./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt --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 602ea7c33e3d58a05b038901c89b84d09b02e08d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt --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 602ea7c33e3d58a05b038901c89b84d09b02e08d 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Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:32:19,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:32:19,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:32:19,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:32:19,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:32:19,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:32:19,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:32:19,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:32:19,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:32:19,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:32:19,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:32:19,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:32:19,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:32:19,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:32:19,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:32:19,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:32:19,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:32:19,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:32:19,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:32:19,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:32:19,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:32:19,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:32:19,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:32:19,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:32:19,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:32:19,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:32:19,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:32:19,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:32:19,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:32:19,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:32:19,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:32:19,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:32:19,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:32:19,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:32:19,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:32:19,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:32:19,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:32:19,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:32:19,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:32:19,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:32:19,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:32:19,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:32:19,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:32:19,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:32:19,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:32:19,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:32:19,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:32:19,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:32:19,490 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:32:19,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:32:19,492 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:32:19,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:32:19,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:32:19,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:32:19,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:32:19,494 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:32:19,495 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:32:19,495 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:32:19,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:32:19,496 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:32:19,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:32:19,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:32:19,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:32:19,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:32:19,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:32:19,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:32:19,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:32:19,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:32:19,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:32:19,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:32:19,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:32:19,499 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_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602ea7c33e3d58a05b038901c89b84d09b02e08d [2021-10-13 00:32:19,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:32:19,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:32:19,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:32:19,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:32:19,862 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:32:19,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-10-13 00:32:19,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/2945ed2db/a10a5dfff17245eea525239eddd7a350/FLAG94812adab [2021-10-13 00:32:20,630 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:32:20,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-10-13 00:32:20,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/2945ed2db/a10a5dfff17245eea525239eddd7a350/FLAG94812adab [2021-10-13 00:32:20,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/2945ed2db/a10a5dfff17245eea525239eddd7a350 [2021-10-13 00:32:20,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:32:20,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:32:20,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:32:20,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:32:20,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:32:20,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:32:20" (1/1) ... [2021-10-13 00:32:20,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1102dea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:20, skipping insertion in model container [2021-10-13 00:32:20,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:32:20" (1/1) ... [2021-10-13 00:32:20,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:32:20,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:32:21,203 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_8909d629-470b-4cf1-83b1-f3e515a75191/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-10-13 00:32:21,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:32:21,504 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:32:21,521 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_8909d629-470b-4cf1-83b1-f3e515a75191/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-10-13 00:32:21,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:32:21,749 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:32:21,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21 WrapperNode [2021-10-13 00:32:21,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:32:21,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:32:21,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:32:21,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:32:21,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:32:21,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:32:21,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:32:21,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:32:21,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (1/1) ... [2021-10-13 00:32:21,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:32:21,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:32:21,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:32:21,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:32:22,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:32:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:32:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:32:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-10-13 00:32:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-10-13 00:32:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-10-13 00:32:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-10-13 00:32:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2021-10-13 00:32:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2021-10-13 00:32:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2021-10-13 00:32:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-10-13 00:32:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-10-13 00:32:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2021-10-13 00:32:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-10-13 00:32:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2021-10-13 00:32:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2021-10-13 00:32:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2021-10-13 00:32:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-10-13 00:32:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2021-10-13 00:32:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-10-13 00:32:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2021-10-13 00:32:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2021-10-13 00:32:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-10-13 00:32:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:32:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-10-13 00:32:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-10-13 00:32:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-10-13 00:32:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-10-13 00:32:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-10-13 00:32:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-10-13 00:32:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2021-10-13 00:32:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:32:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:32:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:32:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:32:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-13 00:32:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:32:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-10-13 00:32:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-10-13 00:32:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-10-13 00:32:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2021-10-13 00:32:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2021-10-13 00:32:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2021-10-13 00:32:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-10-13 00:32:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-10-13 00:32:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2021-10-13 00:32:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-10-13 00:32:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2021-10-13 00:32:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2021-10-13 00:32:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-10-13 00:32:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2021-10-13 00:32:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-10-13 00:32:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2021-10-13 00:32:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-10-13 00:32:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-10-13 00:32:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-10-13 00:32:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-10-13 00:32:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2021-10-13 00:32:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-10-13 00:32:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-10-13 00:32:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-10-13 00:32:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2021-10-13 00:32:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2021-10-13 00:32:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-10-13 00:32:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:32:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-10-13 00:32:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:32:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:32:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:32:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:32:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:32:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:32:22,632 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:22,733 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-10-13 00:32:22,733 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-10-13 00:32:22,740 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:22,780 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-10-13 00:32:22,780 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-10-13 00:32:22,874 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:22,921 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-10-13 00:32:22,922 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-10-13 00:32:23,026 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:23,076 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-10-13 00:32:23,077 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2021-10-13 00:32:23,077 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-10-13 00:32:23,084 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:23,322 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2021-10-13 00:32:23,322 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2021-10-13 00:32:23,324 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:23,378 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-10-13 00:32:23,379 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-10-13 00:32:23,464 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:23,497 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-10-13 00:32:23,497 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-10-13 00:32:23,504 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:23,766 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2021-10-13 00:32:23,767 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2021-10-13 00:32:23,781 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:32:23,786 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-13 00:32:23,786 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-13 00:32:23,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:32:23,850 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 00:32:23,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:32:23 BoogieIcfgContainer [2021-10-13 00:32:23,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:32:23,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:32:23,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:32:23,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:32:23,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:32:20" (1/3) ... [2021-10-13 00:32:23,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77824c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:32:23, skipping insertion in model container [2021-10-13 00:32:23,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:32:21" (2/3) ... [2021-10-13 00:32:23,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77824c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:32:23, skipping insertion in model container [2021-10-13 00:32:23,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:32:23" (3/3) ... [2021-10-13 00:32:23,864 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2021-10-13 00:32:23,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:32:23,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 00:32:23,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:32:23,922 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, mConcurrency=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 [2021-10-13 00:32:23,922 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 00:32:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 518 states, 383 states have (on average 1.4908616187989556) internal successors, (571), 405 states have internal predecessors, (571), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2021-10-13 00:32:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:32:23,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:23,969 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:23,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash 633313405, now seen corresponding path program 1 times [2021-10-13 00:32:23,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:23,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284877106] [2021-10-13 00:32:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:23,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:24,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:24,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284877106] [2021-10-13 00:32:24,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284877106] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:24,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:24,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:32:24,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475534518] [2021-10-13 00:32:24,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:32:24,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:24,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:32:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:24,651 INFO L87 Difference]: Start difference. First operand has 518 states, 383 states have (on average 1.4908616187989556) internal successors, (571), 405 states have internal predecessors, (571), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:32:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:27,254 INFO L93 Difference]: Finished difference Result 671 states and 1030 transitions. [2021-10-13 00:32:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:32:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-10-13 00:32:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:27,297 INFO L225 Difference]: With dead ends: 671 [2021-10-13 00:32:27,297 INFO L226 Difference]: Without dead ends: 665 [2021-10-13 00:32:27,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 155.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:32:27,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-10-13 00:32:27,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2021-10-13 00:32:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4603174603174602) internal successors, (552), 397 states have internal predecessors, (552), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-10-13 00:32:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 741 transitions. [2021-10-13 00:32:27,456 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 741 transitions. Word has length 15 [2021-10-13 00:32:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:27,457 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 741 transitions. [2021-10-13 00:32:27,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:32:27,457 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 741 transitions. [2021-10-13 00:32:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:32:27,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:27,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:27,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:32:27,461 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:27,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:27,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1738610777, now seen corresponding path program 1 times [2021-10-13 00:32:27,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:27,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464653786] [2021-10-13 00:32:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:27,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:27,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:27,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464653786] [2021-10-13 00:32:27,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464653786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:27,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:27,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:32:27,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043650352] [2021-10-13 00:32:27,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:32:27,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:32:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:32:27,785 INFO L87 Difference]: Start difference. First operand 509 states and 741 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:32:30,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:30,695 INFO L93 Difference]: Finished difference Result 670 states and 1022 transitions. [2021-10-13 00:32:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:30,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-10-13 00:32:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:30,712 INFO L225 Difference]: With dead ends: 670 [2021-10-13 00:32:30,712 INFO L226 Difference]: Without dead ends: 665 [2021-10-13 00:32:30,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 215.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-10-13 00:32:30,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 509. [2021-10-13 00:32:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-10-13 00:32:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2021-10-13 00:32:30,806 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2021-10-13 00:32:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:30,807 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2021-10-13 00:32:30,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:32:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2021-10-13 00:32:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:32:30,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:30,810 INFO L512 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] [2021-10-13 00:32:30,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:32:30,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:30,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1016281706, now seen corresponding path program 1 times [2021-10-13 00:32:30,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:30,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134070055] [2021-10-13 00:32:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:30,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:31,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:31,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134070055] [2021-10-13 00:32:31,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134070055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:31,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:31,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:32:31,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197134578] [2021-10-13 00:32:31,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:31,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:31,121 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:33,320 INFO L93 Difference]: Finished difference Result 847 states and 1261 transitions. [2021-10-13 00:32:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:33,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-10-13 00:32:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:33,329 INFO L225 Difference]: With dead ends: 847 [2021-10-13 00:32:33,329 INFO L226 Difference]: Without dead ends: 846 [2021-10-13 00:32:33,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 255.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:32:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-10-13 00:32:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 664. [2021-10-13 00:32:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 502 states have (on average 1.408366533864542) internal successors, (707), 510 states have internal predecessors, (707), 112 states have call successors, (112), 40 states have call predecessors, (112), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2021-10-13 00:32:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 964 transitions. [2021-10-13 00:32:33,386 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 964 transitions. Word has length 25 [2021-10-13 00:32:33,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:33,386 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 964 transitions. [2021-10-13 00:32:33,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 964 transitions. [2021-10-13 00:32:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:32:33,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:33,402 INFO L512 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] [2021-10-13 00:32:33,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:32:33,403 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:33,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1367852756, now seen corresponding path program 1 times [2021-10-13 00:32:33,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:33,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458790349] [2021-10-13 00:32:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:33,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:33,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:33,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:33,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458790349] [2021-10-13 00:32:33,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458790349] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:33,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:33,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:32:33,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288330066] [2021-10-13 00:32:33,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:33,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:33,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:33,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:33,686 INFO L87 Difference]: Start difference. First operand 664 states and 964 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:36,170 INFO L93 Difference]: Finished difference Result 970 states and 1415 transitions. [2021-10-13 00:32:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:36,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-10-13 00:32:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:36,189 INFO L225 Difference]: With dead ends: 970 [2021-10-13 00:32:36,189 INFO L226 Difference]: Without dead ends: 970 [2021-10-13 00:32:36,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 201.7ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:32:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-10-13 00:32:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 789. [2021-10-13 00:32:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 611 states have (on average 1.4042553191489362) internal successors, (858), 615 states have internal predecessors, (858), 114 states have call successors, (114), 46 states have call predecessors, (114), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2021-10-13 00:32:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1135 transitions. [2021-10-13 00:32:36,232 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1135 transitions. Word has length 30 [2021-10-13 00:32:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:36,233 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1135 transitions. [2021-10-13 00:32:36,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1135 transitions. [2021-10-13 00:32:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:32:36,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:36,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:36,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:32:36,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:36,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1062919399, now seen corresponding path program 1 times [2021-10-13 00:32:36,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:36,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188548597] [2021-10-13 00:32:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:36,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:36,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:36,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188548597] [2021-10-13 00:32:36,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188548597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:36,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:32:36,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731957420] [2021-10-13 00:32:36,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:36,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:36,432 INFO L87 Difference]: Start difference. First operand 789 states and 1135 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:39,489 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2021-10-13 00:32:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:32:39,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-10-13 00:32:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:39,502 INFO L225 Difference]: With dead ends: 1344 [2021-10-13 00:32:39,502 INFO L226 Difference]: Without dead ends: 1344 [2021-10-13 00:32:39,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 203.4ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:32:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2021-10-13 00:32:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 907. [2021-10-13 00:32:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 708 states have (on average 1.4138418079096045) internal successors, (1001), 711 states have internal predecessors, (1001), 127 states have call successors, (127), 54 states have call predecessors, (127), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2021-10-13 00:32:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1348 transitions. [2021-10-13 00:32:39,550 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1348 transitions. Word has length 31 [2021-10-13 00:32:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:39,551 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1348 transitions. [2021-10-13 00:32:39,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1348 transitions. [2021-10-13 00:32:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:32:39,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:39,553 INFO L512 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] [2021-10-13 00:32:39,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:32:39,554 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:39,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:39,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1170843407, now seen corresponding path program 1 times [2021-10-13 00:32:39,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:39,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454396455] [2021-10-13 00:32:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:39,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:39,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:39,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454396455] [2021-10-13 00:32:39,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454396455] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:39,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:39,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 00:32:39,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502925540] [2021-10-13 00:32:39,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:32:39,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:32:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:32:39,824 INFO L87 Difference]: Start difference. First operand 907 states and 1348 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:32:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:42,902 INFO L93 Difference]: Finished difference Result 1046 states and 1583 transitions. [2021-10-13 00:32:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:32:42,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-10-13 00:32:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:42,911 INFO L225 Difference]: With dead ends: 1046 [2021-10-13 00:32:42,911 INFO L226 Difference]: Without dead ends: 1046 [2021-10-13 00:32:42,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 547.7ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:32:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-10-13 00:32:42,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 835. [2021-10-13 00:32:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 649 states have (on average 1.399075500770416) internal successors, (908), 653 states have internal predecessors, (908), 118 states have call successors, (118), 50 states have call predecessors, (118), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2021-10-13 00:32:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1203 transitions. [2021-10-13 00:32:42,953 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1203 transitions. Word has length 32 [2021-10-13 00:32:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:42,954 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 1203 transitions. [2021-10-13 00:32:42,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:32:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1203 transitions. [2021-10-13 00:32:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:32:42,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:42,957 INFO L512 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] [2021-10-13 00:32:42,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 00:32:42,957 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:42,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1821153895, now seen corresponding path program 1 times [2021-10-13 00:32:42,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:42,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46940732] [2021-10-13 00:32:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:42,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:43,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:43,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46940732] [2021-10-13 00:32:43,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46940732] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:43,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:43,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:32:43,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713438086] [2021-10-13 00:32:43,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:43,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:43,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:43,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:43,167 INFO L87 Difference]: Start difference. First operand 835 states and 1203 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:45,976 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2021-10-13 00:32:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-10-13 00:32:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:45,984 INFO L225 Difference]: With dead ends: 961 [2021-10-13 00:32:45,984 INFO L226 Difference]: Without dead ends: 961 [2021-10-13 00:32:45,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 180.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2021-10-13 00:32:46,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 834. [2021-10-13 00:32:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 649 states have (on average 1.3959938366718028) internal successors, (906), 652 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2021-10-13 00:32:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1200 transitions. [2021-10-13 00:32:46,026 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1200 transitions. Word has length 36 [2021-10-13 00:32:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:46,027 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1200 transitions. [2021-10-13 00:32:46,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1200 transitions. [2021-10-13 00:32:46,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:32:46,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:46,032 INFO L512 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] [2021-10-13 00:32:46,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:32:46,033 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:46,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:46,033 INFO L82 PathProgramCache]: Analyzing trace with hash -591738262, now seen corresponding path program 1 times [2021-10-13 00:32:46,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:46,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345034207] [2021-10-13 00:32:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:46,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:46,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:46,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:46,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345034207] [2021-10-13 00:32:46,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345034207] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:46,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:46,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:32:46,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870982029] [2021-10-13 00:32:46,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:32:46,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:32:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:46,271 INFO L87 Difference]: Start difference. First operand 834 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:49,522 INFO L93 Difference]: Finished difference Result 999 states and 1436 transitions. [2021-10-13 00:32:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:32:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-10-13 00:32:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:49,529 INFO L225 Difference]: With dead ends: 999 [2021-10-13 00:32:49,529 INFO L226 Difference]: Without dead ends: 999 [2021-10-13 00:32:49,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 373.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:32:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-10-13 00:32:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 736. [2021-10-13 00:32:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 571 states have (on average 1.3870402802101576) internal successors, (792), 575 states have internal predecessors, (792), 106 states have call successors, (106), 45 states have call predecessors, (106), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2021-10-13 00:32:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1029 transitions. [2021-10-13 00:32:49,582 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1029 transitions. Word has length 39 [2021-10-13 00:32:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:49,583 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1029 transitions. [2021-10-13 00:32:49,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1029 transitions. [2021-10-13 00:32:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 00:32:49,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:49,586 INFO L512 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] [2021-10-13 00:32:49,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 00:32:49,587 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:49,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1528077449, now seen corresponding path program 1 times [2021-10-13 00:32:49,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:49,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354236742] [2021-10-13 00:32:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:49,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:49,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:49,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354236742] [2021-10-13 00:32:49,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354236742] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:49,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:49,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:32:49,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224999458] [2021-10-13 00:32:49,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:32:49,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:49,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:32:49,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:32:49,832 INFO L87 Difference]: Start difference. First operand 736 states and 1029 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:51,640 INFO L93 Difference]: Finished difference Result 959 states and 1380 transitions. [2021-10-13 00:32:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:32:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-10-13 00:32:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:51,647 INFO L225 Difference]: With dead ends: 959 [2021-10-13 00:32:51,647 INFO L226 Difference]: Without dead ends: 959 [2021-10-13 00:32:51,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 229.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:32:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-10-13 00:32:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 762. [2021-10-13 00:32:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 608 states have internal predecessors, (832), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2021-10-13 00:32:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1064 transitions. [2021-10-13 00:32:51,679 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1064 transitions. Word has length 40 [2021-10-13 00:32:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:51,680 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1064 transitions. [2021-10-13 00:32:51,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:32:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1064 transitions. [2021-10-13 00:32:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 00:32:51,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:51,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:32:51,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:32:51,684 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash -621720949, now seen corresponding path program 1 times [2021-10-13 00:32:51,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:51,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503504388] [2021-10-13 00:32:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:51,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:51,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:51,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-13 00:32:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:51,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:51,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503504388] [2021-10-13 00:32:51,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503504388] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:51,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:51,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:32:51,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054143589] [2021-10-13 00:32:51,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:32:51,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:51,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:32:51,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:51,884 INFO L87 Difference]: Start difference. First operand 762 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:32:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:54,482 INFO L93 Difference]: Finished difference Result 942 states and 1357 transitions. [2021-10-13 00:32:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:32:54,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-10-13 00:32:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:54,488 INFO L225 Difference]: With dead ends: 942 [2021-10-13 00:32:54,489 INFO L226 Difference]: Without dead ends: 942 [2021-10-13 00:32:54,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 206.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:32:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-10-13 00:32:54,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 762. [2021-10-13 00:32:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 595 states have (on average 1.3966386554621848) internal successors, (831), 608 states have internal predecessors, (831), 108 states have call successors, (108), 48 states have call predecessors, (108), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2021-10-13 00:32:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1063 transitions. [2021-10-13 00:32:54,522 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1063 transitions. Word has length 46 [2021-10-13 00:32:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:54,523 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1063 transitions. [2021-10-13 00:32:54,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:32:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1063 transitions. [2021-10-13 00:32:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 00:32:54,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:54,527 INFO L512 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] [2021-10-13 00:32:54,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:32:54,527 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1459738846, now seen corresponding path program 1 times [2021-10-13 00:32:54,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:54,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374422093] [2021-10-13 00:32:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:54,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:54,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-10-13 00:32:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:54,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:54,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374422093] [2021-10-13 00:32:54,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374422093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:54,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:54,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:32:54,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175339418] [2021-10-13 00:32:54,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:32:54,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:54,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:32:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:32:54,753 INFO L87 Difference]: Start difference. First operand 762 states and 1063 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:32:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:32:56,144 INFO L93 Difference]: Finished difference Result 897 states and 1299 transitions. [2021-10-13 00:32:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:32:56,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-10-13 00:32:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:32:56,151 INFO L225 Difference]: With dead ends: 897 [2021-10-13 00:32:56,151 INFO L226 Difference]: Without dead ends: 897 [2021-10-13 00:32:56,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 241.3ms TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:32:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-10-13 00:32:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 751. [2021-10-13 00:32:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 588 states have (on average 1.3979591836734695) internal successors, (822), 601 states have internal predecessors, (822), 106 states have call successors, (106), 46 states have call predecessors, (106), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2021-10-13 00:32:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1050 transitions. [2021-10-13 00:32:56,185 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1050 transitions. Word has length 47 [2021-10-13 00:32:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:32:56,186 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1050 transitions. [2021-10-13 00:32:56,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-13 00:32:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1050 transitions. [2021-10-13 00:32:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 00:32:56,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:32:56,190 INFO L512 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] [2021-10-13 00:32:56,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:32:56,190 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:32:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:32:56,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1711019189, now seen corresponding path program 1 times [2021-10-13 00:32:56,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:32:56,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209447467] [2021-10-13 00:32:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:32:56,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:32:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:32:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:32:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:32:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:32:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:32:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:32:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:32:56,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:32:56,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209447467] [2021-10-13 00:32:56,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209447467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:32:56,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:32:56,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 00:32:56,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313547485] [2021-10-13 00:32:56,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:32:56,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:32:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:32:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:32:56,481 INFO L87 Difference]: Start difference. First operand 751 states and 1050 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:33:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:00,065 INFO L93 Difference]: Finished difference Result 1006 states and 1439 transitions. [2021-10-13 00:33:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:33:00,065 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2021-10-13 00:33:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:00,072 INFO L225 Difference]: With dead ends: 1006 [2021-10-13 00:33:00,072 INFO L226 Difference]: Without dead ends: 1006 [2021-10-13 00:33:00,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 764.0ms TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:33:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-10-13 00:33:00,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 794. [2021-10-13 00:33:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3964686998394864) internal successors, (870), 635 states have internal predecessors, (870), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2021-10-13 00:33:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1111 transitions. [2021-10-13 00:33:00,108 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1111 transitions. Word has length 48 [2021-10-13 00:33:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:00,109 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1111 transitions. [2021-10-13 00:33:00,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:33:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1111 transitions. [2021-10-13 00:33:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:33:00,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:00,113 INFO L512 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] [2021-10-13 00:33:00,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 00:33:00,113 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash -17559376, now seen corresponding path program 1 times [2021-10-13 00:33:00,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:00,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147992374] [2021-10-13 00:33:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:00,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:00,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:33:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:00,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:00,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147992374] [2021-10-13 00:33:00,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147992374] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:00,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:00,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 00:33:00,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200838785] [2021-10-13 00:33:00,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:33:00,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:33:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:33:00,364 INFO L87 Difference]: Start difference. First operand 794 states and 1111 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:02,565 INFO L93 Difference]: Finished difference Result 927 states and 1338 transitions. [2021-10-13 00:33:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:33:02,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-10-13 00:33:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:02,572 INFO L225 Difference]: With dead ends: 927 [2021-10-13 00:33:02,573 INFO L226 Difference]: Without dead ends: 927 [2021-10-13 00:33:02,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 298.