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 07:31:20,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:20,459 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:20,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:20,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:20,675 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:31:20,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:20,675 INFO L85 PathProgramCache]: Analyzing trace with hash 198784231, now seen corresponding path program 2 times [2021-11-07 07:31:20,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:20,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060531395] [2021-11-07 07:31:20,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:31:20,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:20,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:20,678 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:20,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 07:31:21,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:31:21,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:21,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:31:21,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:22,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:22,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:22,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060531395] [2021-11-07 07:31:22,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060531395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:31:22,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:22,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 07:31:22,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655043701] [2021-11-07 07:31:22,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:31:22,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:31:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:31:22,670 INFO L87 Difference]: Start difference. First operand 883 states and 1035 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:24,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:24,552 INFO L93 Difference]: Finished difference Result 911 states and 1073 transitions. [2021-11-07 07:31:24,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 07:31:24,553 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-07 07:31:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:24,563 INFO L225 Difference]: With dead ends: 911 [2021-11-07 07:31:24,563 INFO L226 Difference]: Without dead ends: 907 [2021-11-07 07:31:24,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:31:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-07 07:31:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 895. [2021-11-07 07:31:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 615 states have (on average 1.6699186991869919) internal successors, (1027), 882 states have internal predecessors, (1027), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-07 07:31:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1051 transitions. [2021-11-07 07:31:24,593 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1051 transitions. Word has length 83 [2021-11-07 07:31:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:24,594 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1051 transitions. [2021-11-07 07:31:24,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1051 transitions. [2021-11-07 07:31:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 07:31:24,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:24,596 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:24,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:24,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:24,809 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:31:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1907871207, now seen corresponding path program 3 times [2021-11-07 07:31:24,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:24,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830956102] [2021-11-07 07:31:24,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:31:24,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:24,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:24,812 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:24,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 07:31:26,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 07:31:26,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:26,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:31:26,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:27,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:29,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:29,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830956102] [2021-11-07 07:31:29,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830956102] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:31:29,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:29,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-07 07:31:29,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549164497] [2021-11-07 07:31:29,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:31:29,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:29,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:31:29,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:31:29,230 INFO L87 Difference]: Start difference. First operand 895 states and 1051 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:38,527 INFO L93 Difference]: Finished difference Result 951 states and 1135 transitions. [2021-11-07 07:31:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:31:38,528 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-07 07:31:38,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:38,535 INFO L225 Difference]: With dead ends: 951 [2021-11-07 07:31:38,535 INFO L226 Difference]: Without dead ends: 945 [2021-11-07 07:31:38,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:31:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-07 07:31:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 919. [2021-11-07 07:31:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 639 states have (on average 1.6557120500782472) internal successors, (1058), 906 states have internal predecessors, (1058), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-07 07:31:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1082 transitions. [2021-11-07 07:31:38,563 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1082 transitions. Word has length 91 [2021-11-07 07:31:38,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:38,564 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1082 transitions. [2021-11-07 07:31:38,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:31:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1082 transitions. [2021-11-07 07:31:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 07:31:38,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:38,566 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:38,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:38,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:38,786 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:31:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:38,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1870266343, now seen corresponding path program 4 times [2021-11-07 07:31:38,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:38,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131820537] [2021-11-07 07:31:38,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:31:38,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:38,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:38,788 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:38,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 07:31:39,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:31:39,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:39,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:31:39,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:40,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:45,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:45,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131820537] [2021-11-07 07:31:45,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131820537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:31:45,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:45,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 07:31:45,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892866266] [2021-11-07 07:31:45,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:31:45,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:45,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:31:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:31:45,437 INFO L87 Difference]: Start difference. First operand 919 states and 1082 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:32:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:01,006 INFO L93 Difference]: Finished difference Result 1011 states and 1202 transitions. [2021-11-07 07:32:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 07:32:01,007 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-07 07:32:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:01,014 INFO L225 Difference]: With dead ends: 1011 [2021-11-07 07:32:01,014 INFO L226 Difference]: Without dead ends: 1007 [2021-11-07 07:32:01,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 07:32:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2021-11-07 07:32:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 949. [2021-11-07 07:32:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 669 states have (on average 1.6502242152466369) internal successors, (1104), 936 states have internal predecessors, (1104), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-07 07:32:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1128 transitions. [2021-11-07 07:32:01,083 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1128 transitions. Word has length 107 [2021-11-07 07:32:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:01,084 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1128 transitions. [2021-11-07 07:32:01,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:32:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1128 transitions. [2021-11-07 07:32:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 07:32:01,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:01,087 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:32:01,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:01,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:32:01,302 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-07 07:32:01,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:01,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1845795929, now seen corresponding path program 5 times [2021-11-07 07:32:01,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:32:01,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026835170] [2021-11-07 07:32:01,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:32:01,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:32:01,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:32:01,306 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:32:01,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02710e1f-7567-4369-b795-f8293b459149/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 07:32:03,296 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-07 07:32:03,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:03,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 07:32:03,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:03,379 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 [2021-11-07 07:32:03,657 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 07:32:03,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-07 07:32:03,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-07 07:32:03,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24