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:33:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-10-13 00:33:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 797. [2021-10-13 00:33:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3961661341853036) internal successors, (874), 638 states have internal predecessors, (874), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2021-10-13 00:33:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1115 transitions. [2021-10-13 00:33:02,607 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1115 transitions. Word has length 50 [2021-10-13 00:33:02,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:02,607 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1115 transitions. [2021-10-13 00:33:02,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1115 transitions. [2021-10-13 00:33:02,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:33:02,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:02,611 INFO L512 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] [2021-10-13 00:33:02,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 00:33:02,612 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2011704082, now seen corresponding path program 1 times [2021-10-13 00:33:02,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:02,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311966959] [2021-10-13 00:33:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:02,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:02,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:33:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:02,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:02,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311966959] [2021-10-13 00:33:02,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311966959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:02,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:02,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 00:33:02,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329736853] [2021-10-13 00:33:02,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:33:02,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:02,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:33:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:33:02,905 INFO L87 Difference]: Start difference. First operand 797 states and 1115 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:33:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:05,911 INFO L93 Difference]: Finished difference Result 914 states and 1320 transitions. [2021-10-13 00:33:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:33:05,912 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-10-13 00:33:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:05,918 INFO L225 Difference]: With dead ends: 914 [2021-10-13 00:33:05,919 INFO L226 Difference]: Without dead ends: 914 [2021-10-13 00:33:05,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 518.5ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:33:05,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-13 00:33:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2021-10-13 00:33:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.391304347826087) internal successors, (864), 633 states have internal predecessors, (864), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2021-10-13 00:33:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1105 transitions. [2021-10-13 00:33:05,953 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1105 transitions. Word has length 50 [2021-10-13 00:33:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:05,953 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1105 transitions. [2021-10-13 00:33:05,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:33:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1105 transitions. [2021-10-13 00:33:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:33:05,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:05,958 INFO L512 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] [2021-10-13 00:33:05,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 00:33:05,958 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:05,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1865011280, now seen corresponding path program 1 times [2021-10-13 00:33:05,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:05,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6751747] [2021-10-13 00:33:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:05,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:33:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:06,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:06,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6751747] [2021-10-13 00:33:06,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6751747] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:06,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:06,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:33:06,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876319262] [2021-10-13 00:33:06,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:33:06,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:33:06,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:33:06,180 INFO L87 Difference]: Start difference. First operand 792 states and 1105 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:08,723 INFO L93 Difference]: Finished difference Result 1074 states and 1532 transitions. [2021-10-13 00:33:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:33:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-10-13 00:33:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:08,730 INFO L225 Difference]: With dead ends: 1074 [2021-10-13 00:33:08,730 INFO L226 Difference]: Without dead ends: 1074 [2021-10-13 00:33:08,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 207.3ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:33:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-10-13 00:33:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 848. [2021-10-13 00:33:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3725490196078431) internal successors, (910), 677 states have internal predecessors, (910), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2021-10-13 00:33:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1165 transitions. [2021-10-13 00:33:08,764 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1165 transitions. Word has length 50 [2021-10-13 00:33:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:08,765 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 1165 transitions. [2021-10-13 00:33:08,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1165 transitions. [2021-10-13 00:33:08,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 00:33:08,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:08,769 INFO L512 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] [2021-10-13 00:33:08,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 00:33:08,769 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:08,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:08,770 INFO L82 PathProgramCache]: Analyzing trace with hash -540904097, now seen corresponding path program 1 times [2021-10-13 00:33:08,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:08,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389623975] [2021-10-13 00:33:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:08,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:33:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:09,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:09,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:09,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389623975] [2021-10-13 00:33:09,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389623975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:09,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:09,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 00:33:09,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277781494] [2021-10-13 00:33:09,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:33:09,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:33:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:33:09,069 INFO L87 Difference]: Start difference. First operand 848 states and 1165 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:33:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:11,173 INFO L93 Difference]: Finished difference Result 991 states and 1404 transitions. [2021-10-13 00:33:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:33:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2021-10-13 00:33:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:11,180 INFO L225 Difference]: With dead ends: 991 [2021-10-13 00:33:11,180 INFO L226 Difference]: Without dead ends: 991 [2021-10-13 00:33:11,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 246.5ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:33:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-10-13 00:33:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 867. [2021-10-13 00:33:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 679 states have (on average 1.369661266568483) internal successors, (930), 694 states have internal predecessors, (930), 113 states have call successors, (113), 52 states have call predecessors, (113), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2021-10-13 00:33:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1188 transitions. [2021-10-13 00:33:11,213 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1188 transitions. Word has length 52 [2021-10-13 00:33:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:11,214 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1188 transitions. [2021-10-13 00:33:11,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:33:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1188 transitions. [2021-10-13 00:33:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 00:33:11,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:11,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:11,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 00:33:11,218 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:11,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1037319808, now seen corresponding path program 1 times [2021-10-13 00:33:11,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:11,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934518246] [2021-10-13 00:33:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:11,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:11,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-13 00:33:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-10-13 00:33:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:11,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:11,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934518246] [2021-10-13 00:33:11,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934518246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:11,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:11,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 00:33:11,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415456480] [2021-10-13 00:33:11,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:33:11,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:33:11,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:33:11,424 INFO L87 Difference]: Start difference. First operand 867 states and 1188 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:14,480 INFO L93 Difference]: Finished difference Result 956 states and 1361 transitions. [2021-10-13 00:33:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:33:14,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2021-10-13 00:33:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:14,486 INFO L225 Difference]: With dead ends: 956 [2021-10-13 00:33:14,486 INFO L226 Difference]: Without dead ends: 956 [2021-10-13 00:33:14,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 223.9ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:33:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-13 00:33:14,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 836. [2021-10-13 00:33:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 655 states have (on average 1.369465648854962) internal successors, (897), 668 states have internal predecessors, (897), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2021-10-13 00:33:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1148 transitions. [2021-10-13 00:33:14,521 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1148 transitions. Word has length 54 [2021-10-13 00:33:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:14,521 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1148 transitions. [2021-10-13 00:33:14,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1148 transitions. [2021-10-13 00:33:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:33:14,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:14,525 INFO L512 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] [2021-10-13 00:33:14,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 00:33:14,526 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1536910814, now seen corresponding path program 1 times [2021-10-13 00:33:14,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:14,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021368461] [2021-10-13 00:33:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:14,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:33:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:14,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:14,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021368461] [2021-10-13 00:33:14,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021368461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:14,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:14,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:33:14,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555593663] [2021-10-13 00:33:14,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:33:14,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:33:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:33:14,814 INFO L87 Difference]: Start difference. First operand 836 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:17,442 INFO L93 Difference]: Finished difference Result 968 states and 1375 transitions. [2021-10-13 00:33:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:33:17,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2021-10-13 00:33:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:17,448 INFO L225 Difference]: With dead ends: 968 [2021-10-13 00:33:17,448 INFO L226 Difference]: Without dead ends: 967 [2021-10-13 00:33:17,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 184.0ms TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:33:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-10-13 00:33:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 843. [2021-10-13 00:33:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 661 states have (on average 1.367624810892587) internal successors, (904), 675 states have internal predecessors, (904), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2021-10-13 00:33:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1157 transitions. [2021-10-13 00:33:17,477 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1157 transitions. Word has length 51 [2021-10-13 00:33:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:17,477 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1157 transitions. [2021-10-13 00:33:17,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1157 transitions. [2021-10-13 00:33:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:33:17,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:17,481 INFO L512 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] [2021-10-13 00:33:17,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 00:33:17,481 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:17,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1537187644, now seen corresponding path program 1 times [2021-10-13 00:33:17,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:17,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81367169] [2021-10-13 00:33:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:17,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:33:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:17,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:17,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81367169] [2021-10-13 00:33:17,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81367169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:17,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:17,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:33:17,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177281236] [2021-10-13 00:33:17,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:33:17,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:33:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:33:17,753 INFO L87 Difference]: Start difference. First operand 843 states and 1157 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:20,509 INFO L93 Difference]: Finished difference Result 983 states and 1391 transitions. [2021-10-13 00:33:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:33:20,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2021-10-13 00:33:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:20,516 INFO L225 Difference]: With dead ends: 983 [2021-10-13 00:33:20,516 INFO L226 Difference]: Without dead ends: 962 [2021-10-13 00:33:20,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 260.8ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:33:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-10-13 00:33:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 842. [2021-10-13 00:33:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3666666666666667) internal successors, (902), 674 states have internal predecessors, (902), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2021-10-13 00:33:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1155 transitions. [2021-10-13 00:33:20,542 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1155 transitions. Word has length 51 [2021-10-13 00:33:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:20,542 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1155 transitions. [2021-10-13 00:33:20,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:33:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1155 transitions. [2021-10-13 00:33:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:33:20,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:20,546 INFO L512 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] [2021-10-13 00:33:20,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 00:33:20,546 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:20,547 INFO L82 PathProgramCache]: Analyzing trace with hash 855429365, now seen corresponding path program 1 times [2021-10-13 00:33:20,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:20,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671293620] [2021-10-13 00:33:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:20,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:20,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:33:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:20,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:20,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671293620] [2021-10-13 00:33:20,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671293620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:20,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:20,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:33:20,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914591411] [2021-10-13 00:33:20,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:33:20,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:33:20,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:33:20,899 INFO L87 Difference]: Start difference. First operand 842 states and 1155 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:23,980 INFO L93 Difference]: Finished difference Result 968 states and 1372 transitions. [2021-10-13 00:33:23,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:33:23,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2021-10-13 00:33:23,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:23,986 INFO L225 Difference]: With dead ends: 968 [2021-10-13 00:33:23,986 INFO L226 Difference]: Without dead ends: 968 [2021-10-13 00:33:23,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 530.5ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:33:23,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-10-13 00:33:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2021-10-13 00:33:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 660 states have (on average 1.3651515151515152) internal successors, (901), 674 states have internal predecessors, (901), 112 states have call successors, (112), 51 states have call predecessors, (112), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2021-10-13 00:33:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1154 transitions. [2021-10-13 00:33:24,015 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1154 transitions. Word has length 53 [2021-10-13 00:33:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:24,016 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1154 transitions. [2021-10-13 00:33:24,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1154 transitions. [2021-10-13 00:33:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 00:33:24,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:24,020 INFO L512 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] [2021-10-13 00:33:24,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 00:33:24,020 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:24,021 INFO L82 PathProgramCache]: Analyzing trace with hash -353388327, now seen corresponding path program 1 times [2021-10-13 00:33:24,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:24,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676121961] [2021-10-13 00:33:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:24,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:33:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:24,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:24,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676121961] [2021-10-13 00:33:24,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676121961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:24,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:24,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 00:33:24,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479754934] [2021-10-13 00:33:24,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:33:24,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:33:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:33:24,251 INFO L87 Difference]: Start difference. First operand 842 states and 1154 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:33:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:27,572 INFO L93 Difference]: Finished difference Result 975 states and 1378 transitions. [2021-10-13 00:33:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:33:27,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-10-13 00:33:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:27,576 INFO L225 Difference]: With dead ends: 975 [2021-10-13 00:33:27,577 INFO L226 Difference]: Without dead ends: 943 [2021-10-13 00:33:27,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 575.2ms TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:33:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-10-13 00:33:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 815. [2021-10-13 00:33:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3746081504702194) internal successors, (877), 651 states have internal predecessors, (877), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2021-10-13 00:33:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1124 transitions. [2021-10-13 00:33:27,604 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1124 transitions. Word has length 52 [2021-10-13 00:33:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:27,604 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1124 transitions. [2021-10-13 00:33:27,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:33:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1124 transitions. [2021-10-13 00:33:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 00:33:27,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:27,609 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:27,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 00:33:27,609 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:27,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:27,610 INFO L82 PathProgramCache]: Analyzing trace with hash 116484228, now seen corresponding path program 1 times [2021-10-13 00:33:27,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:27,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786563917] [2021-10-13 00:33:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:27,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:27,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:27,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:33:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:27,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:27,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:27,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786563917] [2021-10-13 00:33:27,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786563917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:27,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:27,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:33:27,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615853843] [2021-10-13 00:33:27,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:33:27,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:27,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:33:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:33:27,963 INFO L87 Difference]: Start difference. First operand 815 states and 1124 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:31,586 INFO L93 Difference]: Finished difference Result 939 states and 1339 transitions. [2021-10-13 00:33:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:33:31,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2021-10-13 00:33:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:31,593 INFO L225 Difference]: With dead ends: 939 [2021-10-13 00:33:31,593 INFO L226 Difference]: Without dead ends: 939 [2021-10-13 00:33:31,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 625.5ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:33:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2021-10-13 00:33:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 815. [2021-10-13 00:33:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 651 states have internal predecessors, (876), 109 states have call successors, (109), 49 states have call predecessors, (109), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2021-10-13 00:33:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1123 transitions. [2021-10-13 00:33:31,621 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1123 transitions. Word has length 54 [2021-10-13 00:33:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:31,621 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1123 transitions. [2021-10-13 00:33:31,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1123 transitions. [2021-10-13 00:33:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 00:33:31,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:31,625 INFO L512 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] [2021-10-13 00:33:31,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-13 00:33:31,626 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:31,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:31,626 INFO L82 PathProgramCache]: Analyzing trace with hash -371811202, now seen corresponding path program 1 times [2021-10-13 00:33:31,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:31,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417173115] [2021-10-13 00:33:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:31,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:33:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:31,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:31,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417173115] [2021-10-13 00:33:31,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417173115] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:31,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:31,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-13 00:33:31,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941959167] [2021-10-13 00:33:31,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:33:31,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:33:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:33:31,992 INFO L87 Difference]: Start difference. First operand 815 states and 1123 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:35,466 INFO L93 Difference]: Finished difference Result 963 states and 1369 transitions. [2021-10-13 00:33:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:33:35,466 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2021-10-13 00:33:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:35,472 INFO L225 Difference]: With dead ends: 963 [2021-10-13 00:33:35,472 INFO L226 Difference]: Without dead ends: 926 [2021-10-13 00:33:35,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 378.4ms TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:33:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-13 00:33:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 806. [2021-10-13 00:33:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 631 states have (on average 1.3565768621236134) internal successors, (856), 644 states have internal predecessors, (856), 107 states have call successors, (107), 49 states have call predecessors, (107), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2021-10-13 00:33:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1099 transitions. [2021-10-13 00:33:35,502 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1099 transitions. Word has length 55 [2021-10-13 00:33:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:35,502 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 1099 transitions. [2021-10-13 00:33:35,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1099 transitions. [2021-10-13 00:33:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:33:35,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:35,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:35,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 00:33:35,507 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:35,507 INFO L82 PathProgramCache]: Analyzing trace with hash 149703456, now seen corresponding path program 1 times [2021-10-13 00:33:35,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:35,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529050575] [2021-10-13 00:33:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:35,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:35,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:35,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-13 00:33:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:33:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:35,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:35,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529050575] [2021-10-13 00:33:35,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529050575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:35,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:35,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-13 00:33:35,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324102844] [2021-10-13 00:33:35,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:33:35,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:33:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:33:35,867 INFO L87 Difference]: Start difference. First operand 806 states and 1099 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:33:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:39,239 INFO L93 Difference]: Finished difference Result 939 states and 1323 transitions. [2021-10-13 00:33:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:33:39,239 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2021-10-13 00:33:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:39,244 INFO L225 Difference]: With dead ends: 939 [2021-10-13 00:33:39,244 INFO L226 Difference]: Without dead ends: 924 [2021-10-13 00:33:39,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 263.3ms TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:33:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-10-13 00:33:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 804. [2021-10-13 00:33:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 630 states have (on average 1.3555555555555556) internal successors, (854), 643 states have internal predecessors, (854), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2021-10-13 00:33:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1095 transitions. [2021-10-13 00:33:39,272 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1095 transitions. Word has length 56 [2021-10-13 00:33:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:39,273 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1095 transitions. [2021-10-13 00:33:39,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:33:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1095 transitions. [2021-10-13 00:33:39,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 00:33:39,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:39,276 INFO L512 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] [2021-10-13 00:33:39,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-13 00:33:39,277 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1617706055, now seen corresponding path program 1 times [2021-10-13 00:33:39,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:39,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74617975] [2021-10-13 00:33:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:39,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-13 00:33:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:39,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:39,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:39,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74617975] [2021-10-13 00:33:39,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74617975] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:39,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:39,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-13 00:33:39,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303740948] [2021-10-13 00:33:39,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:33:39,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:39,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:33:39,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:33:39,628 INFO L87 Difference]: Start difference. First operand 804 states and 1095 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:33:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:43,160 INFO L93 Difference]: Finished difference Result 934 states and 1316 transitions. [2021-10-13 00:33:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:33:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2021-10-13 00:33:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:43,165 INFO L225 Difference]: With dead ends: 934 [2021-10-13 00:33:43,165 INFO L226 Difference]: Without dead ends: 919 [2021-10-13 00:33:43,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 248.0ms TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:33:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-10-13 00:33:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 799. [2021-10-13 00:33:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3556618819776713) internal successors, (850), 640 states have internal predecessors, (850), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2021-10-13 00:33:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1088 transitions. [2021-10-13 00:33:43,192 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1088 transitions. Word has length 55 [2021-10-13 00:33:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:43,193 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1088 transitions. [2021-10-13 00:33:43,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:33:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1088 transitions. [2021-10-13 00:33:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:33:43,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:43,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:43,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-13 00:33:43,197 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:43,198 INFO L82 PathProgramCache]: Analyzing trace with hash -29735584, now seen corresponding path program 1 times [2021-10-13 00:33:43,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:43,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778235276] [2021-10-13 00:33:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:43,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:43,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:43,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:33:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:33:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:33:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:43,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:43,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778235276] [2021-10-13 00:33:43,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778235276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:43,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:43,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 00:33:43,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596035077] [2021-10-13 00:33:43,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:33:43,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:33:43,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:33:43,459 INFO L87 Difference]: Start difference. First operand 799 states and 1088 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:46,498 INFO L93 Difference]: Finished difference Result 941 states and 1319 transitions. [2021-10-13 00:33:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:33:46,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-10-13 00:33:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:46,504 INFO L225 Difference]: With dead ends: 941 [2021-10-13 00:33:46,504 INFO L226 Difference]: Without dead ends: 941 [2021-10-13 00:33:46,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 389.5ms TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:33:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-10-13 00:33:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 799. [2021-10-13 00:33:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.354066985645933) internal successors, (849), 640 states have internal predecessors, (849), 105 states have call successors, (105), 49 states have call predecessors, (105), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2021-10-13 00:33:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1087 transitions. [2021-10-13 00:33:46,532 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1087 transitions. Word has length 56 [2021-10-13 00:33:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:46,533 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1087 transitions. [2021-10-13 00:33:46,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:33:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1087 transitions. [2021-10-13 00:33:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 00:33:46,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:46,537 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:33:46,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-13 00:33:46,537 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:46,538 INFO L82 PathProgramCache]: Analyzing trace with hash 961876664, now seen corresponding path program 1 times [2021-10-13 00:33:46,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:46,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888584677] [2021-10-13 00:33:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:46,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-10-13 00:33:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-10-13 00:33:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:33:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-13 00:33:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:46,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:46,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888584677] [2021-10-13 00:33:46,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888584677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:33:46,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791140013] [2021-10-13 00:33:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:46,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:33:46,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:33:46,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:33:46,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:33:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:47,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:33:47,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:33:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:47,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791140013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:33:47,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:33:47,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2021-10-13 00:33:47,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273094605] [2021-10-13 00:33:47,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:33:47,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:33:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:33:47,776 INFO L87 Difference]: Start difference. First operand 799 states and 1087 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (22), 11 states have call predecessors, (22), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2021-10-13 00:33:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:51,350 INFO L93 Difference]: Finished difference Result 1179 states and 1630 transitions. [2021-10-13 00:33:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:33:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (22), 11 states have call predecessors, (22), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 74 [2021-10-13 00:33:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:51,357 INFO L225 Difference]: With dead ends: 1179 [2021-10-13 00:33:51,357 INFO L226 Difference]: Without dead ends: 1179 [2021-10-13 00:33:51,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 640.5ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:33:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-10-13 00:33:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 878. [2021-10-13 00:33:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 691 states have (on average 1.3429811866859624) internal successors, (928), 703 states have internal predecessors, (928), 109 states have call successors, (109), 55 states have call predecessors, (109), 77 states have return successors, (144), 126 states have call predecessors, (144), 103 states have call successors, (144) [2021-10-13 00:33:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1181 transitions. [2021-10-13 00:33:51,389 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1181 transitions. Word has length 74 [2021-10-13 00:33:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:51,390 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1181 transitions. [2021-10-13 00:33:51,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 6 states have internal predecessors, (105), 5 states have call successors, (22), 11 states have call predecessors, (22), 4 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2021-10-13 00:33:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1181 transitions. [2021-10-13 00:33:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 00:33:51,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:51,394 INFO L512 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] [2021-10-13 00:33:51,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:33:51,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 00:33:51,607 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:51,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:51,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1650252631, now seen corresponding path program 1 times [2021-10-13 00:33:51,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:51,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621659365] [2021-10-13 00:33:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:51,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:51,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:51,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:33:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:51,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:33:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:33:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:52,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:52,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:52,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621659365] [2021-10-13 00:33:52,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621659365] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:52,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:52,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-10-13 00:33:52,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50089119] [2021-10-13 00:33:52,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:33:52,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:33:52,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:33:52,085 INFO L87 Difference]: Start difference. First operand 878 states and 1181 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:33:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:33:56,279 INFO L93 Difference]: Finished difference Result 1043 states and 1451 transitions. [2021-10-13 00:33:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:33:56,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2021-10-13 00:33:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:33:56,285 INFO L225 Difference]: With dead ends: 1043 [2021-10-13 00:33:56,285 INFO L226 Difference]: Without dead ends: 1020 [2021-10-13 00:33:56,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 581.1ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:33:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-10-13 00:33:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 877. [2021-10-13 00:33:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 690 states have (on average 1.3289855072463768) internal successors, (917), 702 states have internal predecessors, (917), 109 states have call successors, (109), 55 states have call predecessors, (109), 77 states have return successors, (144), 126 states have call predecessors, (144), 103 states have call successors, (144) [2021-10-13 00:33:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1170 transitions. [2021-10-13 00:33:56,314 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1170 transitions. Word has length 59 [2021-10-13 00:33:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:33:56,315 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1170 transitions. [2021-10-13 00:33:56,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:33:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1170 transitions. [2021-10-13 00:33:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:33:56,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:33:56,319 INFO L512 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] [2021-10-13 00:33:56,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-13 00:33:56,319 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:33:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:33:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash 846257089, now seen corresponding path program 1 times [2021-10-13 00:33:56,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:33:56,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139260260] [2021-10-13 00:33:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:33:56,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:33:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:33:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:33:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:56,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:33:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:33:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:33:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:33:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:33:56,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:33:56,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139260260] [2021-10-13 00:33:56,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139260260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:33:56,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:33:56,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-10-13 00:33:56,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377542893] [2021-10-13 00:33:56,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:33:56,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:33:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:33:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:33:56,666 INFO L87 Difference]: Start difference. First operand 877 states and 1170 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:34:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:00,045 INFO L93 Difference]: Finished difference Result 1032 states and 1425 transitions. [2021-10-13 00:34:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:34:00,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2021-10-13 00:34:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:00,051 INFO L225 Difference]: With dead ends: 1032 [2021-10-13 00:34:00,052 INFO L226 Difference]: Without dead ends: 1015 [2021-10-13 00:34:00,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 248.6ms TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:34:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-10-13 00:34:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 874. [2021-10-13 00:34:00,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 688 states have (on average 1.3284883720930232) internal successors, (914), 700 states have internal predecessors, (914), 108 states have call successors, (108), 55 states have call predecessors, (108), 77 states have return successors, (143), 125 states have call predecessors, (143), 102 states have call successors, (143) [2021-10-13 00:34:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1165 transitions. [2021-10-13 00:34:00,079 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1165 transitions. Word has length 58 [2021-10-13 00:34:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:00,079 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1165 transitions. [2021-10-13 00:34:00,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:34:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1165 transitions. [2021-10-13 00:34:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 00:34:00,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:00,083 INFO L512 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] [2021-10-13 00:34:00,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-13 00:34:00,084 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:00,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1695565928, now seen corresponding path program 1 times [2021-10-13 00:34:00,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:00,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114928270] [2021-10-13 00:34:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:00,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-13 00:34:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:00,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:00,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114928270] [2021-10-13 00:34:00,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114928270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:00,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:00,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-13 00:34:00,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887576809] [2021-10-13 00:34:00,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:34:00,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:34:00,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:34:00,465 INFO L87 Difference]: Start difference. First operand 874 states and 1165 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:34:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:03,385 INFO L93 Difference]: Finished difference Result 1034 states and 1425 transitions. [2021-10-13 00:34:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:34:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2021-10-13 00:34:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:03,389 INFO L225 Difference]: With dead ends: 1034 [2021-10-13 00:34:03,390 INFO L226 Difference]: Without dead ends: 1000 [2021-10-13 00:34:03,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 385.0ms TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:34:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-10-13 00:34:03,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 862. [2021-10-13 00:34:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 679 states have (on average 1.3240058910162003) internal successors, (899), 691 states have internal predecessors, (899), 105 states have call successors, (105), 55 states have call predecessors, (105), 77 states have return successors, (140), 122 states have call predecessors, (140), 99 states have call successors, (140) [2021-10-13 00:34:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1144 transitions. [2021-10-13 00:34:03,415 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1144 transitions. Word has length 59 [2021-10-13 00:34:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:03,416 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1144 transitions. [2021-10-13 00:34:03,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 7 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:34:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1144 transitions. [2021-10-13 00:34:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 00:34:03,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:03,420 INFO L512 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] [2021-10-13 00:34:03,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-13 00:34:03,420 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:03,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1230874093, now seen corresponding path program 1 times [2021-10-13 00:34:03,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:03,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876101865] [2021-10-13 00:34:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:03,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-13 00:34:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:03,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:03,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876101865] [2021-10-13 00:34:03,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876101865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:03,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:03,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 00:34:03,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532393164] [2021-10-13 00:34:03,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:34:03,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:03,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:34:03,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:34:03,710 INFO L87 Difference]: Start difference. First operand 862 states and 1144 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:06,794 INFO L93 Difference]: Finished difference Result 1068 states and 1495 transitions. [2021-10-13 00:34:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:34:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-10-13 00:34:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:06,798 INFO L225 Difference]: With dead ends: 1068 [2021-10-13 00:34:06,799 INFO L226 Difference]: Without dead ends: 1068 [2021-10-13 00:34:06,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 389.3ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:34:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-13 00:34:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 869. [2021-10-13 00:34:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 684 states have (on average 1.3245614035087718) internal successors, (906), 697 states have internal predecessors, (906), 106 states have call successors, (106), 55 states have call predecessors, (106), 78 states have return successors, (147), 123 states have call predecessors, (147), 100 states have call successors, (147) [2021-10-13 00:34:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1159 transitions. [2021-10-13 00:34:06,828 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1159 transitions. Word has length 60 [2021-10-13 00:34:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:06,828 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1159 transitions. [2021-10-13 00:34:06,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1159 transitions. [2021-10-13 00:34:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 00:34:06,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:06,833 INFO L512 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] [2021-10-13 00:34:06,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-13 00:34:06,833 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:06,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1505633707, now seen corresponding path program 1 times [2021-10-13 00:34:06,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:06,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863658184] [2021-10-13 00:34:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:06,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:06,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:07,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-13 00:34:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:07,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:07,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863658184] [2021-10-13 00:34:07,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863658184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:07,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:07,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-10-13 00:34:07,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665388692] [2021-10-13 00:34:07,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:34:07,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:07,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:34:07,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:34:07,244 INFO L87 Difference]: Start difference. First operand 869 states and 1159 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:10,065 INFO L93 Difference]: Finished difference Result 1030 states and 1429 transitions. [2021-10-13 00:34:10,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:34:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-10-13 00:34:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:10,088 INFO L225 Difference]: With dead ends: 1030 [2021-10-13 00:34:10,089 INFO L226 Difference]: Without dead ends: 1008 [2021-10-13 00:34:10,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 341.7ms TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:34:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-10-13 00:34:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 867. [2021-10-13 00:34:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 683 states have (on average 1.3235724743777453) internal successors, (904), 696 states have internal predecessors, (904), 105 states have call successors, (105), 55 states have call predecessors, (105), 78 states have return successors, (146), 122 states have call predecessors, (146), 99 states have call successors, (146) [2021-10-13 00:34:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1155 transitions. [2021-10-13 00:34:10,114 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1155 transitions. Word has length 60 [2021-10-13 00:34:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:10,114 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1155 transitions. [2021-10-13 00:34:10,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1155 transitions. [2021-10-13 00:34:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 00:34:10,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:10,118 INFO L512 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] [2021-10-13 00:34:10,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-13 00:34:10,119 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:10,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:10,120 INFO L82 PathProgramCache]: Analyzing trace with hash -297990324, now seen corresponding path program 1 times [2021-10-13 00:34:10,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:10,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714513945] [2021-10-13 00:34:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:10,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:10,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:34:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:10,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:10,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714513945] [2021-10-13 00:34:10,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714513945] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:10,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:10,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 00:34:10,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829148811] [2021-10-13 00:34:10,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:34:10,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:10,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:34:10,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:34:10,471 INFO L87 Difference]: Start difference. First operand 867 states and 1155 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:34:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:12,703 INFO L93 Difference]: Finished difference Result 1010 states and 1403 transitions. [2021-10-13 00:34:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:34:12,704 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2021-10-13 00:34:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:12,706 INFO L225 Difference]: With dead ends: 1010 [2021-10-13 00:34:12,707 INFO L226 Difference]: Without dead ends: 1010 [2021-10-13 00:34:12,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 348.5ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:34:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-10-13 00:34:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 867. [2021-10-13 00:34:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 683 states have (on average 1.322108345534407) internal successors, (903), 696 states have internal predecessors, (903), 105 states have call successors, (105), 55 states have call predecessors, (105), 78 states have return successors, (146), 122 states have call predecessors, (146), 99 states have call successors, (146) [2021-10-13 00:34:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1154 transitions. [2021-10-13 00:34:12,732 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1154 transitions. Word has length 60 [2021-10-13 00:34:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:12,733 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1154 transitions. [2021-10-13 00:34:12,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:34:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1154 transitions. [2021-10-13 00:34:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 00:34:12,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:12,737 INFO L512 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] [2021-10-13 00:34:12,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-13 00:34:12,738 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash -807463414, now seen corresponding path program 1 times [2021-10-13 00:34:12,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:12,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611771925] [2021-10-13 00:34:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:12,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:12,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:13,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:34:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:13,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:13,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611771925] [2021-10-13 00:34:13,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611771925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:13,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:13,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-13 00:34:13,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218915791] [2021-10-13 00:34:13,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:34:13,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:34:13,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:34:13,122 INFO L87 Difference]: Start difference. First operand 867 states and 1154 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:34:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:16,090 INFO L93 Difference]: Finished difference Result 1044 states and 1448 transitions. [2021-10-13 00:34:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:34:16,091 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2021-10-13 00:34:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:16,094 INFO L225 Difference]: With dead ends: 1044 [2021-10-13 00:34:16,094 INFO L226 Difference]: Without dead ends: 997 [2021-10-13 00:34:16,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 385.0ms TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:34:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-13 00:34:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 859. [2021-10-13 00:34:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 677 states have (on average 1.3175775480059084) internal successors, (892), 690 states have internal predecessors, (892), 103 states have call successors, (103), 55 states have call predecessors, (103), 78 states have return successors, (144), 120 states have call predecessors, (144), 97 states have call successors, (144) [2021-10-13 00:34:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1139 transitions. [2021-10-13 00:34:16,118 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1139 transitions. Word has length 60 [2021-10-13 00:34:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:16,119 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1139 transitions. [2021-10-13 00:34:16,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-13 00:34:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1139 transitions. [2021-10-13 00:34:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-13 00:34:16,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:16,123 INFO L512 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] [2021-10-13 00:34:16,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-13 00:34:16,124 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:16,125 INFO L82 PathProgramCache]: Analyzing trace with hash -819904678, now seen corresponding path program 1 times [2021-10-13 00:34:16,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:16,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517718676] [2021-10-13 00:34:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:16,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:34:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:16,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:16,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517718676] [2021-10-13 00:34:16,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517718676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:16,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:16,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:34:16,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309774449] [2021-10-13 00:34:16,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:34:16,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:34:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:34:16,463 INFO L87 Difference]: Start difference. First operand 859 states and 1139 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:18,894 INFO L93 Difference]: Finished difference Result 1015 states and 1423 transitions. [2021-10-13 00:34:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:34:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2021-10-13 00:34:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:18,898 INFO L225 Difference]: With dead ends: 1015 [2021-10-13 00:34:18,898 INFO L226 Difference]: Without dead ends: 1013 [2021-10-13 00:34:18,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 462.7ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:34:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2021-10-13 00:34:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 863. [2021-10-13 00:34:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 679 states have (on average 1.316642120765832) internal successors, (894), 694 states have internal predecessors, (894), 103 states have call successors, (103), 55 states have call predecessors, (103), 80 states have return successors, (160), 120 states have call predecessors, (160), 97 states have call successors, (160) [2021-10-13 00:34:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1157 transitions. [2021-10-13 00:34:18,922 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1157 transitions. Word has length 61 [2021-10-13 00:34:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:18,923 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 1157 transitions. [2021-10-13 00:34:18,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1157 transitions. [2021-10-13 00:34:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 00:34:18,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:18,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:18,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-13 00:34:18,928 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash 153196542, now seen corresponding path program 1 times [2021-10-13 00:34:18,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:18,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457449655] [2021-10-13 00:34:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:18,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-13 00:34:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:19,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:19,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457449655] [2021-10-13 00:34:19,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457449655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:19,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:19,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-10-13 00:34:19,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180123270] [2021-10-13 00:34:19,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:34:19,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:19,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:34:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:34:19,452 INFO L87 Difference]: Start difference. First operand 863 states and 1157 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:34:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:23,539 INFO L93 Difference]: Finished difference Result 1022 states and 1423 transitions. [2021-10-13 00:34:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:34:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2021-10-13 00:34:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:23,543 INFO L225 Difference]: With dead ends: 1022 [2021-10-13 00:34:23,543 INFO L226 Difference]: Without dead ends: 1001 [2021-10-13 00:34:23,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 619.8ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:34:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-10-13 00:34:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 861. [2021-10-13 00:34:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 678 states have (on average 1.3156342182890854) internal successors, (892), 693 states have internal predecessors, (892), 102 states have call successors, (102), 55 states have call predecessors, (102), 80 states have return successors, (159), 119 states have call predecessors, (159), 96 states have call successors, (159) [2021-10-13 00:34:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1153 transitions. [2021-10-13 00:34:23,567 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1153 transitions. Word has length 62 [2021-10-13 00:34:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:23,567 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1153 transitions. [2021-10-13 00:34:23,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:34:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1153 transitions. [2021-10-13 00:34:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:34:23,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:23,572 INFO L512 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] [2021-10-13 00:34:23,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-13 00:34:23,572 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:23,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:23,573 INFO L82 PathProgramCache]: Analyzing trace with hash -317898980, now seen corresponding path program 1 times [2021-10-13 00:34:23,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:23,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149633869] [2021-10-13 00:34:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:23,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:34:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:23,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:23,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149633869] [2021-10-13 00:34:23,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149633869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:23,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:23,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-10-13 00:34:23,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843459357] [2021-10-13 00:34:23,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:34:23,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:34:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:34:23,996 INFO L87 Difference]: Start difference. First operand 861 states and 1153 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:34:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:28,098 INFO L93 Difference]: Finished difference Result 1013 states and 1412 transitions. [2021-10-13 00:34:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:34:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-10-13 00:34:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:28,102 INFO L225 Difference]: With dead ends: 1013 [2021-10-13 00:34:28,102 INFO L226 Difference]: Without dead ends: 994 [2021-10-13 00:34:28,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 364.4ms TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:34:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-10-13 00:34:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 856. [2021-10-13 00:34:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 675 states have (on average 1.3155555555555556) internal successors, (888), 690 states have internal predecessors, (888), 101 states have call successors, (101), 55 states have call predecessors, (101), 79 states have return successors, (157), 117 states have call predecessors, (157), 95 states have call successors, (157) [2021-10-13 00:34:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1146 transitions. [2021-10-13 00:34:28,127 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1146 transitions. Word has length 63 [2021-10-13 00:34:28,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:28,127 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 1146 transitions. [2021-10-13 00:34:28,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:34:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1146 transitions. [2021-10-13 00:34:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:34:28,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:28,132 INFO L512 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] [2021-10-13 00:34:28,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-13 00:34:28,132 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 251959398, now seen corresponding path program 1 times [2021-10-13 00:34:28,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:28,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538878384] [2021-10-13 00:34:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:28,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:34:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:28,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:28,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538878384] [2021-10-13 00:34:28,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538878384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:28,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:28,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-10-13 00:34:28,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736407377] [2021-10-13 00:34:28,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:34:28,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:34:28,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:34:28,634 INFO L87 Difference]: Start difference. First operand 856 states and 1146 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:34:31,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:31,943 INFO L93 Difference]: Finished difference Result 1008 states and 1405 transitions. [2021-10-13 00:34:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:34:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2021-10-13 00:34:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:31,946 INFO L225 Difference]: With dead ends: 1008 [2021-10-13 00:34:31,946 INFO L226 Difference]: Without dead ends: 981 [2021-10-13 00:34:31,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 362.1ms TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:34:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-10-13 00:34:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 845. [2021-10-13 00:34:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 667 states have (on average 1.3163418290854574) internal successors, (878), 682 states have internal predecessors, (878), 99 states have call successors, (99), 55 states have call predecessors, (99), 78 states have return successors, (154), 114 states have call predecessors, (154), 93 states have call successors, (154) [2021-10-13 00:34:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1131 transitions. [2021-10-13 00:34:31,968 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1131 transitions. Word has length 69 [2021-10-13 00:34:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:31,969 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 1131 transitions. [2021-10-13 00:34:31,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:34:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1131 transitions. [2021-10-13 00:34:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 00:34:31,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:31,973 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:31,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-13 00:34:31,973 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:31,974 INFO L82 PathProgramCache]: Analyzing trace with hash -136722259, now seen corresponding path program 1 times [2021-10-13 00:34:31,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:31,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95260263] [2021-10-13 00:34:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:31,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:32,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:32,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95260263] [2021-10-13 00:34:32,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95260263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:32,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:32,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-10-13 00:34:32,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834115426] [2021-10-13 00:34:32,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:34:32,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:34:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:34:32,426 INFO L87 Difference]: Start difference. First operand 845 states and 1131 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:34:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:36,142 INFO L93 Difference]: Finished difference Result 995 states and 1386 transitions. [2021-10-13 00:34:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:34:36,142 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-10-13 00:34:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:36,144 INFO L225 Difference]: With dead ends: 995 [2021-10-13 00:34:36,145 INFO L226 Difference]: Without dead ends: 976 [2021-10-13 00:34:36,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 349.2ms TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:34:36,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-10-13 00:34:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 840. [2021-10-13 00:34:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 664 states have (on average 1.3162650602409638) internal successors, (874), 679 states have internal predecessors, (874), 98 states have call successors, (98), 55 states have call predecessors, (98), 77 states have return successors, (152), 112 states have call predecessors, (152), 92 states have call successors, (152) [2021-10-13 00:34:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1124 transitions. [2021-10-13 00:34:36,164 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1124 transitions. Word has length 62 [2021-10-13 00:34:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:36,164 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1124 transitions. [2021-10-13 00:34:36,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:34:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1124 transitions. [2021-10-13 00:34:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:34:36,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:36,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:36,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-13 00:34:36,168 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:36,169 INFO L82 PathProgramCache]: Analyzing trace with hash -937088575, now seen corresponding path program 1 times [2021-10-13 00:34:36,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:36,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546741147] [2021-10-13 00:34:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:36,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:34:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:36,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:36,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546741147] [2021-10-13 00:34:36,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546741147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:36,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:36,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-10-13 00:34:36,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424509129] [2021-10-13 00:34:36,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:34:36,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:34:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:34:36,678 INFO L87 Difference]: Start difference. First operand 840 states and 1124 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:34:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:39,985 INFO L93 Difference]: Finished difference Result 997 states and 1386 transitions. [2021-10-13 00:34:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:34:39,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2021-10-13 00:34:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:39,989 INFO L225 Difference]: With dead ends: 997 [2021-10-13 00:34:39,989 INFO L226 Difference]: Without dead ends: 975 [2021-10-13 00:34:39,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 632.9ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:34:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-10-13 00:34:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 838. [2021-10-13 00:34:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 663 states have (on average 1.315233785822021) internal successors, (872), 678 states have internal predecessors, (872), 97 states have call successors, (97), 55 states have call predecessors, (97), 77 states have return successors, (151), 111 states have call predecessors, (151), 91 states have call successors, (151) [2021-10-13 00:34:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1120 transitions. [2021-10-13 00:34:40,012 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1120 transitions. Word has length 66 [2021-10-13 00:34:40,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:40,012 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1120 transitions. [2021-10-13 00:34:40,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:34:40,013 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1120 transitions. [2021-10-13 00:34:40,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:34:40,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:40,016 INFO L512 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] [2021-10-13 00:34:40,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-13 00:34:40,016 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:40,017 INFO L82 PathProgramCache]: Analyzing trace with hash -972482111, now seen corresponding path program 1 times [2021-10-13 00:34:40,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:40,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470441780] [2021-10-13 00:34:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:40,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:40,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:40,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470441780] [2021-10-13 00:34:40,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470441780] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:40,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:40,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-10-13 00:34:40,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249120109] [2021-10-13 00:34:40,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:34:40,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:40,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:34:40,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:34:40,530 INFO L87 Difference]: Start difference. First operand 838 states and 1120 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:34:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:43,499 INFO L93 Difference]: Finished difference Result 994 states and 1379 transitions. [2021-10-13 00:34:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:34:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2021-10-13 00:34:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:43,502 INFO L225 Difference]: With dead ends: 994 [2021-10-13 00:34:43,502 INFO L226 Difference]: Without dead ends: 972 [2021-10-13 00:34:43,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 615.3ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:34:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-10-13 00:34:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 836. [2021-10-13 00:34:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 662 states have (on average 1.3141993957703928) internal successors, (870), 677 states have internal predecessors, (870), 96 states have call successors, (96), 55 states have call predecessors, (96), 77 states have return successors, (150), 110 states have call predecessors, (150), 90 states have call successors, (150) [2021-10-13 00:34:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1116 transitions. [2021-10-13 00:34:43,523 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1116 transitions. Word has length 67 [2021-10-13 00:34:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:43,523 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1116 transitions. [2021-10-13 00:34:43,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:34:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1116 transitions. [2021-10-13 00:34:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:34:43,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:43,527 INFO L512 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] [2021-10-13 00:34:43,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-13 00:34:43,528 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:43,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2145458307, now seen corresponding path program 1 times [2021-10-13 00:34:43,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:43,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832347359] [2021-10-13 00:34:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:43,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:34:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:43,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:43,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832347359] [2021-10-13 00:34:43,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832347359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:43,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:43,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-10-13 00:34:43,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384278818] [2021-10-13 00:34:43,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:34:43,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:34:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:34:43,992 INFO L87 Difference]: Start difference. First operand 836 states and 1116 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:34:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:47,218 INFO L93 Difference]: Finished difference Result 989 states and 1370 transitions. [2021-10-13 00:34:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:34:47,218 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2021-10-13 00:34:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:47,222 INFO L225 Difference]: With dead ends: 989 [2021-10-13 00:34:47,222 INFO L226 Difference]: Without dead ends: 968 [2021-10-13 00:34:47,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 596.8ms TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:34:47,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-10-13 00:34:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 834. [2021-10-13 00:34:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 661 states have (on average 1.313161875945537) internal successors, (868), 676 states have internal predecessors, (868), 95 states have call successors, (95), 55 states have call predecessors, (95), 77 states have return successors, (149), 109 states have call predecessors, (149), 89 states have call successors, (149) [2021-10-13 00:34:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1112 transitions. [2021-10-13 00:34:47,246 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1112 transitions. Word has length 63 [2021-10-13 00:34:47,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:47,246 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1112 transitions. [2021-10-13 00:34:47,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:34:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1112 transitions. [2021-10-13 00:34:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:34:47,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:47,250 INFO L512 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] [2021-10-13 00:34:47,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-13 00:34:47,250 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:47,251 INFO L82 PathProgramCache]: Analyzing trace with hash 727665943, now seen corresponding path program 1 times [2021-10-13 00:34:47,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:47,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120737334] [2021-10-13 00:34:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:47,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:34:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-13 00:34:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:47,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:47,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120737334] [2021-10-13 00:34:47,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120737334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:47,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:47,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 00:34:47,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948244437] [2021-10-13 00:34:47,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:34:47,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:34:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:34:47,509 INFO L87 Difference]: Start difference. First operand 834 states and 1112 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:49,282 INFO L93 Difference]: Finished difference Result 829 states and 1097 transitions. [2021-10-13 00:34:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:34:49,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2021-10-13 00:34:49,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:49,286 INFO L225 Difference]: With dead ends: 829 [2021-10-13 00:34:49,286 INFO L226 Difference]: Without dead ends: 825 [2021-10-13 00:34:49,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 243.5ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:34:49,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-10-13 00:34:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 704. [2021-10-13 00:34:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 558 states have (on average 1.3010752688172043) internal successors, (726), 573 states have internal predecessors, (726), 81 states have call successors, (81), 48 states have call predecessors, (81), 64 states have return successors, (102), 89 states have call predecessors, (102), 75 states have call successors, (102) [2021-10-13 00:34:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 909 transitions. [2021-10-13 00:34:49,302 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 909 transitions. Word has length 63 [2021-10-13 00:34:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:49,303 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 909 transitions. [2021-10-13 00:34:49,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 909 transitions. [2021-10-13 00:34:49,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:34:49,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:49,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:49,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-13 00:34:49,307 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1717945833, now seen corresponding path program 1 times [2021-10-13 00:34:49,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:49,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148804671] [2021-10-13 00:34:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:49,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-13 00:34:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-13 00:34:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-13 00:34:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:49,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:49,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148804671] [2021-10-13 00:34:49,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148804671] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:49,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:49,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 00:34:49,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878932344] [2021-10-13 00:34:49,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:34:49,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:34:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:34:49,590 INFO L87 Difference]: Start difference. First operand 704 states and 909 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-10-13 00:34:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:51,062 INFO L93 Difference]: Finished difference Result 772 states and 1012 transitions. [2021-10-13 00:34:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:34:51,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2021-10-13 00:34:51,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:51,065 INFO L225 Difference]: With dead ends: 772 [2021-10-13 00:34:51,065 INFO L226 Difference]: Without dead ends: 772 [2021-10-13 00:34:51,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 191.8ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:34:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-10-13 00:34:51,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 704. [2021-10-13 00:34:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 558 states have (on average 1.2956989247311828) internal successors, (723), 573 states have internal predecessors, (723), 81 states have call successors, (81), 48 states have call predecessors, (81), 64 states have return successors, (102), 89 states have call predecessors, (102), 75 states have call successors, (102) [2021-10-13 00:34:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 906 transitions. [2021-10-13 00:34:51,082 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 906 transitions. Word has length 66 [2021-10-13 00:34:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:51,082 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 906 transitions. [2021-10-13 00:34:51,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-10-13 00:34:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 906 transitions. [2021-10-13 00:34:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 00:34:51,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:51,085 INFO L512 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] [2021-10-13 00:34:51,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-13 00:34:51,086 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:51,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:51,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1167771296, now seen corresponding path program 1 times [2021-10-13 00:34:51,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:51,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704095854] [2021-10-13 00:34:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:51,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:34:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 00:34:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:51,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:51,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704095854] [2021-10-13 00:34:51,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704095854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:51,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:51,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:34:51,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311566701] [2021-10-13 00:34:51,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:34:51,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:34:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:34:51,405 INFO L87 Difference]: Start difference. First operand 704 states and 906 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:34:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:53,341 INFO L93 Difference]: Finished difference Result 796 states and 1044 transitions. [2021-10-13 00:34:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:34:53,341 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-10-13 00:34:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:53,343 INFO L225 Difference]: With dead ends: 796 [2021-10-13 00:34:53,344 INFO L226 Difference]: Without dead ends: 796 [2021-10-13 00:34:53,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 548.8ms TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:34:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-13 00:34:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 710. [2021-10-13 00:34:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 563 states have (on average 1.2948490230905862) internal successors, (729), 578 states have internal predecessors, (729), 82 states have call successors, (82), 48 states have call predecessors, (82), 64 states have return successors, (103), 90 states have call predecessors, (103), 76 states have call successors, (103) [2021-10-13 00:34:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 914 transitions. [2021-10-13 00:34:53,360 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 914 transitions. Word has length 65 [2021-10-13 00:34:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:53,360 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 914 transitions. [2021-10-13 00:34:53,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-13 00:34:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 914 transitions. [2021-10-13 00:34:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:34:53,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:53,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:53,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-13 00:34:53,364 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:53,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash -788931073, now seen corresponding path program 1 times [2021-10-13 00:34:53,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:53,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340405123] [2021-10-13 00:34:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:53,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:34:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-13 00:34:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:53,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:53,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340405123] [2021-10-13 00:34:53,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340405123] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:53,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:53,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-10-13 00:34:53,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568073350] [2021-10-13 00:34:53,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:34:53,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:34:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:34:53,732 INFO L87 Difference]: Start difference. First operand 710 states and 914 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:56,186 INFO L93 Difference]: Finished difference Result 813 states and 1062 transitions. [2021-10-13 00:34:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:34:56,187 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-10-13 00:34:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:56,188 INFO L225 Difference]: With dead ends: 813 [2021-10-13 00:34:56,188 INFO L226 Difference]: Without dead ends: 739 [2021-10-13 00:34:56,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 359.2ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:34:56,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-10-13 00:34:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 683. [2021-10-13 00:34:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 541 states have (on average 1.2809611829944547) internal successors, (693), 556 states have internal predecessors, (693), 77 states have call successors, (77), 48 states have call predecessors, (77), 64 states have return successors, (97), 85 states have call predecessors, (97), 71 states have call successors, (97) [2021-10-13 00:34:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 867 transitions. [2021-10-13 00:34:56,202 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 867 transitions. Word has length 66 [2021-10-13 00:34:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:56,203 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 867 transitions. [2021-10-13 00:34:56,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 867 transitions. [2021-10-13 00:34:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:34:56,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:56,205 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:34:56,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-13 00:34:56,206 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:56,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:56,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1490530947, now seen corresponding path program 1 times [2021-10-13 00:34:56,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:56,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832231430] [2021-10-13 00:34:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:56,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:34:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-13 00:34:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:56,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:56,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832231430] [2021-10-13 00:34:56,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832231430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:56,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:56,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:34:56,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249640318] [2021-10-13 00:34:56,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:34:56,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:34:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:34:56,530 INFO L87 Difference]: Start difference. First operand 683 states and 867 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:57,965 INFO L93 Difference]: Finished difference Result 726 states and 932 transitions. [2021-10-13 00:34:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:34:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-10-13 00:34:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:57,968 INFO L225 Difference]: With dead ends: 726 [2021-10-13 00:34:57,968 INFO L226 Difference]: Without dead ends: 726 [2021-10-13 00:34:57,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 364.5ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:34:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-10-13 00:34:57,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 673. [2021-10-13 00:34:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 533 states have (on average 1.277673545966229) internal successors, (681), 548 states have internal predecessors, (681), 75 states have call successors, (75), 48 states have call predecessors, (75), 64 states have return successors, (95), 83 states have call predecessors, (95), 69 states have call successors, (95) [2021-10-13 00:34:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 851 transitions. [2021-10-13 00:34:57,980 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 851 transitions. Word has length 66 [2021-10-13 00:34:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:57,980 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 851 transitions. [2021-10-13 00:34:57,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 851 transitions. [2021-10-13 00:34:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:34:57,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:57,982 INFO L512 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] [2021-10-13 00:34:57,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-13 00:34:57,983 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1087637683, now seen corresponding path program 1 times [2021-10-13 00:34:57,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:57,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070323723] [2021-10-13 00:34:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:57,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:34:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:34:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-13 00:34:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:34:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:34:58,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:34:58,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070323723] [2021-10-13 00:34:58,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070323723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:34:58,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:34:58,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:34:58,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223268667] [2021-10-13 00:34:58,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:34:58,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:34:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:34:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:34:58,283 INFO L87 Difference]: Start difference. First operand 673 states and 851 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:34:59,838 INFO L93 Difference]: Finished difference Result 722 states and 926 transitions. [2021-10-13 00:34:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:34:59,838 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-10-13 00:34:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:34:59,840 INFO L225 Difference]: With dead ends: 722 [2021-10-13 00:34:59,840 INFO L226 Difference]: Without dead ends: 717 [2021-10-13 00:34:59,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 399.9ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:34:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-10-13 00:34:59,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 668. [2021-10-13 00:34:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 529 states have (on average 1.277882797731569) internal successors, (676), 544 states have internal predecessors, (676), 74 states have call successors, (74), 48 states have call predecessors, (74), 64 states have return successors, (94), 82 states have call predecessors, (94), 68 states have call successors, (94) [2021-10-13 00:34:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 844 transitions. [2021-10-13 00:34:59,852 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 844 transitions. Word has length 67 [2021-10-13 00:34:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:34:59,853 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 844 transitions. [2021-10-13 00:34:59,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:34:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 844 transitions. [2021-10-13 00:34:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:34:59,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:34:59,855 INFO L512 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] [2021-10-13 00:34:59,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-13 00:34:59,856 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:34:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:34:59,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1213196842, now seen corresponding path program 1 times [2021-10-13 00:34:59,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:34:59,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665819379] [2021-10-13 00:34:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:34:59,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:34:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:34:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:34:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:34:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:00,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:00,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:00,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:00,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665819379] [2021-10-13 00:35:00,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665819379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:00,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:00,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 00:35:00,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108881979] [2021-10-13 00:35:00,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:35:00,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:35:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:35:00,115 INFO L87 Difference]: Start difference. First operand 668 states and 844 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:01,549 INFO L93 Difference]: Finished difference Result 823 states and 1052 transitions. [2021-10-13 00:35:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:35:01,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2021-10-13 00:35:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:01,551 INFO L225 Difference]: With dead ends: 823 [2021-10-13 00:35:01,551 INFO L226 Difference]: Without dead ends: 823 [2021-10-13 00:35:01,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 281.9ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:35:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-10-13 00:35:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 714. [2021-10-13 00:35:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 565 states have (on average 1.2707964601769912) internal successors, (718), 582 states have internal predecessors, (718), 76 states have call successors, (76), 50 states have call predecessors, (76), 72 states have return successors, (102), 90 states have call predecessors, (102), 70 states have call successors, (102) [2021-10-13 00:35:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 896 transitions. [2021-10-13 00:35:01,561 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 896 transitions. Word has length 67 [2021-10-13 00:35:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:01,561 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 896 transitions. [2021-10-13 00:35:01,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 896 transitions. [2021-10-13 00:35:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 00:35:01,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:01,563 INFO L512 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] [2021-10-13 00:35:01,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-13 00:35:01,563 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:01,563 INFO L82 PathProgramCache]: Analyzing trace with hash -601739544, now seen corresponding path program 1 times [2021-10-13 00:35:01,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:01,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035363897] [2021-10-13 00:35:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:01,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:01,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:01,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035363897] [2021-10-13 00:35:01,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035363897] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:01,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:01,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:35:01,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366416922] [2021-10-13 00:35:01,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:35:01,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:35:01,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:35:01,845 INFO L87 Difference]: Start difference. First operand 714 states and 896 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:03,653 INFO L93 Difference]: Finished difference Result 820 states and 1046 transitions. [2021-10-13 00:35:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:35:03,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2021-10-13 00:35:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:03,655 INFO L225 Difference]: With dead ends: 820 [2021-10-13 00:35:03,655 INFO L226 Difference]: Without dead ends: 820 [2021-10-13 00:35:03,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 552.5ms TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:35:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-10-13 00:35:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 714. [2021-10-13 00:35:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 565 states have (on average 1.2672566371681415) internal successors, (716), 582 states have internal predecessors, (716), 76 states have call successors, (76), 50 states have call predecessors, (76), 72 states have return successors, (102), 90 states have call predecessors, (102), 70 states have call successors, (102) [2021-10-13 00:35:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 894 transitions. [2021-10-13 00:35:03,666 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 894 transitions. Word has length 68 [2021-10-13 00:35:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:03,667 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 894 transitions. [2021-10-13 00:35:03,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 894 transitions. [2021-10-13 00:35:03,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 00:35:03,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:03,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:35:03,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-13 00:35:03,671 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:03,671 INFO L82 PathProgramCache]: Analyzing trace with hash -151974564, now seen corresponding path program 1 times [2021-10-13 00:35:03,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:03,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123213405] [2021-10-13 00:35:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:03,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:03,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:35:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-13 00:35:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:04,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:04,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:04,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123213405] [2021-10-13 00:35:04,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123213405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:04,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:04,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-10-13 00:35:04,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701784005] [2021-10-13 00:35:04,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 00:35:04,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 00:35:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:35:04,214 INFO L87 Difference]: Start difference. First operand 714 states and 894 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:35:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:07,191 INFO L93 Difference]: Finished difference Result 784 states and 993 transitions. [2021-10-13 00:35:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:35:07,191 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2021-10-13 00:35:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:07,193 INFO L225 Difference]: With dead ends: 784 [2021-10-13 00:35:07,193 INFO L226 Difference]: Without dead ends: 759 [2021-10-13 00:35:07,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 775.1ms TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 00:35:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-10-13 00:35:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 710. [2021-10-13 00:35:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 562 states have (on average 1.2669039145907472) internal successors, (712), 579 states have internal predecessors, (712), 75 states have call successors, (75), 50 states have call predecessors, (75), 72 states have return successors, (101), 89 states have call predecessors, (101), 69 states have call successors, (101) [2021-10-13 00:35:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 888 transitions. [2021-10-13 00:35:07,207 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 888 transitions. Word has length 70 [2021-10-13 00:35:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:07,207 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 888 transitions. [2021-10-13 00:35:07,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:35:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 888 transitions. [2021-10-13 00:35:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:35:07,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:07,210 INFO L512 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] [2021-10-13 00:35:07,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-13 00:35:07,210 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash -836181127, now seen corresponding path program 1 times [2021-10-13 00:35:07,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:07,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129330949] [2021-10-13 00:35:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:07,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-13 00:35:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:35:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:07,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:07,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129330949] [2021-10-13 00:35:07,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129330949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:07,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:07,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-10-13 00:35:07,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117382089] [2021-10-13 00:35:07,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:35:07,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:35:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:35:07,610 INFO L87 Difference]: Start difference. First operand 710 states and 888 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:09,709 INFO L93 Difference]: Finished difference Result 783 states and 991 transitions. [2021-10-13 00:35:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:35:09,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2021-10-13 00:35:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:09,711 INFO L225 Difference]: With dead ends: 783 [2021-10-13 00:35:09,711 INFO L226 Difference]: Without dead ends: 756 [2021-10-13 00:35:09,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 539.0ms TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:35:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-13 00:35:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 707. [2021-10-13 00:35:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 560 states have (on average 1.2660714285714285) internal successors, (709), 577 states have internal predecessors, (709), 74 states have call successors, (74), 50 states have call predecessors, (74), 72 states have return successors, (100), 88 states have call predecessors, (100), 68 states have call successors, (100) [2021-10-13 00:35:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 883 transitions. [2021-10-13 00:35:09,721 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 883 transitions. Word has length 69 [2021-10-13 00:35:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:09,721 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 883 transitions. [2021-10-13 00:35:09,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 883 transitions. [2021-10-13 00:35:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:35:09,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:09,724 INFO L512 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] [2021-10-13 00:35:09,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-10-13 00:35:09,724 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1918393902, now seen corresponding path program 1 times [2021-10-13 00:35:09,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:09,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635238281] [2021-10-13 00:35:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:09,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:09,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:09,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:35:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:35:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:10,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:10,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635238281] [2021-10-13 00:35:10,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635238281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:10,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:10,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:35:10,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913224475] [2021-10-13 00:35:10,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:35:10,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:35:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:35:10,003 INFO L87 Difference]: Start difference. First operand 707 states and 883 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:12,167 INFO L93 Difference]: Finished difference Result 756 states and 958 transitions. [2021-10-13 00:35:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:35:12,168 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2021-10-13 00:35:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:12,169 INFO L225 Difference]: With dead ends: 756 [2021-10-13 00:35:12,169 INFO L226 Difference]: Without dead ends: 751 [2021-10-13 00:35:12,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 455.2ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:35:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-10-13 00:35:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 702. [2021-10-13 00:35:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 556 states have (on average 1.2661870503597121) internal successors, (704), 573 states have internal predecessors, (704), 73 states have call successors, (73), 50 states have call predecessors, (73), 72 states have return successors, (99), 87 states have call predecessors, (99), 67 states have call successors, (99) [2021-10-13 00:35:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 876 transitions. [2021-10-13 00:35:12,180 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 876 transitions. Word has length 69 [2021-10-13 00:35:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:12,181 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 876 transitions. [2021-10-13 00:35:12,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 876 transitions. [2021-10-13 00:35:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:35:12,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:12,184 INFO L512 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] [2021-10-13 00:35:12,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-10-13 00:35:12,184 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:12,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2114383891, now seen corresponding path program 1 times [2021-10-13 00:35:12,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:12,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486738206] [2021-10-13 00:35:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:12,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:12,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:12,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486738206] [2021-10-13 00:35:12,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486738206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:12,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:12,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-10-13 00:35:12,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196388245] [2021-10-13 00:35:12,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:35:12,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:35:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:35:12,654 INFO L87 Difference]: Start difference. First operand 702 states and 876 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:15,400 INFO L93 Difference]: Finished difference Result 758 states and 958 transitions. [2021-10-13 00:35:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:35:15,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2021-10-13 00:35:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:15,402 INFO L225 Difference]: With dead ends: 758 [2021-10-13 00:35:15,402 INFO L226 Difference]: Without dead ends: 755 [2021-10-13 00:35:15,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 476.2ms TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:35:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-10-13 00:35:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 699. [2021-10-13 00:35:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 553 states have (on average 1.2603978300180831) internal successors, (697), 570 states have internal predecessors, (697), 73 states have call successors, (73), 50 states have call predecessors, (73), 72 states have return successors, (99), 87 states have call predecessors, (99), 67 states have call successors, (99) [2021-10-13 00:35:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 869 transitions. [2021-10-13 00:35:15,416 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 869 transitions. Word has length 69 [2021-10-13 00:35:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:15,417 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 869 transitions. [2021-10-13 00:35:15,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 869 transitions. [2021-10-13 00:35:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:35:15,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:15,419 INFO L512 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] [2021-10-13 00:35:15,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-10-13 00:35:15,420 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:15,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2114660721, now seen corresponding path program 1 times [2021-10-13 00:35:15,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:15,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034209246] [2021-10-13 00:35:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:15,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:15,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:15,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034209246] [2021-10-13 00:35:15,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034209246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:15,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:15,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:35:15,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147408638] [2021-10-13 00:35:15,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:35:15,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:15,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:35:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:35:15,739 INFO L87 Difference]: Start difference. First operand 699 states and 869 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:18,224 INFO L93 Difference]: Finished difference Result 806 states and 1021 transitions. [2021-10-13 00:35:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:35:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2021-10-13 00:35:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:18,226 INFO L225 Difference]: With dead ends: 806 [2021-10-13 00:35:18,226 INFO L226 Difference]: Without dead ends: 775 [2021-10-13 00:35:18,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 686.3ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:35:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-10-13 00:35:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 670. [2021-10-13 00:35:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 545 states have internal predecessors, (666), 72 states have call successors, (72), 49 states have call predecessors, (72), 68 states have return successors, (95), 83 states have call predecessors, (95), 66 states have call successors, (95) [2021-10-13 00:35:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 833 transitions. [2021-10-13 00:35:18,241 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 833 transitions. Word has length 69 [2021-10-13 00:35:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:18,241 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 833 transitions. [2021-10-13 00:35:18,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 833 transitions. [2021-10-13 00:35:18,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:35:18,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:18,244 INFO L512 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] [2021-10-13 00:35:18,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-13 00:35:18,245 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1980103703, now seen corresponding path program 1 times [2021-10-13 00:35:18,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:18,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361715968] [2021-10-13 00:35:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:18,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:18,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:18,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361715968] [2021-10-13 00:35:18,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361715968] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:18,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:18,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 00:35:18,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588836825] [2021-10-13 00:35:18,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:35:18,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:35:18,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:35:18,518 INFO L87 Difference]: Start difference. First operand 670 states and 833 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:19,888 INFO L93 Difference]: Finished difference Result 722 states and 905 transitions. [2021-10-13 00:35:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:35:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2021-10-13 00:35:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:19,890 INFO L225 Difference]: With dead ends: 722 [2021-10-13 00:35:19,890 INFO L226 Difference]: Without dead ends: 705 [2021-10-13 00:35:19,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 271.9ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:35:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-13 00:35:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 652. [2021-10-13 00:35:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 516 states have (on average 1.251937984496124) internal successors, (646), 531 states have internal predecessors, (646), 71 states have call successors, (71), 48 states have call predecessors, (71), 64 states have return successors, (91), 79 states have call predecessors, (91), 65 states have call successors, (91) [2021-10-13 00:35:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 808 transitions. [2021-10-13 00:35:19,902 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 808 transitions. Word has length 69 [2021-10-13 00:35:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:19,902 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 808 transitions. [2021-10-13 00:35:19,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 808 transitions. [2021-10-13 00:35:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 00:35:19,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:19,905 INFO L512 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] [2021-10-13 00:35:19,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-10-13 00:35:19,905 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2137250320, now seen corresponding path program 1 times [2021-10-13 00:35:19,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:19,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156707006] [2021-10-13 00:35:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:19,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:35:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-13 00:35:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:20,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:20,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156707006] [2021-10-13 00:35:20,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156707006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:20,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:20,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-10-13 00:35:20,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156587528] [2021-10-13 00:35:20,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:35:20,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:20,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:35:20,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:35:20,434 INFO L87 Difference]: Start difference. First operand 652 states and 808 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-10-13 00:35:23,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:23,309 INFO L93 Difference]: Finished difference Result 738 states and 932 transitions. [2021-10-13 00:35:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:35:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2021-10-13 00:35:23,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:23,311 INFO L225 Difference]: With dead ends: 738 [2021-10-13 00:35:23,311 INFO L226 Difference]: Without dead ends: 716 [2021-10-13 00:35:23,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 604.8ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:35:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-13 00:35:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 650. [2021-10-13 00:35:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 515 states have (on average 1.250485436893204) internal successors, (644), 530 states have internal predecessors, (644), 70 states have call successors, (70), 48 states have call predecessors, (70), 64 states have return successors, (90), 78 states have call predecessors, (90), 64 states have call successors, (90) [2021-10-13 00:35:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 804 transitions. [2021-10-13 00:35:23,319 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 804 transitions. Word has length 74 [2021-10-13 00:35:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:23,319 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 804 transitions. [2021-10-13 00:35:23,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-10-13 00:35:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 804 transitions. [2021-10-13 00:35:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 00:35:23,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:23,321 INFO L512 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] [2021-10-13 00:35:23,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-13 00:35:23,321 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1031688052, now seen corresponding path program 1 times [2021-10-13 00:35:23,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:23,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863932824] [2021-10-13 00:35:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:23,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:35:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 00:35:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:23,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:23,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863932824] [2021-10-13 00:35:23,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863932824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:23,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:23,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:35:23,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292951293] [2021-10-13 00:35:23,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:35:23,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:23,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:35:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:35:23,644 INFO L87 Difference]: Start difference. First operand 650 states and 804 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:35:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:25,214 INFO L93 Difference]: Finished difference Result 702 states and 881 transitions. [2021-10-13 00:35:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:35:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-10-13 00:35:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:25,216 INFO L225 Difference]: With dead ends: 702 [2021-10-13 00:35:25,217 INFO L226 Difference]: Without dead ends: 702 [2021-10-13 00:35:25,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 452.1ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:35:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-10-13 00:35:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 650. [2021-10-13 00:35:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 515 states have (on average 1.2485436893203883) internal successors, (643), 530 states have internal predecessors, (643), 70 states have call successors, (70), 48 states have call predecessors, (70), 64 states have return successors, (90), 78 states have call predecessors, (90), 64 states have call successors, (90) [2021-10-13 00:35:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 803 transitions. [2021-10-13 00:35:25,228 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 803 transitions. Word has length 71 [2021-10-13 00:35:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:25,228 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 803 transitions. [2021-10-13 00:35:25,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:35:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 803 transitions. [2021-10-13 00:35:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 00:35:25,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:25,231 INFO L512 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] [2021-10-13 00:35:25,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-10-13 00:35:25,231 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1212295246, now seen corresponding path program 1 times [2021-10-13 00:35:25,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:25,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796162673] [2021-10-13 00:35:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:25,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:35:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 00:35:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:25,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:25,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796162673] [2021-10-13 00:35:25,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796162673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:25,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:25,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-10-13 00:35:25,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346891669] [2021-10-13 00:35:25,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:35:25,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:35:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:35:25,731 INFO L87 Difference]: Start difference. First operand 650 states and 803 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:35:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:28,173 INFO L93 Difference]: Finished difference Result 735 states and 924 transitions. [2021-10-13 00:35:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:35:28,174 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2021-10-13 00:35:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:28,175 INFO L225 Difference]: With dead ends: 735 [2021-10-13 00:35:28,175 INFO L226 Difference]: Without dead ends: 700 [2021-10-13 00:35:28,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 596.9ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:35:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-13 00:35:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 645. [2021-10-13 00:35:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 511 states have (on average 1.2446183953033267) internal successors, (636), 526 states have internal predecessors, (636), 69 states have call successors, (69), 48 states have call predecessors, (69), 64 states have return successors, (88), 77 states have call predecessors, (88), 63 states have call successors, (88) [2021-10-13 00:35:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 793 transitions. [2021-10-13 00:35:28,183 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 793 transitions. Word has length 71 [2021-10-13 00:35:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:28,183 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 793 transitions. [2021-10-13 00:35:28,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-10-13 00:35:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 793 transitions. [2021-10-13 00:35:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 00:35:28,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:28,185 INFO L512 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] [2021-10-13 00:35:28,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-13 00:35:28,185 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:28,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1255722987, now seen corresponding path program 1 times [2021-10-13 00:35:28,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:28,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625517861] [2021-10-13 00:35:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:28,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:35:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 00:35:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:28,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:28,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625517861] [2021-10-13 00:35:28,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625517861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:28,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:28,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:35:28,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844335625] [2021-10-13 00:35:28,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:35:28,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:35:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:35:28,520 INFO L87 Difference]: Start difference. First operand 645 states and 793 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:35:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:30,072 INFO L93 Difference]: Finished difference Result 695 states and 867 transitions. [2021-10-13 00:35:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:35:30,073 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-10-13 00:35:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:30,074 INFO L225 Difference]: With dead ends: 695 [2021-10-13 00:35:30,074 INFO L226 Difference]: Without dead ends: 689 [2021-10-13 00:35:30,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 448.8ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:35:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-10-13 00:35:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 639. [2021-10-13 00:35:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 506 states have (on average 1.2450592885375493) internal successors, (630), 521 states have internal predecessors, (630), 68 states have call successors, (68), 48 states have call predecessors, (68), 64 states have return successors, (87), 76 states have call predecessors, (87), 62 states have call successors, (87) [2021-10-13 00:35:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 785 transitions. [2021-10-13 00:35:30,086 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 785 transitions. Word has length 71 [2021-10-13 00:35:30,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:30,086 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 785 transitions. [2021-10-13 00:35:30,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:35:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 785 transitions. [2021-10-13 00:35:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 00:35:30,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:30,089 INFO L512 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] [2021-10-13 00:35:30,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-10-13 00:35:30,089 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash 110398293, now seen corresponding path program 1 times [2021-10-13 00:35:30,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:30,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16369780] [2021-10-13 00:35:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:30,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:30,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:30,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16369780] [2021-10-13 00:35:30,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16369780] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:30,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:30,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-10-13 00:35:30,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381070506] [2021-10-13 00:35:30,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:35:30,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:35:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:35:30,567 INFO L87 Difference]: Start difference. First operand 639 states and 785 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:33,031 INFO L93 Difference]: Finished difference Result 756 states and 933 transitions. [2021-10-13 00:35:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 00:35:33,032 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2021-10-13 00:35:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:33,033 INFO L225 Difference]: With dead ends: 756 [2021-10-13 00:35:33,033 INFO L226 Difference]: Without dead ends: 731 [2021-10-13 00:35:33,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 577.2ms TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:35:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-10-13 00:35:33,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 645. [2021-10-13 00:35:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 512 states have (on average 1.234375) internal successors, (632), 527 states have internal predecessors, (632), 68 states have call successors, (68), 48 states have call predecessors, (68), 64 states have return successors, (87), 76 states have call predecessors, (87), 62 states have call successors, (87) [2021-10-13 00:35:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 787 transitions. [2021-10-13 00:35:33,042 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 787 transitions. Word has length 71 [2021-10-13 00:35:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:33,042 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 787 transitions. [2021-10-13 00:35:33,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 787 transitions. [2021-10-13 00:35:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 00:35:33,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:33,043 INFO L512 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] [2021-10-13 00:35:33,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-10-13 00:35:33,044 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash -955000686, now seen corresponding path program 1 times [2021-10-13 00:35:33,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:33,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017540384] [2021-10-13 00:35:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:33,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:35:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-13 00:35:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:33,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:33,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017540384] [2021-10-13 00:35:33,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017540384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:33,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:33,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-10-13 00:35:33,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359433197] [2021-10-13 00:35:33,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:35:33,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:35:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:35:33,552 INFO L87 Difference]: Start difference. First operand 645 states and 787 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-10-13 00:35:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:35,716 INFO L93 Difference]: Finished difference Result 717 states and 887 transitions. [2021-10-13 00:35:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:35:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2021-10-13 00:35:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:35,718 INFO L225 Difference]: With dead ends: 717 [2021-10-13 00:35:35,718 INFO L226 Difference]: Without dead ends: 691 [2021-10-13 00:35:35,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 624.4ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:35:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-10-13 00:35:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 643. [2021-10-13 00:35:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 510 states have (on average 1.2333333333333334) internal successors, (629), 525 states have internal predecessors, (629), 68 states have call successors, (68), 48 states have call predecessors, (68), 64 states have return successors, (87), 76 states have call predecessors, (87), 62 states have call successors, (87) [2021-10-13 00:35:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2021-10-13 00:35:35,729 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 77 [2021-10-13 00:35:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:35,730 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2021-10-13 00:35:35,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2021-10-13 00:35:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2021-10-13 00:35:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:35:35,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:35,732 INFO L512 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] [2021-10-13 00:35:35,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-10-13 00:35:35,733 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:35,733 INFO L82 PathProgramCache]: Analyzing trace with hash -111129446, now seen corresponding path program 1 times [2021-10-13 00:35:35,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:35,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5721908] [2021-10-13 00:35:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:35,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:35,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:35,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:35:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:36,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:36,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:36,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5721908] [2021-10-13 00:35:36,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5721908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:36,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:36,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:35:36,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087297785] [2021-10-13 00:35:36,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:35:36,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:35:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:35:36,032 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:35:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:37,496 INFO L93 Difference]: Finished difference Result 690 states and 853 transitions. [2021-10-13 00:35:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:35:37,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2021-10-13 00:35:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:37,497 INFO L225 Difference]: With dead ends: 690 [2021-10-13 00:35:37,497 INFO L226 Difference]: Without dead ends: 679 [2021-10-13 00:35:37,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 405.9ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:35:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-10-13 00:35:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 631. [2021-10-13 00:35:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 499 states have (on average 1.2284569138276553) internal successors, (613), 514 states have internal predecessors, (613), 67 states have call successors, (67), 48 states have call predecessors, (67), 64 states have return successors, (86), 75 states have call predecessors, (86), 61 states have call successors, (86) [2021-10-13 00:35:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 766 transitions. [2021-10-13 00:35:37,505 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 766 transitions. Word has length 73 [2021-10-13 00:35:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:37,505 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 766 transitions. [2021-10-13 00:35:37,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:35:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 766 transitions. [2021-10-13 00:35:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-13 00:35:37,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:37,506 INFO L512 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] [2021-10-13 00:35:37,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-10-13 00:35:37,507 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:37,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:37,507 INFO L82 PathProgramCache]: Analyzing trace with hash -2040120255, now seen corresponding path program 1 times [2021-10-13 00:35:37,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:37,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125506241] [2021-10-13 00:35:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:37,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-13 00:35:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:37,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:37,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125506241] [2021-10-13 00:35:37,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125506241] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:37,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:37,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-10-13 00:35:37,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427381457] [2021-10-13 00:35:37,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:35:37,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:35:37,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:35:37,926 INFO L87 Difference]: Start difference. First operand 631 states and 766 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:40,133 INFO L93 Difference]: Finished difference Result 696 states and 856 transitions. [2021-10-13 00:35:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:35:40,133 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2021-10-13 00:35:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:40,135 INFO L225 Difference]: With dead ends: 696 [2021-10-13 00:35:40,135 INFO L226 Difference]: Without dead ends: 677 [2021-10-13 00:35:40,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 307.2ms TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:35:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-10-13 00:35:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 629. [2021-10-13 00:35:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 498 states have (on average 1.2269076305220883) internal successors, (611), 513 states have internal predecessors, (611), 66 states have call successors, (66), 48 states have call predecessors, (66), 64 states have return successors, (85), 74 states have call predecessors, (85), 60 states have call successors, (85) [2021-10-13 00:35:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 762 transitions. [2021-10-13 00:35:40,143 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 762 transitions. Word has length 72 [2021-10-13 00:35:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:40,144 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 762 transitions. [2021-10-13 00:35:40,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:35:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 762 transitions. [2021-10-13 00:35:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:35:40,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:40,146 INFO L512 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] [2021-10-13 00:35:40,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-10-13 00:35:40,146 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1909315756, now seen corresponding path program 1 times [2021-10-13 00:35:40,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:40,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731914636] [2021-10-13 00:35:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:40,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-13 00:35:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:40,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:40,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731914636] [2021-10-13 00:35:40,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731914636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:40,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:40,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-10-13 00:35:40,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919198377] [2021-10-13 00:35:40,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:35:40,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:40,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:35:40,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:35:40,637 INFO L87 Difference]: Start difference. First operand 629 states and 762 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:35:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:45,817 INFO L93 Difference]: Finished difference Result 1384 states and 1695 transitions. [2021-10-13 00:35:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-13 00:35:45,818 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2021-10-13 00:35:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:45,820 INFO L225 Difference]: With dead ends: 1384 [2021-10-13 00:35:45,820 INFO L226 Difference]: Without dead ends: 1377 [2021-10-13 00:35:45,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 2058.0ms TimeCoverageRelationStatistics Valid=676, Invalid=2630, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 00:35:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-10-13 00:35:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1004. [2021-10-13 00:35:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 799 states have (on average 1.2453066332916145) internal successors, (995), 824 states have internal predecessors, (995), 101 states have call successors, (101), 79 states have call predecessors, (101), 103 states have return successors, (136), 107 states have call predecessors, (136), 95 states have call successors, (136) [2021-10-13 00:35:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1232 transitions. [2021-10-13 00:35:45,839 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1232 transitions. Word has length 73 [2021-10-13 00:35:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:45,840 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1232 transitions. [2021-10-13 00:35:45,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:35:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1232 transitions. [2021-10-13 00:35:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:35:45,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:45,843 INFO L512 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] [2021-10-13 00:35:45,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-10-13 00:35:45,844 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:45,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:45,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1706379286, now seen corresponding path program 1 times [2021-10-13 00:35:45,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:45,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748099578] [2021-10-13 00:35:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:45,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:45,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:45,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:46,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:46,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-13 00:35:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:46,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:46,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-13 00:35:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:46,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:46,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748099578] [2021-10-13 00:35:46,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748099578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:46,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:46,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-13 00:35:46,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931237036] [2021-10-13 00:35:46,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:35:46,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:35:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:35:46,169 INFO L87 Difference]: Start difference. First operand 1004 states and 1232 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:35:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:49,185 INFO L93 Difference]: Finished difference Result 1267 states and 1563 transitions. [2021-10-13 00:35:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:35:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2021-10-13 00:35:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:49,188 INFO L225 Difference]: With dead ends: 1267 [2021-10-13 00:35:49,188 INFO L226 Difference]: Without dead ends: 1267 [2021-10-13 00:35:49,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 669.7ms TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:35:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-10-13 00:35:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1095. [2021-10-13 00:35:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 870 states have (on average 1.2344827586206897) internal successors, (1074), 890 states have internal predecessors, (1074), 115 states have call successors, (115), 83 states have call predecessors, (115), 109 states have return successors, (152), 126 states have call predecessors, (152), 109 states have call successors, (152) [2021-10-13 00:35:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1341 transitions. [2021-10-13 00:35:49,206 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1341 transitions. Word has length 73 [2021-10-13 00:35:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:49,206 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 1341 transitions. [2021-10-13 00:35:49,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:35:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1341 transitions. [2021-10-13 00:35:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 00:35:49,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:49,210 INFO L512 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, 1] [2021-10-13 00:35:49,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-10-13 00:35:49,211 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash -513989019, now seen corresponding path program 1 times [2021-10-13 00:35:49,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:49,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512752838] [2021-10-13 00:35:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:49,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:35:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-10-13 00:35:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:49,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:49,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512752838] [2021-10-13 00:35:49,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512752838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:49,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:49,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-13 00:35:49,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947920005] [2021-10-13 00:35:49,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:35:49,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:49,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:35:49,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:35:49,527 INFO L87 Difference]: Start difference. First operand 1095 states and 1341 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:35:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:50,920 INFO L93 Difference]: Finished difference Result 1161 states and 1431 transitions. [2021-10-13 00:35:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:35:50,920 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2021-10-13 00:35:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:50,922 INFO L225 Difference]: With dead ends: 1161 [2021-10-13 00:35:50,922 INFO L226 Difference]: Without dead ends: 1131 [2021-10-13 00:35:50,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 407.2ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:35:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-10-13 00:35:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1061. [2021-10-13 00:35:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 842 states have (on average 1.2304038004750595) internal successors, (1036), 862 states have internal predecessors, (1036), 109 states have call successors, (109), 83 states have call predecessors, (109), 109 states have return successors, (144), 120 states have call predecessors, (144), 103 states have call successors, (144) [2021-10-13 00:35:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1289 transitions. [2021-10-13 00:35:50,936 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1289 transitions. Word has length 78 [2021-10-13 00:35:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:50,936 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1289 transitions. [2021-10-13 00:35:50,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:35:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1289 transitions. [2021-10-13 00:35:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 00:35:50,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:50,939 INFO L512 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] [2021-10-13 00:35:50,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-10-13 00:35:50,939 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash 314197659, now seen corresponding path program 1 times [2021-10-13 00:35:50,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:50,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150903514] [2021-10-13 00:35:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:50,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-13 00:35:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:35:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:35:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:51,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:51,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150903514] [2021-10-13 00:35:51,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150903514] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:51,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:51,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-13 00:35:51,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482892015] [2021-10-13 00:35:51,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:35:51,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:51,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:35:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:35:51,285 INFO L87 Difference]: Start difference. First operand 1061 states and 1289 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:35:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:52,737 INFO L93 Difference]: Finished difference Result 1101 states and 1347 transitions. [2021-10-13 00:35:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:35:52,737 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2021-10-13 00:35:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:52,739 INFO L225 Difference]: With dead ends: 1101 [2021-10-13 00:35:52,739 INFO L226 Difference]: Without dead ends: 1065 [2021-10-13 00:35:52,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 443.2ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:35:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-10-13 00:35:52,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1013. [2021-10-13 00:35:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 808 states have (on average 1.2326732673267327) internal successors, (996), 828 states have internal predecessors, (996), 99 states have call successors, (99), 79 states have call predecessors, (99), 105 states have return successors, (132), 110 states have call predecessors, (132), 93 states have call successors, (132) [2021-10-13 00:35:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1227 transitions. [2021-10-13 00:35:52,751 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1227 transitions. Word has length 75 [2021-10-13 00:35:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:52,751 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1227 transitions. [2021-10-13 00:35:52,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:35:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1227 transitions. [2021-10-13 00:35:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:35:52,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:52,754 INFO L512 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] [2021-10-13 00:35:52,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-10-13 00:35:52,754 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:52,754 INFO L82 PathProgramCache]: Analyzing trace with hash -901263887, now seen corresponding path program 1 times [2021-10-13 00:35:52,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:52,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711081765] [2021-10-13 00:35:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:52,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:35:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 00:35:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 00:35:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:35:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:35:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 00:35:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-10-13 00:35:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:35:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:35:53,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:35:53,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711081765] [2021-10-13 00:35:53,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711081765] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:35:53,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:35:53,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:35:53,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558623032] [2021-10-13 00:35:53,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:35:53,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:35:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:35:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:35:53,064 INFO L87 Difference]: Start difference. First operand 1013 states and 1227 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:35:54,424 INFO L93 Difference]: Finished difference Result 1061 states and 1293 transitions. [2021-10-13 00:35:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:35:54,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2021-10-13 00:35:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:35:54,426 INFO L225 Difference]: With dead ends: 1061 [2021-10-13 00:35:54,426 INFO L226 Difference]: Without dead ends: 1049 [2021-10-13 00:35:54,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 430.2ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:35:54,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-10-13 00:35:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 997. [2021-10-13 00:35:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 794 states have (on average 1.2317380352644836) internal successors, (978), 814 states have internal predecessors, (978), 97 states have call successors, (97), 79 states have call predecessors, (97), 105 states have return successors, (128), 108 states have call predecessors, (128), 91 states have call successors, (128) [2021-10-13 00:35:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1203 transitions. [2021-10-13 00:35:54,442 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1203 transitions. Word has length 73 [2021-10-13 00:35:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:35:54,442 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1203 transitions. [2021-10-13 00:35:54,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:35:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1203 transitions. [2021-10-13 00:35:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:35:54,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:35:54,446 INFO L512 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] [2021-10-13 00:35:54,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-10-13 00:35:54,446 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:35:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:35:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash -586736919, now seen corresponding path program 1 times [2021-10-13 00:35:54,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:35:54,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130461737] [2021-10-13 00:35:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:35:54,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:35:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:35:54,464 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:35:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:35:54,586 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:35:54,586 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:35:54,587 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:35:54,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:35:54,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-10-13 00:35:54,596 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:35:54,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:35:54 BoogieIcfgContainer [2021-10-13 00:35:54,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:35:54,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:35:54,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:35:54,776 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:35:54,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:32:23" (3/4) ... [2021-10-13 00:35:54,780 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:35:54,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:35:54,782 INFO L168 Benchmark]: Toolchain (without parser) took 213939.38 ms. Allocated memory was 123.7 MB in the beginning and 333.4 MB in the end (delta: 209.7 MB). Free memory was 83.2 MB in the beginning and 175.9 MB in the end (delta: -92.7 MB). Peak memory consumption was 116.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:54,791 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 123.7 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:35:54,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 905.76 ms. Allocated memory is still 123.7 MB. Free memory was 83.0 MB in the beginning and 81.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:54,793 INFO L168 Benchmark]: Boogie Preprocessor took 184.62 ms. Allocated memory is still 123.7 MB. Free memory was 81.2 MB in the beginning and 76.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:54,793 INFO L168 Benchmark]: RCFGBuilder took 1917.72 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 76.3 MB in the beginning and 82.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:54,793 INFO L168 Benchmark]: TraceAbstraction took 210917.22 ms. Allocated memory was 148.9 MB in the beginning and 333.4 MB in the end (delta: 184.5 MB). Free memory was 81.8 MB in the beginning and 175.9 MB in the end (delta: -94.1 MB). Peak memory consumption was 93.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:35:54,794 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 333.4 MB. Free memory is still 175.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:35:54,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 123.7 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 905.76 ms. Allocated memory is still 123.7 MB. Free memory was 83.0 MB in the beginning and 81.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 184.62 ms. Allocated memory is still 123.7 MB. Free memory was 81.2 MB in the beginning and 76.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1917.72 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 76.3 MB in the beginning and 82.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 210917.22 ms. Allocated memory was 148.9 MB in the beginning and 333.4 MB in the end (delta: 184.5 MB). Free memory was 81.8 MB in the beginning and 175.9 MB in the end (delta: -94.1 MB). Peak memory consumption was 93.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 333.4 MB. Free memory is still 175.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 59. Possible FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [\old(compFptr)=147534, \old(compRegistered)=147513, \old(customIrp)=147517, \old(DC)=147539, \old(DeviceUsageTypePaging)=147538, \old(Executive)=147536, \old(IPC)=147525, \old(KernelMode)=147521, \old(lowerDriverReturn)=147526, \old(MPR1)=147533, \old(MPR3)=147542, \old(myStatus)=147537, \old(NP)=147518, \old(pended)=147535, \old(pirp)=147540, \old(routine)=147514, \old(s)=147522, \old(setEventCalled)=147515, \old(SKIP1)=147520, \old(SKIP2)=147531, \old(Suspended)=147532, \old(UNLOADED)=147524, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=-4, DC=0, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=0, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1755] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=5, UNLOADED=0] [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=-5, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=-5, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=-5, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=-5, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=-5, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=-5, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=-5, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=-5, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=-5, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, Irp__PendingReturned=0, KernelMode=0, lcontext=-5, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioHPCdrDeviceControl(DeviceObject, Irp)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=-3, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=-2, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=-1073741637, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=-3, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioDeviceControl(devobj, pirp)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=-4, DC=2, DeviceUsageTypePaging=1, devobj=-3, Executive=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=-2, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - UnprovableResult [Line: 1717]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 521 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 210682.3ms, OverallIterations: 70, TraceHistogramMax: 2, EmptinessCheckTime: 214.0ms, AutomataDifference: 183196.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40034 SDtfs, 74308 SDslu, 98900 SDs, 0 SdLazy, 175683 SolverSat, 26283 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137993.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1883 GetRequests, 769 SyntacticMatches, 2 SemanticMatches, 1112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2773 ImplicationChecksByTransitivity, 30023.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1095occurred in iteration=66, InterpolantAutomatonStates: 913, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1762.8ms AutomataMinimizationTime, 69 MinimizatonAttempts, 8926 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 364.8ms SsaConstructionTime, 1213.1ms SatisfiabilityAnalysisTime, 22587.0ms InterpolantComputationTime, 4193 NumberOfCodeBlocks, 4193 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 4050 ConstructedInterpolants, 0 QuantifiedInterpolants, 22435 SizeOfPredicates, 4 NumberOfNonLiveVariables, 871 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 70 InterpolantComputations, 68 PerfectInterpolantSequences, 5/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:35:54,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:35:57,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:35:57,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:35:57,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:35:57,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:35:57,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:35:57,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:35:57,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:35:57,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:35:57,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:35:57,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:35:57,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:35:57,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:35:57,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:35:57,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:35:57,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:35:57,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:35:57,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:35:57,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:35:57,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:35:57,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:35:57,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:35:57,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:35:57,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:35:57,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:35:57,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:35:57,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:35:57,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:35:57,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:35:57,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:35:57,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:35:57,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:35:57,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:35:57,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:35:57,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:35:57,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:35:57,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:35:57,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:35:57,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:35:57,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:35:57,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:35:57,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:35:57,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:35:57,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:35:57,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:35:57,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:35:57,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:35:57,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:35:57,875 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:35:57,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:35:57,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:35:57,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:35:57,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:35:57,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:35:57,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:35:57,878 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:35:57,878 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:35:57,879 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:35:57,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:35:57,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:35:57,880 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:35:57,880 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:35:57,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:35:57,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:35:57,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:35:57,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:35:57,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:35:57,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:35:57,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:35:57,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:35:57,882 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:35:57,883 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:35:57,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:35:57,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:35:57,884 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_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602ea7c33e3d58a05b038901c89b84d09b02e08d [2021-10-13 00:35:58,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:35:58,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:35:58,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:35:58,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:35:58,398 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:35:58,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-10-13 00:35:58,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/88909d96c/a74ab823b8924202bd3a3e75a45212d1/FLAG11ecdd982 [2021-10-13 00:35:59,416 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:35:59,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-10-13 00:35:59,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/88909d96c/a74ab823b8924202bd3a3e75a45212d1/FLAG11ecdd982 [2021-10-13 00:35:59,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/data/88909d96c/a74ab823b8924202bd3a3e75a45212d1 [2021-10-13 00:35:59,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:35:59,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:35:59,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:35:59,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:35:59,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:35:59,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:35:59" (1/1) ... [2021-10-13 00:35:59,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac213cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:35:59, skipping insertion in model container [2021-10-13 00:35:59,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:35:59" (1/1) ... [2021-10-13 00:35:59,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:35:59,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:35:59,867 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_8909d629-470b-4cf1-83b1-f3e515a75191/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-10-13 00:36:00,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:36:00,223 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:36:00,241 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_8909d629-470b-4cf1-83b1-f3e515a75191/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-10-13 00:36:00,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:36:00,401 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:36:00,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00 WrapperNode [2021-10-13 00:36:00,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:36:00,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:36:00,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:36:00,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:36:00,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:36:00,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:36:00,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:36:00,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:36:00,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (1/1) ... [2021-10-13 00:36:00,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:36:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:36:00,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:36:00,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:36:00,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:36:00,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:36:00,712 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:36:00,712 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-10-13 00:36:00,713 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-10-13 00:36:00,713 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-10-13 00:36:00,715 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-10-13 00:36:00,716 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2021-10-13 00:36:00,716 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2021-10-13 00:36:00,716 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2021-10-13 00:36:00,716 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-10-13 00:36:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-10-13 00:36:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2021-10-13 00:36:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-10-13 00:36:00,717 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2021-10-13 00:36:00,718 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2021-10-13 00:36:00,718 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2021-10-13 00:36:00,718 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-10-13 00:36:00,718 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2021-10-13 00:36:00,718 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-10-13 00:36:00,719 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2021-10-13 00:36:00,719 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2021-10-13 00:36:00,719 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-10-13 00:36:00,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:36:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-10-13 00:36:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-10-13 00:36:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-10-13 00:36:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-10-13 00:36:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-10-13 00:36:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-10-13 00:36:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2021-10-13 00:36:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:36:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:36:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:36:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:36:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-13 00:36:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:36:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-10-13 00:36:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-10-13 00:36:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-10-13 00:36:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2021-10-13 00:36:00,749 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2021-10-13 00:36:00,749 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2021-10-13 00:36:00,749 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-10-13 00:36:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-10-13 00:36:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2021-10-13 00:36:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-10-13 00:36:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2021-10-13 00:36:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2021-10-13 00:36:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-10-13 00:36:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2021-10-13 00:36:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-10-13 00:36:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2021-10-13 00:36:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-10-13 00:36:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-10-13 00:36:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-10-13 00:36:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-10-13 00:36:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2021-10-13 00:36:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-10-13 00:36:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-10-13 00:36:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-10-13 00:36:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2021-10-13 00:36:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2021-10-13 00:36:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-10-13 00:36:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:36:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-10-13 00:36:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:36:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:36:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:36:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 00:36:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 00:36:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:36:01,382 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:01,534 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-10-13 00:36:01,534 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-10-13 00:36:01,541 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:01,616 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-10-13 00:36:01,617 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-10-13 00:36:01,656 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:01,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-10-13 00:36:01,692 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-10-13 00:36:01,796 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:01,859 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-10-13 00:36:01,859 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0bv32; [2021-10-13 00:36:01,859 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-10-13 00:36:01,864 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:02,072 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2021-10-13 00:36:02,072 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2021-10-13 00:36:02,074 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:02,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-10-13 00:36:02,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-10-13 00:36:02,173 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:02,194 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-10-13 00:36:02,195 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-10-13 00:36:02,200 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:02,440 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2021-10-13 00:36:02,441 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2021-10-13 00:36:02,458 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:36:02,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-13 00:36:02,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-13 00:36:02,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:36:02,501 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-13 00:36:02,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:36:02 BoogieIcfgContainer [2021-10-13 00:36:02,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:36:02,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:36:02,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:36:02,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:36:02,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:35:59" (1/3) ... [2021-10-13 00:36:02,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3b4f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:36:02, skipping insertion in model container [2021-10-13 00:36:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:36:00" (2/3) ... [2021-10-13 00:36:02,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3b4f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:36:02, skipping insertion in model container [2021-10-13 00:36:02,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:36:02" (3/3) ... [2021-10-13 00:36:02,516 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2021-10-13 00:36:02,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:36:02,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 00:36:02,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:36:02,585 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, mConcurrency=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 [2021-10-13 00:36:02,586 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 00:36:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 518 states, 383 states have (on average 1.4908616187989556) internal successors, (571), 405 states have internal predecessors, (571), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2021-10-13 00:36:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:36:02,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:02,640 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:36:02,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:02,666 INFO L82 PathProgramCache]: Analyzing trace with hash 633313405, now seen corresponding path program 1 times [2021-10-13 00:36:02,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:02,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732174757] [2021-10-13 00:36:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:02,689 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:02,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:02,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:02,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:36:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:03,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 00:36:03,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:03,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:03,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:03,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732174757] [2021-10-13 00:36:03,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732174757] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:03,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:03,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 00:36:03,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672445327] [2021-10-13 00:36:03,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:36:03,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:36:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:36:03,292 INFO L87 Difference]: Start difference. First operand has 518 states, 383 states have (on average 1.4908616187989556) internal successors, (571), 405 states have internal predecessors, (571), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:36:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:03,400 INFO L93 Difference]: Finished difference Result 515 states and 755 transitions. [2021-10-13 00:36:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:36:03,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-10-13 00:36:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:03,429 INFO L225 Difference]: With dead ends: 515 [2021-10-13 00:36:03,429 INFO L226 Difference]: Without dead ends: 509 [2021-10-13 00:36:03,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:36:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-10-13 00:36:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2021-10-13 00:36:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4603174603174602) internal successors, (552), 397 states have internal predecessors, (552), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-10-13 00:36:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 741 transitions. [2021-10-13 00:36:03,560 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 741 transitions. Word has length 15 [2021-10-13 00:36:03,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:03,561 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 741 transitions. [2021-10-13 00:36:03,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 10.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:36:03,562 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 741 transitions. [2021-10-13 00:36:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:36:03,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:03,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:36:03,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:03,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:03,780 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:03,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1738610777, now seen corresponding path program 1 times [2021-10-13 00:36:03,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:03,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944470689] [2021-10-13 00:36:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:03,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:03,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:03,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:36:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:04,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:36:04,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:04,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:04,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:04,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944470689] [2021-10-13 00:36:04,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944470689] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:04,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:04,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:36:04,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331146480] [2021-10-13 00:36:04,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:36:04,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:36:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:04,281 INFO L87 Difference]: Start difference. First operand 509 states and 741 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:36:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:04,451 INFO L93 Difference]: Finished difference Result 514 states and 747 transitions. [2021-10-13 00:36:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:36:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-10-13 00:36:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:04,463 INFO L225 Difference]: With dead ends: 514 [2021-10-13 00:36:04,463 INFO L226 Difference]: Without dead ends: 509 [2021-10-13 00:36:04,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-10-13 00:36:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2021-10-13 00:36:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 378 states have (on average 1.4576719576719577) internal successors, (551), 397 states have internal predecessors, (551), 103 states have call successors, (103), 29 states have call predecessors, (103), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-10-13 00:36:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 740 transitions. [2021-10-13 00:36:04,555 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 740 transitions. Word has length 20 [2021-10-13 00:36:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:04,555 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 740 transitions. [2021-10-13 00:36:04,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 00:36:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 740 transitions. [2021-10-13 00:36:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:36:04,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:04,558 INFO L512 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] [2021-10-13 00:36:04,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:04,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:04,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:04,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:04,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1016281706, now seen corresponding path program 1 times [2021-10-13 00:36:04,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:04,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332022860] [2021-10-13 00:36:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:04,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:04,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:04,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:04,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:36:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:05,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:36:05,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:05,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:05,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:05,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332022860] [2021-10-13 00:36:05,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332022860] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:05,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:05,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-10-13 00:36:05,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549758447] [2021-10-13 00:36:05,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:36:05,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:36:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:36:05,390 INFO L87 Difference]: Start difference. First operand 509 states and 740 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:36:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:06,348 INFO L93 Difference]: Finished difference Result 675 states and 960 transitions. [2021-10-13 00:36:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:36:06,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2021-10-13 00:36:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:06,361 INFO L225 Difference]: With dead ends: 675 [2021-10-13 00:36:06,367 INFO L226 Difference]: Without dead ends: 674 [2021-10-13 00:36:06,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:36:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-10-13 00:36:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 654. [2021-10-13 00:36:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 494 states have (on average 1.4129554655870444) internal successors, (698), 501 states have internal predecessors, (698), 112 states have call successors, (112), 40 states have call predecessors, (112), 47 states have return successors, (124), 118 states have call predecessors, (124), 99 states have call successors, (124) [2021-10-13 00:36:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 934 transitions. [2021-10-13 00:36:06,433 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 934 transitions. Word has length 25 [2021-10-13 00:36:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:06,433 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 934 transitions. [2021-10-13 00:36:06,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:36:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 934 transitions. [2021-10-13 00:36:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:36:06,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:06,448 INFO L512 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] [2021-10-13 00:36:06,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:06,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:06,675 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:06,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1367852756, now seen corresponding path program 1 times [2021-10-13 00:36:06,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:06,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852482824] [2021-10-13 00:36:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:06,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:06,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:06,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:06,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:36:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:07,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:36:07,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:07,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:07,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:07,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852482824] [2021-10-13 00:36:07,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852482824] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:07,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:07,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:36:07,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295230107] [2021-10-13 00:36:07,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:36:07,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:36:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:07,331 INFO L87 Difference]: Start difference. First operand 654 states and 934 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:36:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:07,388 INFO L93 Difference]: Finished difference Result 823 states and 1156 transitions. [2021-10-13 00:36:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:36:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-10-13 00:36:07,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:07,397 INFO L225 Difference]: With dead ends: 823 [2021-10-13 00:36:07,397 INFO L226 Difference]: Without dead ends: 823 [2021-10-13 00:36:07,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-10-13 00:36:07,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 769. [2021-10-13 00:36:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 595 states have (on average 1.411764705882353) internal successors, (840), 597 states have internal predecessors, (840), 114 states have call successors, (114), 46 states have call predecessors, (114), 59 states have return successors, (140), 128 states have call predecessors, (140), 104 states have call successors, (140) [2021-10-13 00:36:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1094 transitions. [2021-10-13 00:36:07,480 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1094 transitions. Word has length 30 [2021-10-13 00:36:07,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:07,481 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1094 transitions. [2021-10-13 00:36:07,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:36:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1094 transitions. [2021-10-13 00:36:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:36:07,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:07,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:36:07,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:07,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:07,691 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:07,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1062919399, now seen corresponding path program 1 times [2021-10-13 00:36:07,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:07,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692514909] [2021-10-13 00:36:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:07,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:07,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:07,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:07,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:36:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:08,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:36:08,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:08,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:08,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:08,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692514909] [2021-10-13 00:36:08,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692514909] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:08,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:08,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:36:08,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142210154] [2021-10-13 00:36:08,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:36:08,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:36:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:36:08,596 INFO L87 Difference]: Start difference. First operand 769 states and 1094 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 6 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:36:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:09,899 INFO L93 Difference]: Finished difference Result 910 states and 1290 transitions. [2021-10-13 00:36:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:36:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 6 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2021-10-13 00:36:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:09,906 INFO L225 Difference]: With dead ends: 910 [2021-10-13 00:36:09,906 INFO L226 Difference]: Without dead ends: 910 [2021-10-13 00:36:09,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 70.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:36:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-10-13 00:36:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 815. [2021-10-13 00:36:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 633 states have (on average 1.4060031595576619) internal successors, (890), 635 states have internal predecessors, (890), 118 states have call successors, (118), 50 states have call predecessors, (118), 63 states have return successors, (154), 132 states have call predecessors, (154), 108 states have call successors, (154) [2021-10-13 00:36:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1162 transitions. [2021-10-13 00:36:09,951 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1162 transitions. Word has length 31 [2021-10-13 00:36:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:09,952 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1162 transitions. [2021-10-13 00:36:09,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 6 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:36:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1162 transitions. [2021-10-13 00:36:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:36:09,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:09,956 INFO L512 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] [2021-10-13 00:36:09,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:10,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:10,172 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:10,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:10,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1821153895, now seen corresponding path program 1 times [2021-10-13 00:36:10,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:10,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899553026] [2021-10-13 00:36:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:10,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:10,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:10,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:10,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:36:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:10,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:36:10,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:10,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:10,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:10,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899553026] [2021-10-13 00:36:10,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899553026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:10,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:10,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-10-13 00:36:10,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151496342] [2021-10-13 00:36:10,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:36:10,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:36:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:36:10,891 INFO L87 Difference]: Start difference. First operand 815 states and 1162 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:36:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:11,729 INFO L93 Difference]: Finished difference Result 814 states and 1159 transitions. [2021-10-13 00:36:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:36:11,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-10-13 00:36:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:11,737 INFO L225 Difference]: With dead ends: 814 [2021-10-13 00:36:11,737 INFO L226 Difference]: Without dead ends: 814 [2021-10-13 00:36:11,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:36:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-10-13 00:36:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2021-10-13 00:36:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 633 states have (on average 1.4028436018957346) internal successors, (888), 634 states have internal predecessors, (888), 117 states have call successors, (117), 50 states have call predecessors, (117), 63 states have return successors, (154), 132 states have call predecessors, (154), 108 states have call successors, (154) [2021-10-13 00:36:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1159 transitions. [2021-10-13 00:36:11,781 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1159 transitions. Word has length 36 [2021-10-13 00:36:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:11,782 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1159 transitions. [2021-10-13 00:36:11,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:36:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1159 transitions. [2021-10-13 00:36:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:36:11,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:11,786 INFO L512 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] [2021-10-13 00:36:11,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:12,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:12,003 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:12,004 INFO L82 PathProgramCache]: Analyzing trace with hash -591738262, now seen corresponding path program 1 times [2021-10-13 00:36:12,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:12,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294818918] [2021-10-13 00:36:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:12,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:12,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:12,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:12,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:36:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:12,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:36:12,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:12,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:12,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:12,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294818918] [2021-10-13 00:36:12,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294818918] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:12,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:12,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:36:12,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292597462] [2021-10-13 00:36:12,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:36:12,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:36:12,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:36:12,674 INFO L87 Difference]: Start difference. First operand 814 states and 1159 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:36:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:12,807 INFO L93 Difference]: Finished difference Result 1008 states and 1397 transitions. [2021-10-13 00:36:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:36:12,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-10-13 00:36:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:12,820 INFO L225 Difference]: With dead ends: 1008 [2021-10-13 00:36:12,820 INFO L226 Difference]: Without dead ends: 1008 [2021-10-13 00:36:12,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:36:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-10-13 00:36:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 828. [2021-10-13 00:36:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 651 states have (on average 1.400921658986175) internal successors, (912), 653 states have internal predecessors, (912), 112 states have call successors, (112), 50 states have call predecessors, (112), 64 states have return successors, (149), 127 states have call predecessors, (149), 103 states have call successors, (149) [2021-10-13 00:36:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1173 transitions. [2021-10-13 00:36:12,870 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1173 transitions. Word has length 39 [2021-10-13 00:36:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:12,870 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1173 transitions. [2021-10-13 00:36:12,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:36:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1173 transitions. [2021-10-13 00:36:12,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 00:36:12,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:12,876 INFO L512 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] [2021-10-13 00:36:12,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:13,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:13,091 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:13,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1528077449, now seen corresponding path program 1 times [2021-10-13 00:36:13,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:13,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778804707] [2021-10-13 00:36:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:13,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:13,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:13,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:13,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 00:36:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:13,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:36:13,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:13,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:13,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:13,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778804707] [2021-10-13 00:36:13,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778804707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:13,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:13,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:36:13,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104397647] [2021-10-13 00:36:13,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:36:13,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:36:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:13,960 INFO L87 Difference]: Start difference. First operand 828 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:36:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:14,015 INFO L93 Difference]: Finished difference Result 910 states and 1272 transitions. [2021-10-13 00:36:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:36:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-10-13 00:36:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:14,023 INFO L225 Difference]: With dead ends: 910 [2021-10-13 00:36:14,023 INFO L226 Difference]: Without dead ends: 910 [2021-10-13 00:36:14,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-10-13 00:36:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 854. [2021-10-13 00:36:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 675 states have (on average 1.4103703703703703) internal successors, (952), 686 states have internal predecessors, (952), 114 states have call successors, (114), 53 states have call predecessors, (114), 64 states have return successors, (142), 119 states have call predecessors, (142), 106 states have call successors, (142) [2021-10-13 00:36:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1208 transitions. [2021-10-13 00:36:14,063 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1208 transitions. Word has length 40 [2021-10-13 00:36:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:14,089 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1208 transitions. [2021-10-13 00:36:14,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 00:36:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1208 transitions. [2021-10-13 00:36:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 00:36:14,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:14,096 INFO L512 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] [2021-10-13 00:36:14,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-13 00:36:14,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:14,314 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:14,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:14,315 INFO L82 PathProgramCache]: Analyzing trace with hash -751837642, now seen corresponding path program 1 times [2021-10-13 00:36:14,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:14,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084160359] [2021-10-13 00:36:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:14,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:14,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:14,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:14,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 00:36:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:14,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:36:14,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:14,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:15,042 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:15,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084160359] [2021-10-13 00:36:15,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084160359] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:15,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:15,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-10-13 00:36:15,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410074168] [2021-10-13 00:36:15,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:36:15,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:36:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:36:15,044 INFO L87 Difference]: Start difference. First operand 854 states and 1208 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:36:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:15,580 INFO L93 Difference]: Finished difference Result 766 states and 1066 transitions. [2021-10-13 00:36:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:36:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2021-10-13 00:36:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:15,587 INFO L225 Difference]: With dead ends: 766 [2021-10-13 00:36:15,587 INFO L226 Difference]: Without dead ends: 766 [2021-10-13 00:36:15,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:36:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-10-13 00:36:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 732. [2021-10-13 00:36:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 572 states have (on average 1.4038461538461537) internal successors, (803), 583 states have internal predecessors, (803), 106 states have call successors, (106), 46 states have call predecessors, (106), 53 states have return successors, (119), 107 states have call predecessors, (119), 98 states have call successors, (119) [2021-10-13 00:36:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1028 transitions. [2021-10-13 00:36:15,620 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1028 transitions. Word has length 47 [2021-10-13 00:36:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:15,621 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1028 transitions. [2021-10-13 00:36:15,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:36:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1028 transitions. [2021-10-13 00:36:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 00:36:15,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:15,627 INFO L512 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] [2021-10-13 00:36:15,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:15,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:15,845 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1459738846, now seen corresponding path program 1 times [2021-10-13 00:36:15,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:15,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115168907] [2021-10-13 00:36:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:15,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:15,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:15,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:15,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 00:36:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:16,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:36:16,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:16,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:16,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:16,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115168907] [2021-10-13 00:36:16,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115168907] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:16,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:16,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:36:16,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388017412] [2021-10-13 00:36:16,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:36:16,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:36:16,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:16,671 INFO L87 Difference]: Start difference. First operand 732 states and 1028 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:36:16,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:16,708 INFO L93 Difference]: Finished difference Result 756 states and 1052 transitions. [2021-10-13 00:36:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:36:16,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2021-10-13 00:36:16,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:16,716 INFO L225 Difference]: With dead ends: 756 [2021-10-13 00:36:16,716 INFO L226 Difference]: Without dead ends: 756 [2021-10-13 00:36:16,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-13 00:36:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 731. [2021-10-13 00:36:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 571 states have (on average 1.4010507880910683) internal successors, (800), 582 states have internal predecessors, (800), 106 states have call successors, (106), 46 states have call predecessors, (106), 53 states have return successors, (117), 107 states have call predecessors, (117), 98 states have call successors, (117) [2021-10-13 00:36:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1023 transitions. [2021-10-13 00:36:16,750 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1023 transitions. Word has length 47 [2021-10-13 00:36:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:16,751 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 1023 transitions. [2021-10-13 00:36:16,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:36:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1023 transitions. [2021-10-13 00:36:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 00:36:16,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:16,755 INFO L512 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] [2021-10-13 00:36:16,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:16,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:16,973 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1711019189, now seen corresponding path program 1 times [2021-10-13 00:36:16,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:16,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975491188] [2021-10-13 00:36:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:16,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:16,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:16,976 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:17,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 00:36:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:17,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:36:17,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:17,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:18,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:18,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975491188] [2021-10-13 00:36:18,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975491188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:18,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:18,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 11 [2021-10-13 00:36:18,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950181067] [2021-10-13 00:36:18,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:36:18,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:36:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:36:18,398 INFO L87 Difference]: Start difference. First operand 731 states and 1023 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-10-13 00:36:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:20,400 INFO L93 Difference]: Finished difference Result 1001 states and 1433 transitions. [2021-10-13 00:36:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:36:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2021-10-13 00:36:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:20,409 INFO L225 Difference]: With dead ends: 1001 [2021-10-13 00:36:20,409 INFO L226 Difference]: Without dead ends: 1001 [2021-10-13 00:36:20,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 217.8ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:36:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-10-13 00:36:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 794. [2021-10-13 00:36:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 623 states have (on average 1.3948635634028892) internal successors, (869), 635 states have internal predecessors, (869), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2021-10-13 00:36:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1110 transitions. [2021-10-13 00:36:20,450 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1110 transitions. Word has length 48 [2021-10-13 00:36:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:20,450 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 1110 transitions. [2021-10-13 00:36:20,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-10-13 00:36:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1110 transitions. [2021-10-13 00:36:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:36:20,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:20,454 INFO L512 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] [2021-10-13 00:36:20,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:20,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:20,672 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:20,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash -17559376, now seen corresponding path program 1 times [2021-10-13 00:36:20,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:20,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635012409] [2021-10-13 00:36:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:20,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:20,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:20,675 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:20,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:36:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:21,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:36:21,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:21,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:22,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:22,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635012409] [2021-10-13 00:36:22,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635012409] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:22,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:22,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 11 [2021-10-13 00:36:22,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555498926] [2021-10-13 00:36:22,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:36:22,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:36:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:36:22,113 INFO L87 Difference]: Start difference. First operand 794 states and 1110 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-10-13 00:36:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:24,338 INFO L93 Difference]: Finished difference Result 914 states and 1318 transitions. [2021-10-13 00:36:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:36:24,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 50 [2021-10-13 00:36:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:24,345 INFO L225 Difference]: With dead ends: 914 [2021-10-13 00:36:24,345 INFO L226 Difference]: Without dead ends: 914 [2021-10-13 00:36:24,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 161.5ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:36:24,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2021-10-13 00:36:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 792. [2021-10-13 00:36:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 621 states have (on average 1.3896940418679549) internal successors, (863), 633 states have internal predecessors, (863), 110 states have call successors, (110), 49 states have call predecessors, (110), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2021-10-13 00:36:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1104 transitions. [2021-10-13 00:36:24,384 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1104 transitions. Word has length 50 [2021-10-13 00:36:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:24,385 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1104 transitions. [2021-10-13 00:36:24,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 6 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-10-13 00:36:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1104 transitions. [2021-10-13 00:36:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-13 00:36:24,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:24,389 INFO L512 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] [2021-10-13 00:36:24,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:24,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:24,603 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:24,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1865011280, now seen corresponding path program 1 times [2021-10-13 00:36:24,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:24,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554468588] [2021-10-13 00:36:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:24,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:24,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:24,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:24,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 00:36:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:25,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:36:25,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:25,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:25,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:25,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554468588] [2021-10-13 00:36:25,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554468588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:25,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:25,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:36:25,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801522067] [2021-10-13 00:36:25,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:36:25,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:36:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:25,387 INFO L87 Difference]: Start difference. First operand 792 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:36:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:25,499 INFO L93 Difference]: Finished difference Result 954 states and 1318 transitions. [2021-10-13 00:36:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:36:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-10-13 00:36:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:25,514 INFO L225 Difference]: With dead ends: 954 [2021-10-13 00:36:25,514 INFO L226 Difference]: Without dead ends: 954 [2021-10-13 00:36:25,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-10-13 00:36:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 848. [2021-10-13 00:36:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 663 states have (on average 1.3710407239819005) internal successors, (909), 677 states have internal predecessors, (909), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2021-10-13 00:36:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1164 transitions. [2021-10-13 00:36:25,566 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1164 transitions. Word has length 50 [2021-10-13 00:36:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:25,568 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 1164 transitions. [2021-10-13 00:36:25,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-13 00:36:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1164 transitions. [2021-10-13 00:36:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 00:36:25,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:25,572 INFO L512 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] [2021-10-13 00:36:25,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:25,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:25,795 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash -540904097, now seen corresponding path program 1 times [2021-10-13 00:36:25,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:25,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480143501] [2021-10-13 00:36:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:25,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:25,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:25,801 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:25,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 00:36:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:26,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:36:26,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:26,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:26,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:26,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480143501] [2021-10-13 00:36:26,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480143501] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:26,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:26,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 00:36:26,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934965655] [2021-10-13 00:36:26,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:36:26,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:36:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:36:26,822 INFO L87 Difference]: Start difference. First operand 848 states and 1164 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:36:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:27,028 INFO L93 Difference]: Finished difference Result 882 states and 1209 transitions. [2021-10-13 00:36:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:36:27,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2021-10-13 00:36:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:27,034 INFO L225 Difference]: With dead ends: 882 [2021-10-13 00:36:27,035 INFO L226 Difference]: Without dead ends: 882 [2021-10-13 00:36:27,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:36:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-10-13 00:36:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 854. [2021-10-13 00:36:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 669 states have (on average 1.3721973094170403) internal successors, (918), 683 states have internal predecessors, (918), 112 states have call successors, (112), 51 states have call predecessors, (112), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2021-10-13 00:36:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1173 transitions. [2021-10-13 00:36:27,067 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1173 transitions. Word has length 52 [2021-10-13 00:36:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:27,068 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1173 transitions. [2021-10-13 00:36:27,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-13 00:36:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1173 transitions. [2021-10-13 00:36:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 00:36:27,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:27,073 INFO L512 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] [2021-10-13 00:36:27,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:27,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:27,292 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash -400355487, now seen corresponding path program 1 times [2021-10-13 00:36:27,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:27,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783212407] [2021-10-13 00:36:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:27,293 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:27,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:27,295 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:27,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 00:36:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:27,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:36:27,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:27,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:28,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:28,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783212407] [2021-10-13 00:36:28,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783212407] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:28,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:28,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:36:28,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128334068] [2021-10-13 00:36:28,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:36:28,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:36:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:28,226 INFO L87 Difference]: Start difference. First operand 854 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:36:28,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:28,323 INFO L93 Difference]: Finished difference Result 877 states and 1199 transitions. [2021-10-13 00:36:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:36:28,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2021-10-13 00:36:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:28,330 INFO L225 Difference]: With dead ends: 877 [2021-10-13 00:36:28,331 INFO L226 Difference]: Without dead ends: 877 [2021-10-13 00:36:28,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-10-13 00:36:28,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 873. [2021-10-13 00:36:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 685 states have (on average 1.3693430656934307) internal successors, (938), 700 states have internal predecessors, (938), 113 states have call successors, (113), 52 states have call predecessors, (113), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2021-10-13 00:36:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1196 transitions. [2021-10-13 00:36:28,371 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1196 transitions. Word has length 52 [2021-10-13 00:36:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:28,372 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1196 transitions. [2021-10-13 00:36:28,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:36:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1196 transitions. [2021-10-13 00:36:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 00:36:28,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:28,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:36:28,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:28,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:28,591 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:28,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1037319808, now seen corresponding path program 1 times [2021-10-13 00:36:28,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:28,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489770455] [2021-10-13 00:36:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:28,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:28,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:28,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:28,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 00:36:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:29,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:36:29,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:29,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:29,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:29,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489770455] [2021-10-13 00:36:29,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489770455] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:29,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:29,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-13 00:36:29,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950559618] [2021-10-13 00:36:29,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:36:29,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:36:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:36:29,690 INFO L87 Difference]: Start difference. First operand 873 states and 1196 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:36:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:30,926 INFO L93 Difference]: Finished difference Result 1555 states and 2148 transitions. [2021-10-13 00:36:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:36:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2021-10-13 00:36:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:30,938 INFO L225 Difference]: With dead ends: 1555 [2021-10-13 00:36:30,938 INFO L226 Difference]: Without dead ends: 1555 [2021-10-13 00:36:30,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 247.6ms TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:36:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-10-13 00:36:30,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1345. [2021-10-13 00:36:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1056 states have (on average 1.3806818181818181) internal successors, (1458), 1090 states have internal predecessors, (1458), 176 states have call successors, (176), 84 states have call predecessors, (176), 112 states have return successors, (236), 176 states have call predecessors, (236), 168 states have call successors, (236) [2021-10-13 00:36:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1870 transitions. [2021-10-13 00:36:31,002 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1870 transitions. Word has length 54 [2021-10-13 00:36:31,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:31,003 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 1870 transitions. [2021-10-13 00:36:31,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:36:31,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1870 transitions. [2021-10-13 00:36:31,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:36:31,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:31,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:36:31,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:31,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:31,229 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:31,229 INFO L82 PathProgramCache]: Analyzing trace with hash -219767481, now seen corresponding path program 1 times [2021-10-13 00:36:31,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:31,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659803936] [2021-10-13 00:36:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:31,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:31,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:31,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:31,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 00:36:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:31,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:36:31,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:31,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:32,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:32,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659803936] [2021-10-13 00:36:32,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659803936] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:32,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:32,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:36:32,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190938557] [2021-10-13 00:36:32,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:36:32,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:36:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:32,098 INFO L87 Difference]: Start difference. First operand 1345 states and 1870 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:36:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:32,185 INFO L93 Difference]: Finished difference Result 1342 states and 1863 transitions. [2021-10-13 00:36:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:36:32,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2021-10-13 00:36:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:32,194 INFO L225 Difference]: With dead ends: 1342 [2021-10-13 00:36:32,195 INFO L226 Difference]: Without dead ends: 1342 [2021-10-13 00:36:32,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:36:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-10-13 00:36:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1342. [2021-10-13 00:36:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1054 states have (on average 1.3776091081593929) internal successors, (1452), 1087 states have internal predecessors, (1452), 175 states have call successors, (175), 84 states have call predecessors, (175), 112 states have return successors, (236), 176 states have call predecessors, (236), 168 states have call successors, (236) [2021-10-13 00:36:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1863 transitions. [2021-10-13 00:36:32,271 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1863 transitions. Word has length 56 [2021-10-13 00:36:32,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:32,272 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1863 transitions. [2021-10-13 00:36:32,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:36:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1863 transitions. [2021-10-13 00:36:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:36:32,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:32,278 INFO L512 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] [2021-10-13 00:36:32,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:32,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:32,497 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:32,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:32,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1536910814, now seen corresponding path program 1 times [2021-10-13 00:36:32,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:32,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141328579] [2021-10-13 00:36:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:32,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:32,499 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:32,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 00:36:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:33,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:36:33,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:33,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:33,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:33,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141328579] [2021-10-13 00:36:33,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141328579] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:33,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:33,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 15 [2021-10-13 00:36:33,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561791863] [2021-10-13 00:36:33,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:36:33,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:36:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:36:33,711 INFO L87 Difference]: Start difference. First operand 1342 states and 1863 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:36:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:33,930 INFO L93 Difference]: Finished difference Result 1375 states and 1899 transitions. [2021-10-13 00:36:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:36:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2021-10-13 00:36:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:33,941 INFO L225 Difference]: With dead ends: 1375 [2021-10-13 00:36:33,942 INFO L226 Difference]: Without dead ends: 1352 [2021-10-13 00:36:33,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 174.6ms TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:36:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-13 00:36:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1348. [2021-10-13 00:36:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1059 states have (on average 1.3758262511803587) internal successors, (1457), 1093 states have internal predecessors, (1457), 176 states have call successors, (176), 84 states have call predecessors, (176), 112 states have return successors, (237), 177 states have call predecessors, (237), 169 states have call successors, (237) [2021-10-13 00:36:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1870 transitions. [2021-10-13 00:36:34,002 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1870 transitions. Word has length 51 [2021-10-13 00:36:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:34,003 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 1870 transitions. [2021-10-13 00:36:34,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:36:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1870 transitions. [2021-10-13 00:36:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:36:34,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:34,009 INFO L512 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] [2021-10-13 00:36:34,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:34,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:34,228 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:34,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1165615473, now seen corresponding path program 1 times [2021-10-13 00:36:34,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:34,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080557438] [2021-10-13 00:36:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:34,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:34,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:34,231 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:34,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 00:36:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:34,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:36:34,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:35,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:35,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:35,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080557438] [2021-10-13 00:36:35,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080557438] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:35,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:35,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 00:36:35,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55237074] [2021-10-13 00:36:35,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:36:35,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:36:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:36:35,528 INFO L87 Difference]: Start difference. First operand 1348 states and 1870 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:36:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:36,166 INFO L93 Difference]: Finished difference Result 1361 states and 1881 transitions. [2021-10-13 00:36:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:36:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 53 [2021-10-13 00:36:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:36,174 INFO L225 Difference]: With dead ends: 1361 [2021-10-13 00:36:36,175 INFO L226 Difference]: Without dead ends: 1329 [2021-10-13 00:36:36,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:36:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-10-13 00:36:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1321. [2021-10-13 00:36:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1037 states have (on average 1.3799421407907426) internal successors, (1431), 1070 states have internal predecessors, (1431), 173 states have call successors, (173), 82 states have call predecessors, (173), 110 states have return successors, (234), 174 states have call predecessors, (234), 166 states have call successors, (234) [2021-10-13 00:36:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1838 transitions. [2021-10-13 00:36:36,224 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1838 transitions. Word has length 53 [2021-10-13 00:36:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:36,224 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 1838 transitions. [2021-10-13 00:36:36,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:36:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1838 transitions. [2021-10-13 00:36:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 00:36:36,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:36,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:36:36,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:36,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:36,451 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:36,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1142318984, now seen corresponding path program 1 times [2021-10-13 00:36:36,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:36,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896130490] [2021-10-13 00:36:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:36,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:36,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:36,453 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:36,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 00:36:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:37,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:36:37,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:37,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:37,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:37,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896130490] [2021-10-13 00:36:37,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896130490] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:37,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:37,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 00:36:37,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870593100] [2021-10-13 00:36:37,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:36:37,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:36:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:36:37,833 INFO L87 Difference]: Start difference. First operand 1321 states and 1838 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:36:38,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:38,589 INFO L93 Difference]: Finished difference Result 1515 states and 2117 transitions. [2021-10-13 00:36:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:36:38,590 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), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 54 [2021-10-13 00:36:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:38,598 INFO L225 Difference]: With dead ends: 1515 [2021-10-13 00:36:38,599 INFO L226 Difference]: Without dead ends: 1513 [2021-10-13 00:36:38,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:36:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-10-13 00:36:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1314. [2021-10-13 00:36:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1031 states have (on average 1.3743937924345295) internal successors, (1417), 1063 states have internal predecessors, (1417), 172 states have call successors, (172), 82 states have call predecessors, (172), 110 states have return successors, (234), 174 states have call predecessors, (234), 166 states have call successors, (234) [2021-10-13 00:36:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1823 transitions. [2021-10-13 00:36:38,651 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1823 transitions. Word has length 54 [2021-10-13 00:36:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:38,652 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1823 transitions. [2021-10-13 00:36:38,652 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), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:36:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1823 transitions. [2021-10-13 00:36:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 00:36:38,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:38,659 INFO L512 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] [2021-10-13 00:36:38,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:38,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:38,875 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:38,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1364295162, now seen corresponding path program 1 times [2021-10-13 00:36:38,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:38,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154625649] [2021-10-13 00:36:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:38,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:38,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:38,877 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:38,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 00:36:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:39,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:36:39,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:39,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:40,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:40,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154625649] [2021-10-13 00:36:40,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154625649] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:40,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:40,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 00:36:40,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128572136] [2021-10-13 00:36:40,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:36:40,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:36:40,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:36:40,141 INFO L87 Difference]: Start difference. First operand 1314 states and 1823 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 12 states have internal predecessors, (62), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) [2021-10-13 00:36:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:40,649 INFO L93 Difference]: Finished difference Result 1377 states and 1903 transitions. [2021-10-13 00:36:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:36:40,649 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 12 states have internal predecessors, (62), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2021-10-13 00:36:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:40,657 INFO L225 Difference]: With dead ends: 1377 [2021-10-13 00:36:40,658 INFO L226 Difference]: Without dead ends: 1257 [2021-10-13 00:36:40,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 181.3ms TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:36:40,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2021-10-13 00:36:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1252. [2021-10-13 00:36:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 983 states have (on average 1.3326551373346898) internal successors, (1310), 1014 states have internal predecessors, (1310), 158 states have call successors, (158), 82 states have call predecessors, (158), 110 states have return successors, (220), 161 states have call predecessors, (220), 152 states have call successors, (220) [2021-10-13 00:36:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1688 transitions. [2021-10-13 00:36:40,727 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1688 transitions. Word has length 55 [2021-10-13 00:36:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:40,727 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1688 transitions. [2021-10-13 00:36:40,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 12 states have internal predecessors, (62), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) [2021-10-13 00:36:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1688 transitions. [2021-10-13 00:36:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-13 00:36:40,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:40,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:36:40,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:40,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:40,954 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:40,955 INFO L82 PathProgramCache]: Analyzing trace with hash 149703456, now seen corresponding path program 1 times [2021-10-13 00:36:40,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:40,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918236525] [2021-10-13 00:36:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:40,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:40,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:40,957 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:40,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 00:36:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:41,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:36:41,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:42,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:42,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:42,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918236525] [2021-10-13 00:36:42,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918236525] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:42,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:42,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2021-10-13 00:36:42,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857694754] [2021-10-13 00:36:42,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:36:42,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:36:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:36:42,620 INFO L87 Difference]: Start difference. First operand 1252 states and 1688 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:36:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:43,103 INFO L93 Difference]: Finished difference Result 1332 states and 1786 transitions. [2021-10-13 00:36:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:36:43,104 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) Word has length 56 [2021-10-13 00:36:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:43,112 INFO L225 Difference]: With dead ends: 1332 [2021-10-13 00:36:43,113 INFO L226 Difference]: Without dead ends: 1296 [2021-10-13 00:36:43,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 289.6ms TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:36:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-10-13 00:36:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1254. [2021-10-13 00:36:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 987 states have (on average 1.331306990881459) internal successors, (1314), 1018 states have internal predecessors, (1314), 156 states have call successors, (156), 82 states have call predecessors, (156), 110 states have return successors, (218), 159 states have call predecessors, (218), 150 states have call successors, (218) [2021-10-13 00:36:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1688 transitions. [2021-10-13 00:36:43,157 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1688 transitions. Word has length 56 [2021-10-13 00:36:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:43,158 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1688 transitions. [2021-10-13 00:36:43,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:36:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1688 transitions. [2021-10-13 00:36:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 00:36:43,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:43,164 INFO L512 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] [2021-10-13 00:36:43,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:43,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:43,379 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1617706055, now seen corresponding path program 1 times [2021-10-13 00:36:43,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:43,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311459993] [2021-10-13 00:36:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:43,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:43,381 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:43,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 00:36:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:44,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:36:44,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:44,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:44,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:44,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311459993] [2021-10-13 00:36:44,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311459993] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:44,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:44,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2021-10-13 00:36:44,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076644014] [2021-10-13 00:36:44,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:36:44,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:44,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:36:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:36:44,928 INFO L87 Difference]: Start difference. First operand 1254 states and 1688 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:36:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:45,370 INFO L93 Difference]: Finished difference Result 1323 states and 1771 transitions. [2021-10-13 00:36:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:36:45,371 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) Word has length 55 [2021-10-13 00:36:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:45,379 INFO L225 Difference]: With dead ends: 1323 [2021-10-13 00:36:45,380 INFO L226 Difference]: Without dead ends: 1287 [2021-10-13 00:36:45,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 244.8ms TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:36:45,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-10-13 00:36:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1245. [2021-10-13 00:36:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 982 states have (on average 1.3309572301425663) internal successors, (1307), 1012 states have internal predecessors, (1307), 154 states have call successors, (154), 82 states have call predecessors, (154), 108 states have return successors, (214), 156 states have call predecessors, (214), 148 states have call successors, (214) [2021-10-13 00:36:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1675 transitions. [2021-10-13 00:36:45,438 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1675 transitions. Word has length 55 [2021-10-13 00:36:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:45,439 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1675 transitions. [2021-10-13 00:36:45,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:36:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1675 transitions. [2021-10-13 00:36:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-13 00:36:45,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:45,445 INFO L512 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] [2021-10-13 00:36:45,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:45,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:45,659 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:45,660 INFO L82 PathProgramCache]: Analyzing trace with hash 209841830, now seen corresponding path program 1 times [2021-10-13 00:36:45,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:45,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229527476] [2021-10-13 00:36:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:45,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:45,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:45,662 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:45,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 00:36:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:46,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:36:46,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:46,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:46,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:46,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229527476] [2021-10-13 00:36:46,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229527476] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:46,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:46,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 00:36:46,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938009571] [2021-10-13 00:36:46,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:36:46,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:36:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:36:46,875 INFO L87 Difference]: Start difference. First operand 1245 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:36:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:46,926 INFO L93 Difference]: Finished difference Result 1231 states and 1653 transitions. [2021-10-13 00:36:46,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:36:46,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2021-10-13 00:36:46,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:46,935 INFO L225 Difference]: With dead ends: 1231 [2021-10-13 00:36:46,935 INFO L226 Difference]: Without dead ends: 1231 [2021-10-13 00:36:46,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:36:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-10-13 00:36:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2021-10-13 00:36:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 968 states have (on average 1.3274793388429753) internal successors, (1285), 998 states have internal predecessors, (1285), 154 states have call successors, (154), 82 states have call predecessors, (154), 108 states have return successors, (214), 156 states have call predecessors, (214), 148 states have call successors, (214) [2021-10-13 00:36:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1653 transitions. [2021-10-13 00:36:46,977 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1653 transitions. Word has length 61 [2021-10-13 00:36:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:46,977 INFO L470 AbstractCegarLoop]: Abstraction has 1231 states and 1653 transitions. [2021-10-13 00:36:46,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 00:36:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1653 transitions. [2021-10-13 00:36:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 00:36:46,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:46,983 INFO L512 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] [2021-10-13 00:36:47,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:47,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:47,203 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:47,204 INFO L82 PathProgramCache]: Analyzing trace with hash 288909415, now seen corresponding path program 1 times [2021-10-13 00:36:47,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:47,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773612274] [2021-10-13 00:36:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:47,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:47,205 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:47,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 00:36:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:48,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:36:48,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:48,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:48,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:48,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773612274] [2021-10-13 00:36:48,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773612274] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:48,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:48,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-13 00:36:48,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138261091] [2021-10-13 00:36:48,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:36:48,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:36:48,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:36:48,570 INFO L87 Difference]: Start difference. First operand 1231 states and 1653 transitions. Second operand has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:36:48,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:48,792 INFO L93 Difference]: Finished difference Result 1251 states and 1684 transitions. [2021-10-13 00:36:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:36:48,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 59 [2021-10-13 00:36:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:48,803 INFO L225 Difference]: With dead ends: 1251 [2021-10-13 00:36:48,803 INFO L226 Difference]: Without dead ends: 1251 [2021-10-13 00:36:48,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:36:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-10-13 00:36:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1243. [2021-10-13 00:36:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 976 states have (on average 1.3278688524590163) internal successors, (1296), 1009 states have internal predecessors, (1296), 157 states have call successors, (157), 82 states have call predecessors, (157), 109 states have return successors, (220), 157 states have call predecessors, (220), 151 states have call successors, (220) [2021-10-13 00:36:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1673 transitions. [2021-10-13 00:36:48,845 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1673 transitions. Word has length 59 [2021-10-13 00:36:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:48,846 INFO L470 AbstractCegarLoop]: Abstraction has 1243 states and 1673 transitions. [2021-10-13 00:36:48,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-13 00:36:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1673 transitions. [2021-10-13 00:36:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-13 00:36:48,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:48,852 INFO L512 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] [2021-10-13 00:36:48,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:49,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:49,072 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash 990509289, now seen corresponding path program 1 times [2021-10-13 00:36:49,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:49,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53990782] [2021-10-13 00:36:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:49,073 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:49,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:49,074 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:49,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 00:36:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:49,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:36:49,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:50,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:50,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:50,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53990782] [2021-10-13 00:36:50,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53990782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:50,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:50,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 00:36:50,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854439131] [2021-10-13 00:36:50,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:36:50,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:50,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:36:50,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:36:50,859 INFO L87 Difference]: Start difference. First operand 1243 states and 1673 transitions. Second operand has 22 states, 20 states have (on average 3.3) internal successors, (66), 16 states have internal predecessors, (66), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-13 00:36:51,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:51,519 INFO L93 Difference]: Finished difference Result 1292 states and 1735 transitions. [2021-10-13 00:36:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:36:51,520 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 16 states have internal predecessors, (66), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) Word has length 59 [2021-10-13 00:36:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:51,533 INFO L225 Difference]: With dead ends: 1292 [2021-10-13 00:36:51,541 INFO L226 Difference]: Without dead ends: 1241 [2021-10-13 00:36:51,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 422.3ms TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:36:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-10-13 00:36:51,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1238. [2021-10-13 00:36:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 971 states have (on average 1.2996910401647785) internal successors, (1262), 1004 states have internal predecessors, (1262), 157 states have call successors, (157), 82 states have call predecessors, (157), 109 states have return successors, (220), 157 states have call predecessors, (220), 151 states have call successors, (220) [2021-10-13 00:36:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1639 transitions. [2021-10-13 00:36:51,581 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1639 transitions. Word has length 59 [2021-10-13 00:36:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:51,581 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1639 transitions. [2021-10-13 00:36:51,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 16 states have internal predecessors, (66), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-13 00:36:51,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1639 transitions. [2021-10-13 00:36:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:36:51,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:51,587 INFO L512 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] [2021-10-13 00:36:51,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:51,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:51,808 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:51,809 INFO L82 PathProgramCache]: Analyzing trace with hash 846257089, now seen corresponding path program 1 times [2021-10-13 00:36:51,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:51,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019147685] [2021-10-13 00:36:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:51,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:51,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:51,811 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:51,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 00:36:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:52,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:36:52,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:53,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:53,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:53,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019147685] [2021-10-13 00:36:53,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019147685] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:53,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:53,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-10-13 00:36:53,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144900623] [2021-10-13 00:36:53,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:36:53,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:36:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:36:53,610 INFO L87 Difference]: Start difference. First operand 1238 states and 1639 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 15 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:36:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:54,284 INFO L93 Difference]: Finished difference Result 1314 states and 1727 transitions. [2021-10-13 00:36:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:36:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 15 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) Word has length 58 [2021-10-13 00:36:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:54,291 INFO L225 Difference]: With dead ends: 1314 [2021-10-13 00:36:54,291 INFO L226 Difference]: Without dead ends: 1272 [2021-10-13 00:36:54,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 341.6ms TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:36:54,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-10-13 00:36:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1232. [2021-10-13 00:36:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 967 states have (on average 1.2988624612202688) internal successors, (1256), 1000 states have internal predecessors, (1256), 155 states have call successors, (155), 82 states have call predecessors, (155), 109 states have return successors, (218), 155 states have call predecessors, (218), 149 states have call successors, (218) [2021-10-13 00:36:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1629 transitions. [2021-10-13 00:36:54,331 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1629 transitions. Word has length 58 [2021-10-13 00:36:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:54,332 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1629 transitions. [2021-10-13 00:36:54,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 15 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:36:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1629 transitions. [2021-10-13 00:36:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 00:36:54,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:54,337 INFO L512 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] [2021-10-13 00:36:54,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:54,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:54,557 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:54,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1215355375, now seen corresponding path program 1 times [2021-10-13 00:36:54,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:54,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018141955] [2021-10-13 00:36:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:54,558 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:54,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:54,559 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:54,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 00:36:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:55,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:36:55,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:55,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:55,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:55,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018141955] [2021-10-13 00:36:55,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018141955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:55,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:55,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-13 00:36:55,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014427634] [2021-10-13 00:36:55,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:36:55,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:36:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:36:55,827 INFO L87 Difference]: Start difference. First operand 1232 states and 1629 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:36:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:56,000 INFO L93 Difference]: Finished difference Result 1308 states and 1757 transitions. [2021-10-13 00:36:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:36:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2021-10-13 00:36:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:56,006 INFO L225 Difference]: With dead ends: 1308 [2021-10-13 00:36:56,007 INFO L226 Difference]: Without dead ends: 1308 [2021-10-13 00:36:56,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:36:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-10-13 00:36:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1246. [2021-10-13 00:36:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 977 states have (on average 1.2998976458546572) internal successors, (1270), 1012 states have internal predecessors, (1270), 157 states have call successors, (157), 82 states have call predecessors, (157), 111 states have return successors, (232), 157 states have call predecessors, (232), 151 states have call successors, (232) [2021-10-13 00:36:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1659 transitions. [2021-10-13 00:36:56,073 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1659 transitions. Word has length 60 [2021-10-13 00:36:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:56,074 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 1659 transitions. [2021-10-13 00:36:56,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:36:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1659 transitions. [2021-10-13 00:36:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 00:36:56,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:56,083 INFO L512 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] [2021-10-13 00:36:56,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:56,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:56,295 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:56,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1490114989, now seen corresponding path program 1 times [2021-10-13 00:36:56,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:56,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542989732] [2021-10-13 00:36:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:56,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:56,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:56,297 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:56,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 00:36:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:57,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:36:57,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:57,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:36:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:57,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:36:57,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542989732] [2021-10-13 00:36:57,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542989732] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:36:57,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:36:57,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-13 00:36:57,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718404263] [2021-10-13 00:36:57,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:36:57,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:36:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:36:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:36:57,862 INFO L87 Difference]: Start difference. First operand 1246 states and 1659 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:36:58,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:36:58,140 INFO L93 Difference]: Finished difference Result 1312 states and 1768 transitions. [2021-10-13 00:36:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:36:58,141 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 3 states have call successors, (11) Word has length 60 [2021-10-13 00:36:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:36:58,145 INFO L225 Difference]: With dead ends: 1312 [2021-10-13 00:36:58,146 INFO L226 Difference]: Without dead ends: 1268 [2021-10-13 00:36:58,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 251.1ms TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:36:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-10-13 00:36:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1252. [2021-10-13 00:36:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 980 states have (on average 1.2979591836734694) internal successors, (1272), 1019 states have internal predecessors, (1272), 156 states have call successors, (156), 82 states have call predecessors, (156), 115 states have return successors, (261), 156 states have call predecessors, (261), 150 states have call successors, (261) [2021-10-13 00:36:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1689 transitions. [2021-10-13 00:36:58,186 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1689 transitions. Word has length 60 [2021-10-13 00:36:58,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:36:58,187 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1689 transitions. [2021-10-13 00:36:58,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 14 states have internal predecessors, (65), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:36:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1689 transitions. [2021-10-13 00:36:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 00:36:58,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:36:58,218 INFO L512 BasicCegarLoop]: trace histogram [2, 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] [2021-10-13 00:36:58,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:36:58,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:36:58,418 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:36:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:36:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash -211177249, now seen corresponding path program 1 times [2021-10-13 00:36:58,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:36:58,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903710396] [2021-10-13 00:36:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:36:58,420 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:36:58,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:36:58,422 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:36:58,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 00:36:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:36:59,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:36:59,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:36:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:36:59,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:00,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:00,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903710396] [2021-10-13 00:37:00,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903710396] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:00,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:00,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-10-13 00:37:00,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676506467] [2021-10-13 00:37:00,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:37:00,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:37:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:37:00,232 INFO L87 Difference]: Start difference. First operand 1252 states and 1689 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2021-10-13 00:37:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:01,045 INFO L93 Difference]: Finished difference Result 1266 states and 1701 transitions. [2021-10-13 00:37:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:37:01,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 78 [2021-10-13 00:37:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:01,051 INFO L225 Difference]: With dead ends: 1266 [2021-10-13 00:37:01,052 INFO L226 Difference]: Without dead ends: 1266 [2021-10-13 00:37:01,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-10-13 00:37:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1252. [2021-10-13 00:37:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 980 states have (on average 1.2938775510204081) internal successors, (1268), 1019 states have internal predecessors, (1268), 156 states have call successors, (156), 82 states have call predecessors, (156), 115 states have return successors, (261), 156 states have call predecessors, (261), 150 states have call successors, (261) [2021-10-13 00:37:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1685 transitions. [2021-10-13 00:37:01,104 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1685 transitions. Word has length 78 [2021-10-13 00:37:01,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:01,105 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1685 transitions. [2021-10-13 00:37:01,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2021-10-13 00:37:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1685 transitions. [2021-10-13 00:37:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 00:37:01,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:01,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:01,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:01,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:01,329 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:01,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1151296709, now seen corresponding path program 1 times [2021-10-13 00:37:01,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:01,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675449898] [2021-10-13 00:37:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:01,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:01,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:01,332 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:01,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 00:37:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:02,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:37:02,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:02,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:03,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:03,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675449898] [2021-10-13 00:37:03,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675449898] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:03,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:03,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 00:37:03,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744917519] [2021-10-13 00:37:03,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:37:03,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:37:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:37:03,167 INFO L87 Difference]: Start difference. First operand 1252 states and 1685 transitions. Second operand has 22 states, 20 states have (on average 3.55) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2021-10-13 00:37:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:03,582 INFO L93 Difference]: Finished difference Result 1276 states and 1714 transitions. [2021-10-13 00:37:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:37:03,583 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.55) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) Word has length 66 [2021-10-13 00:37:03,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:03,586 INFO L225 Difference]: With dead ends: 1276 [2021-10-13 00:37:03,586 INFO L226 Difference]: Without dead ends: 1255 [2021-10-13 00:37:03,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 300.7ms TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:37:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-10-13 00:37:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1250. [2021-10-13 00:37:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 979 states have (on average 1.2921348314606742) internal successors, (1265), 1018 states have internal predecessors, (1265), 155 states have call successors, (155), 82 states have call predecessors, (155), 115 states have return successors, (260), 155 states have call predecessors, (260), 149 states have call successors, (260) [2021-10-13 00:37:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1680 transitions. [2021-10-13 00:37:03,633 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1680 transitions. Word has length 66 [2021-10-13 00:37:03,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:03,634 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1680 transitions. [2021-10-13 00:37:03,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.55) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2021-10-13 00:37:03,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1680 transitions. [2021-10-13 00:37:03,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 00:37:03,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:03,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:03,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:03,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:03,859 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash 854796416, now seen corresponding path program 1 times [2021-10-13 00:37:03,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:03,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684761542] [2021-10-13 00:37:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:03,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:03,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:03,860 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:03,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 00:37:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:04,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:37:04,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:05,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:05,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:05,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684761542] [2021-10-13 00:37:05,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684761542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:05,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:05,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 00:37:05,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561330740] [2021-10-13 00:37:05,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:37:05,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:37:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:37:05,518 INFO L87 Difference]: Start difference. First operand 1250 states and 1680 transitions. Second operand has 22 states, 20 states have (on average 3.45) internal successors, (69), 16 states have internal predecessors, (69), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-13 00:37:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:05,870 INFO L93 Difference]: Finished difference Result 1274 states and 1709 transitions. [2021-10-13 00:37:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:37:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.45) internal successors, (69), 16 states have internal predecessors, (69), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) Word has length 62 [2021-10-13 00:37:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:05,875 INFO L225 Difference]: With dead ends: 1274 [2021-10-13 00:37:05,875 INFO L226 Difference]: Without dead ends: 1253 [2021-10-13 00:37:05,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 273.2ms TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:37:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2021-10-13 00:37:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1248. [2021-10-13 00:37:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 978 states have (on average 1.2903885480572597) internal successors, (1262), 1017 states have internal predecessors, (1262), 154 states have call successors, (154), 82 states have call predecessors, (154), 115 states have return successors, (259), 154 states have call predecessors, (259), 148 states have call successors, (259) [2021-10-13 00:37:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1675 transitions. [2021-10-13 00:37:05,929 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1675 transitions. Word has length 62 [2021-10-13 00:37:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:05,930 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1675 transitions. [2021-10-13 00:37:05,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.45) internal successors, (69), 16 states have internal predecessors, (69), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-13 00:37:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1675 transitions. [2021-10-13 00:37:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:37:05,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:05,934 INFO L512 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] [2021-10-13 00:37:05,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:06,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:06,151 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:06,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:06,152 INFO L82 PathProgramCache]: Analyzing trace with hash -317898980, now seen corresponding path program 1 times [2021-10-13 00:37:06,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:06,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246327900] [2021-10-13 00:37:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:06,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:06,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:06,153 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:06,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 00:37:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:07,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:37:07,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:07,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:07,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:07,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246327900] [2021-10-13 00:37:07,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246327900] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:07,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:07,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-10-13 00:37:07,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767898188] [2021-10-13 00:37:07,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:37:07,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:37:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:37:07,940 INFO L87 Difference]: Start difference. First operand 1248 states and 1675 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 17 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:37:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:08,536 INFO L93 Difference]: Finished difference Result 1324 states and 1761 transitions. [2021-10-13 00:37:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:37:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 17 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) Word has length 63 [2021-10-13 00:37:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:08,540 INFO L225 Difference]: With dead ends: 1324 [2021-10-13 00:37:08,540 INFO L226 Difference]: Without dead ends: 1272 [2021-10-13 00:37:08,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 344.5ms TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:37:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-10-13 00:37:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1238. [2021-10-13 00:37:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 972 states have (on average 1.2901234567901234) internal successors, (1254), 1011 states have internal predecessors, (1254), 152 states have call successors, (152), 82 states have call predecessors, (152), 113 states have return successors, (255), 150 states have call predecessors, (255), 146 states have call successors, (255) [2021-10-13 00:37:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1661 transitions. [2021-10-13 00:37:08,571 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1661 transitions. Word has length 63 [2021-10-13 00:37:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:08,571 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1661 transitions. [2021-10-13 00:37:08,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 17 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:37:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1661 transitions. [2021-10-13 00:37:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 00:37:08,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:08,575 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:08,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:08,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:08,793 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:08,794 INFO L82 PathProgramCache]: Analyzing trace with hash -136722259, now seen corresponding path program 1 times [2021-10-13 00:37:08,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:08,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846341533] [2021-10-13 00:37:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:08,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:08,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:08,795 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:08,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 00:37:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:09,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:37:09,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:10,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:10,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:10,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846341533] [2021-10-13 00:37:10,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846341533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:10,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:10,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-10-13 00:37:10,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487714549] [2021-10-13 00:37:10,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:37:10,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:37:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:37:10,633 INFO L87 Difference]: Start difference. First operand 1238 states and 1661 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 17 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:37:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:11,182 INFO L93 Difference]: Finished difference Result 1314 states and 1745 transitions. [2021-10-13 00:37:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:37:11,183 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 17 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) Word has length 62 [2021-10-13 00:37:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:11,187 INFO L225 Difference]: With dead ends: 1314 [2021-10-13 00:37:11,188 INFO L226 Difference]: Without dead ends: 1262 [2021-10-13 00:37:11,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 372.8ms TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:37:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-10-13 00:37:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1228. [2021-10-13 00:37:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 966 states have (on average 1.289855072463768) internal successors, (1246), 1005 states have internal predecessors, (1246), 150 states have call successors, (150), 82 states have call predecessors, (150), 111 states have return successors, (251), 146 states have call predecessors, (251), 144 states have call successors, (251) [2021-10-13 00:37:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1647 transitions. [2021-10-13 00:37:11,220 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1647 transitions. Word has length 62 [2021-10-13 00:37:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:11,221 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 1647 transitions. [2021-10-13 00:37:11,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 17 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:37:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1647 transitions. [2021-10-13 00:37:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:37:11,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:11,225 INFO L512 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] [2021-10-13 00:37:11,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:11,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:11,444 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash 94481597, now seen corresponding path program 1 times [2021-10-13 00:37:11,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:11,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463217376] [2021-10-13 00:37:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:11,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:11,446 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 00:37:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:12,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:37:12,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:12,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:13,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:13,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:13,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463217376] [2021-10-13 00:37:13,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463217376] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:13,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:13,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 00:37:13,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085710226] [2021-10-13 00:37:13,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:37:13,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:13,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:37:13,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:37:13,107 INFO L87 Difference]: Start difference. First operand 1228 states and 1647 transitions. Second operand has 22 states, 20 states have (on average 3.5) internal successors, (70), 16 states have internal predecessors, (70), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-13 00:37:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:13,444 INFO L93 Difference]: Finished difference Result 1250 states and 1673 transitions. [2021-10-13 00:37:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:37:13,445 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.5) internal successors, (70), 16 states have internal predecessors, (70), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) Word has length 63 [2021-10-13 00:37:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:13,449 INFO L225 Difference]: With dead ends: 1250 [2021-10-13 00:37:13,449 INFO L226 Difference]: Without dead ends: 1229 [2021-10-13 00:37:13,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 258.5ms TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:37:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-10-13 00:37:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1226. [2021-10-13 00:37:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 965 states have (on average 1.2880829015544042) internal successors, (1243), 1004 states have internal predecessors, (1243), 149 states have call successors, (149), 82 states have call predecessors, (149), 111 states have return successors, (250), 145 states have call predecessors, (250), 143 states have call successors, (250) [2021-10-13 00:37:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1642 transitions. [2021-10-13 00:37:13,483 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1642 transitions. Word has length 63 [2021-10-13 00:37:13,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:13,483 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1642 transitions. [2021-10-13 00:37:13,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.5) internal successors, (70), 16 states have internal predecessors, (70), 6 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2021-10-13 00:37:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1642 transitions. [2021-10-13 00:37:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:37:13,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:13,487 INFO L512 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] [2021-10-13 00:37:13,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:13,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:13,700 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:13,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:13,701 INFO L82 PathProgramCache]: Analyzing trace with hash 727665943, now seen corresponding path program 1 times [2021-10-13 00:37:13,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:13,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330677035] [2021-10-13 00:37:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:13,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:13,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:13,702 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:13,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 00:37:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:14,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:37:14,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:14,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:15,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:15,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330677035] [2021-10-13 00:37:15,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330677035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:15,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:15,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:37:15,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279092266] [2021-10-13 00:37:15,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:37:15,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:37:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:37:15,031 INFO L87 Difference]: Start difference. First operand 1226 states and 1642 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:37:15,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:15,041 INFO L93 Difference]: Finished difference Result 1132 states and 1464 transitions. [2021-10-13 00:37:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:37:15,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2021-10-13 00:37:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:15,044 INFO L225 Difference]: With dead ends: 1132 [2021-10-13 00:37:15,044 INFO L226 Difference]: Without dead ends: 1124 [2021-10-13 00:37:15,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:37:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-10-13 00:37:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 999. [2021-10-13 00:37:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 790 states have (on average 1.2746835443037974) internal successors, (1007), 815 states have internal predecessors, (1007), 114 states have call successors, (114), 71 states have call predecessors, (114), 94 states have return successors, (156), 118 states have call predecessors, (156), 108 states have call successors, (156) [2021-10-13 00:37:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1277 transitions. [2021-10-13 00:37:15,069 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1277 transitions. Word has length 63 [2021-10-13 00:37:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:15,070 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1277 transitions. [2021-10-13 00:37:15,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:37:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1277 transitions. [2021-10-13 00:37:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:37:15,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:15,074 INFO L512 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] [2021-10-13 00:37:15,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:15,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:15,295 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1442764696, now seen corresponding path program 1 times [2021-10-13 00:37:15,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:15,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575451995] [2021-10-13 00:37:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:15,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:15,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:15,298 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:15,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 00:37:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:16,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:16,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:16,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:17,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:17,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575451995] [2021-10-13 00:37:17,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575451995] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:17,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:17,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:37:17,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055142073] [2021-10-13 00:37:17,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:37:17,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:37:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:37:17,078 INFO L87 Difference]: Start difference. First operand 999 states and 1277 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:37:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:17,105 INFO L93 Difference]: Finished difference Result 1116 states and 1427 transitions. [2021-10-13 00:37:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:37:17,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2021-10-13 00:37:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:17,110 INFO L225 Difference]: With dead ends: 1116 [2021-10-13 00:37:17,110 INFO L226 Difference]: Without dead ends: 1116 [2021-10-13 00:37:17,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:37:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-10-13 00:37:17,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1076. [2021-10-13 00:37:17,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 852 states have (on average 1.2734741784037558) internal successors, (1085), 878 states have internal predecessors, (1085), 118 states have call successors, (118), 76 states have call predecessors, (118), 105 states have return successors, (171), 127 states have call predecessors, (171), 113 states have call successors, (171) [2021-10-13 00:37:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1374 transitions. [2021-10-13 00:37:17,137 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1374 transitions. Word has length 67 [2021-10-13 00:37:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:17,138 INFO L470 AbstractCegarLoop]: Abstraction has 1076 states and 1374 transitions. [2021-10-13 00:37:17,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-10-13 00:37:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1374 transitions. [2021-10-13 00:37:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 00:37:17,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:17,142 INFO L512 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] [2021-10-13 00:37:17,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:17,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:17,356 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1342190428, now seen corresponding path program 1 times [2021-10-13 00:37:17,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:17,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985721298] [2021-10-13 00:37:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:17,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:17,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:17,360 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:17,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 00:37:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:18,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:18,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:18,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:19,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:19,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985721298] [2021-10-13 00:37:19,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985721298] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:19,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:19,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:37:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390291922] [2021-10-13 00:37:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:37:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:37:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:19,017 INFO L87 Difference]: Start difference. First operand 1076 states and 1374 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:19,099 INFO L93 Difference]: Finished difference Result 1070 states and 1364 transitions. [2021-10-13 00:37:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:37:19,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-10-13 00:37:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:19,102 INFO L225 Difference]: With dead ends: 1070 [2021-10-13 00:37:19,103 INFO L226 Difference]: Without dead ends: 1070 [2021-10-13 00:37:19,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-10-13 00:37:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2021-10-13 00:37:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 847 states have (on average 1.271546635182999) internal successors, (1077), 873 states have internal predecessors, (1077), 117 states have call successors, (117), 76 states have call predecessors, (117), 105 states have return successors, (170), 126 states have call predecessors, (170), 112 states have call successors, (170) [2021-10-13 00:37:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1364 transitions. [2021-10-13 00:37:19,127 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1364 transitions. Word has length 65 [2021-10-13 00:37:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:19,128 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1364 transitions. [2021-10-13 00:37:19,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1364 transitions. [2021-10-13 00:37:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 00:37:19,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:19,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:19,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:19,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:19,352 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:19,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:19,352 INFO L82 PathProgramCache]: Analyzing trace with hash 408725214, now seen corresponding path program 1 times [2021-10-13 00:37:19,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:19,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315920243] [2021-10-13 00:37:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:19,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:19,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:19,355 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:19,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 00:37:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:20,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:37:20,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:20,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:21,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:21,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315920243] [2021-10-13 00:37:21,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315920243] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:21,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:21,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-13 00:37:21,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005806648] [2021-10-13 00:37:21,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:37:21,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:37:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:37:21,055 INFO L87 Difference]: Start difference. First operand 1070 states and 1364 transitions. Second operand has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-10-13 00:37:21,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:21,166 INFO L93 Difference]: Finished difference Result 1076 states and 1371 transitions. [2021-10-13 00:37:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:37:21,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 70 [2021-10-13 00:37:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:21,171 INFO L225 Difference]: With dead ends: 1076 [2021-10-13 00:37:21,171 INFO L226 Difference]: Without dead ends: 1076 [2021-10-13 00:37:21,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.1ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:37:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-10-13 00:37:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1069. [2021-10-13 00:37:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 847 states have (on average 1.271546635182999) internal successors, (1077), 872 states have internal predecessors, (1077), 116 states have call successors, (116), 76 states have call predecessors, (116), 105 states have return successors, (168), 126 states have call predecessors, (168), 111 states have call successors, (168) [2021-10-13 00:37:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1361 transitions. [2021-10-13 00:37:21,197 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1361 transitions. Word has length 70 [2021-10-13 00:37:21,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:21,197 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1361 transitions. [2021-10-13 00:37:21,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-10-13 00:37:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1361 transitions. [2021-10-13 00:37:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-13 00:37:21,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:21,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:37:21,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:21,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:21,423 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:21,423 INFO L82 PathProgramCache]: Analyzing trace with hash 549625310, now seen corresponding path program 1 times [2021-10-13 00:37:21,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:21,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433608572] [2021-10-13 00:37:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:21,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:21,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:21,424 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:21,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 00:37:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:22,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:37:22,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:22,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:23,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:23,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433608572] [2021-10-13 00:37:23,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433608572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:23,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:23,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-13 00:37:23,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496666152] [2021-10-13 00:37:23,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 00:37:23,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:23,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 00:37:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:37:23,511 INFO L87 Difference]: Start difference. First operand 1069 states and 1361 transitions. Second operand has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 18 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 9 states have return successors, (13), 11 states have call predecessors, (13), 5 states have call successors, (13) [2021-10-13 00:37:23,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:23,951 INFO L93 Difference]: Finished difference Result 1095 states and 1393 transitions. [2021-10-13 00:37:23,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:37:23,952 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 18 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 9 states have return successors, (13), 11 states have call predecessors, (13), 5 states have call successors, (13) Word has length 70 [2021-10-13 00:37:23,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:23,955 INFO L225 Difference]: With dead ends: 1095 [2021-10-13 00:37:23,956 INFO L226 Difference]: Without dead ends: 1071 [2021-10-13 00:37:23,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 389.9ms TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:37:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-10-13 00:37:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1066. [2021-10-13 00:37:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 845 states have (on average 1.2698224852071005) internal successors, (1073), 870 states have internal predecessors, (1073), 115 states have call successors, (115), 76 states have call predecessors, (115), 105 states have return successors, (167), 125 states have call predecessors, (167), 110 states have call successors, (167) [2021-10-13 00:37:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1355 transitions. [2021-10-13 00:37:23,983 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1355 transitions. Word has length 70 [2021-10-13 00:37:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:23,984 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1355 transitions. [2021-10-13 00:37:23,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 18 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 9 states have return successors, (13), 11 states have call predecessors, (13), 5 states have call successors, (13) [2021-10-13 00:37:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1355 transitions. [2021-10-13 00:37:23,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:37:23,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:23,988 INFO L512 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] [2021-10-13 00:37:24,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:24,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:24,203 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:24,203 INFO L82 PathProgramCache]: Analyzing trace with hash -230207487, now seen corresponding path program 1 times [2021-10-13 00:37:24,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:24,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315479764] [2021-10-13 00:37:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:24,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:24,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:24,206 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:24,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 00:37:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:25,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:37:25,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:26,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:26,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:26,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315479764] [2021-10-13 00:37:26,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315479764] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:26,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:26,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 00:37:26,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767143734] [2021-10-13 00:37:26,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:37:26,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:26,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:37:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:37:26,559 INFO L87 Difference]: Start difference. First operand 1066 states and 1355 transitions. Second operand has 22 states, 20 states have (on average 3.6) internal successors, (72), 16 states have internal predecessors, (72), 6 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2021-10-13 00:37:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:26,824 INFO L93 Difference]: Finished difference Result 1088 states and 1381 transitions. [2021-10-13 00:37:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:37:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.6) internal successors, (72), 16 states have internal predecessors, (72), 6 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) Word has length 67 [2021-10-13 00:37:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:26,827 INFO L225 Difference]: With dead ends: 1088 [2021-10-13 00:37:26,827 INFO L226 Difference]: Without dead ends: 1067 [2021-10-13 00:37:26,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 287.4ms TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:37:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-10-13 00:37:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1064. [2021-10-13 00:37:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 844 states have (on average 1.268957345971564) internal successors, (1071), 869 states have internal predecessors, (1071), 114 states have call successors, (114), 76 states have call predecessors, (114), 105 states have return successors, (166), 124 states have call predecessors, (166), 109 states have call successors, (166) [2021-10-13 00:37:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1351 transitions. [2021-10-13 00:37:26,847 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1351 transitions. Word has length 67 [2021-10-13 00:37:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:26,847 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1351 transitions. [2021-10-13 00:37:26,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.6) internal successors, (72), 16 states have internal predecessors, (72), 6 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2021-10-13 00:37:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1351 transitions. [2021-10-13 00:37:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 00:37:26,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:26,851 INFO L512 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] [2021-10-13 00:37:26,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:27,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:27,073 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash 578164593, now seen corresponding path program 1 times [2021-10-13 00:37:27,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:27,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968157422] [2021-10-13 00:37:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:27,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:27,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:27,074 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:27,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 00:37:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:28,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:28,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:28,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:28,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:28,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968157422] [2021-10-13 00:37:28,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968157422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:28,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:28,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:37:28,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554557243] [2021-10-13 00:37:28,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:37:28,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:37:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:28,725 INFO L87 Difference]: Start difference. First operand 1064 states and 1351 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:28,765 INFO L93 Difference]: Finished difference Result 1064 states and 1350 transitions. [2021-10-13 00:37:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:37:28,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2021-10-13 00:37:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:28,768 INFO L225 Difference]: With dead ends: 1064 [2021-10-13 00:37:28,768 INFO L226 Difference]: Without dead ends: 1059 [2021-10-13 00:37:28,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 25.5ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2021-10-13 00:37:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1059. [2021-10-13 00:37:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 840 states have (on average 1.2678571428571428) internal successors, (1065), 865 states have internal predecessors, (1065), 113 states have call successors, (113), 76 states have call predecessors, (113), 105 states have return successors, (165), 123 states have call predecessors, (165), 108 states have call successors, (165) [2021-10-13 00:37:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1343 transitions. [2021-10-13 00:37:28,786 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1343 transitions. Word has length 67 [2021-10-13 00:37:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:28,786 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1343 transitions. [2021-10-13 00:37:28,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1343 transitions. [2021-10-13 00:37:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-13 00:37:28,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:28,790 INFO L512 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] [2021-10-13 00:37:28,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:29,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:29,003 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash -601739544, now seen corresponding path program 1 times [2021-10-13 00:37:29,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:29,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822901089] [2021-10-13 00:37:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:29,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:29,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:29,006 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:29,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 00:37:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:30,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:31,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:31,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:31,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822901089] [2021-10-13 00:37:31,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822901089] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:31,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:31,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:37:31,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200703982] [2021-10-13 00:37:31,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:37:31,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:37:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:31,352 INFO L87 Difference]: Start difference. First operand 1059 states and 1343 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-13 00:37:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:31,804 INFO L93 Difference]: Finished difference Result 1067 states and 1347 transitions. [2021-10-13 00:37:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:37:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 68 [2021-10-13 00:37:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:31,807 INFO L225 Difference]: With dead ends: 1067 [2021-10-13 00:37:31,807 INFO L226 Difference]: Without dead ends: 1067 [2021-10-13 00:37:31,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:37:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-10-13 00:37:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1059. [2021-10-13 00:37:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 840 states have (on average 1.2654761904761904) internal successors, (1063), 865 states have internal predecessors, (1063), 113 states have call successors, (113), 76 states have call predecessors, (113), 105 states have return successors, (165), 123 states have call predecessors, (165), 108 states have call successors, (165) [2021-10-13 00:37:31,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1341 transitions. [2021-10-13 00:37:31,833 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1341 transitions. Word has length 68 [2021-10-13 00:37:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:31,834 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1341 transitions. [2021-10-13 00:37:31,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2021-10-13 00:37:31,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1341 transitions. [2021-10-13 00:37:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-13 00:37:31,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:31,838 INFO L512 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] [2021-10-13 00:37:31,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:32,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:32,054 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:32,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:32,055 INFO L82 PathProgramCache]: Analyzing trace with hash -275884697, now seen corresponding path program 1 times [2021-10-13 00:37:32,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:32,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270652894] [2021-10-13 00:37:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:32,055 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:32,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:32,057 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:32,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 00:37:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:33,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:37:33,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:33,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:33,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:33,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270652894] [2021-10-13 00:37:33,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270652894] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:33,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:33,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 00:37:33,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211765603] [2021-10-13 00:37:33,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:37:33,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:33,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:37:33,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:37:33,916 INFO L87 Difference]: Start difference. First operand 1059 states and 1341 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:37:33,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:33,934 INFO L93 Difference]: Finished difference Result 1059 states and 1337 transitions. [2021-10-13 00:37:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:37:33,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 72 [2021-10-13 00:37:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:33,938 INFO L225 Difference]: With dead ends: 1059 [2021-10-13 00:37:33,938 INFO L226 Difference]: Without dead ends: 1059 [2021-10-13 00:37:33,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:37:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2021-10-13 00:37:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1059. [2021-10-13 00:37:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 840 states have (on average 1.2607142857142857) internal successors, (1059), 865 states have internal predecessors, (1059), 113 states have call successors, (113), 76 states have call predecessors, (113), 105 states have return successors, (165), 123 states have call predecessors, (165), 108 states have call successors, (165) [2021-10-13 00:37:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1337 transitions. [2021-10-13 00:37:33,961 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1337 transitions. Word has length 72 [2021-10-13 00:37:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:33,962 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1337 transitions. [2021-10-13 00:37:33,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-10-13 00:37:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1337 transitions. [2021-10-13 00:37:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:37:33,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:33,966 INFO L512 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] [2021-10-13 00:37:33,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:34,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:34,193 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:34,194 INFO L82 PathProgramCache]: Analyzing trace with hash 251959398, now seen corresponding path program 1 times [2021-10-13 00:37:34,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:34,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823296792] [2021-10-13 00:37:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:34,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:34,196 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 00:37:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:35,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:37:35,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:36,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:36,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:36,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823296792] [2021-10-13 00:37:36,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823296792] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:36,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:36,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-10-13 00:37:36,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613257975] [2021-10-13 00:37:36,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:37:36,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:36,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:37:36,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:37:36,740 INFO L87 Difference]: Start difference. First operand 1059 states and 1337 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 17 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:37:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:37,259 INFO L93 Difference]: Finished difference Result 1135 states and 1419 transitions. [2021-10-13 00:37:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:37:37,260 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 17 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) Word has length 69 [2021-10-13 00:37:37,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:37,262 INFO L225 Difference]: With dead ends: 1135 [2021-10-13 00:37:37,262 INFO L226 Difference]: Without dead ends: 1069 [2021-10-13 00:37:37,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 424.7ms TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:37:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-10-13 00:37:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1032. [2021-10-13 00:37:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 819 states have (on average 1.26007326007326) internal successors, (1032), 844 states have internal predecessors, (1032), 109 states have call successors, (109), 76 states have call predecessors, (109), 103 states have return successors, (159), 117 states have call predecessors, (159), 104 states have call successors, (159) [2021-10-13 00:37:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1300 transitions. [2021-10-13 00:37:37,282 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1300 transitions. Word has length 69 [2021-10-13 00:37:37,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:37,283 INFO L470 AbstractCegarLoop]: Abstraction has 1032 states and 1300 transitions. [2021-10-13 00:37:37,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 17 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:37:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1300 transitions. [2021-10-13 00:37:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:37:37,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:37,286 INFO L512 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] [2021-10-13 00:37:37,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:37,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:37,499 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:37,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:37,500 INFO L82 PathProgramCache]: Analyzing trace with hash -836181127, now seen corresponding path program 1 times [2021-10-13 00:37:37,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:37,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345405952] [2021-10-13 00:37:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:37,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:37,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:37,502 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:37,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-13 00:37:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:39,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:37:39,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:39,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:39,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:39,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345405952] [2021-10-13 00:37:39,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345405952] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:39,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:39,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 00:37:39,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859466470] [2021-10-13 00:37:39,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:37:39,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:37:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:37:39,697 INFO L87 Difference]: Start difference. First operand 1032 states and 1300 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:39,778 INFO L93 Difference]: Finished difference Result 1037 states and 1306 transitions. [2021-10-13 00:37:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:37:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2021-10-13 00:37:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:39,786 INFO L225 Difference]: With dead ends: 1037 [2021-10-13 00:37:39,786 INFO L226 Difference]: Without dead ends: 1037 [2021-10-13 00:37:39,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:37:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-10-13 00:37:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1030. [2021-10-13 00:37:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 817 states have (on average 1.259485924112607) internal successors, (1029), 842 states have internal predecessors, (1029), 109 states have call successors, (109), 76 states have call predecessors, (109), 103 states have return successors, (159), 117 states have call predecessors, (159), 104 states have call successors, (159) [2021-10-13 00:37:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1297 transitions. [2021-10-13 00:37:39,809 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1297 transitions. Word has length 69 [2021-10-13 00:37:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:39,809 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 1297 transitions. [2021-10-13 00:37:39,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1297 transitions. [2021-10-13 00:37:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:37:39,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:39,813 INFO L512 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] [2021-10-13 00:37:39,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-10-13 00:37:40,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:40,034 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1345654217, now seen corresponding path program 1 times [2021-10-13 00:37:40,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:40,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540249913] [2021-10-13 00:37:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:40,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:40,036 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:40,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-13 00:37:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:41,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:37:41,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:41,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:42,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:42,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540249913] [2021-10-13 00:37:42,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540249913] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:42,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:42,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-13 00:37:42,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382060820] [2021-10-13 00:37:42,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:37:42,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:37:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:37:42,277 INFO L87 Difference]: Start difference. First operand 1030 states and 1297 transitions. Second operand has 20 states, 20 states have (on average 3.8) internal successors, (76), 14 states have internal predecessors, (76), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:37:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:42,427 INFO L93 Difference]: Finished difference Result 1054 states and 1325 transitions. [2021-10-13 00:37:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:37:42,428 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 14 states have internal predecessors, (76), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2021-10-13 00:37:42,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:42,430 INFO L225 Difference]: With dead ends: 1054 [2021-10-13 00:37:42,430 INFO L226 Difference]: Without dead ends: 1027 [2021-10-13 00:37:42,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 213.9ms TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:37:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-10-13 00:37:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2021-10-13 00:37:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 815 states have (on average 1.2576687116564418) internal successors, (1025), 840 states have internal predecessors, (1025), 108 states have call successors, (108), 76 states have call predecessors, (108), 103 states have return successors, (158), 116 states have call predecessors, (158), 103 states have call successors, (158) [2021-10-13 00:37:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1291 transitions. [2021-10-13 00:37:42,454 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1291 transitions. Word has length 69 [2021-10-13 00:37:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:42,455 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1291 transitions. [2021-10-13 00:37:42,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 14 states have internal predecessors, (76), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 3 states have call successors, (11) [2021-10-13 00:37:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1291 transitions. [2021-10-13 00:37:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:37:42,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:42,458 INFO L512 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] [2021-10-13 00:37:42,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-13 00:37:42,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:42,671 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:42,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1408920812, now seen corresponding path program 1 times [2021-10-13 00:37:42,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:42,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065234830] [2021-10-13 00:37:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:42,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:42,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:42,674 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:42,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 00:37:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:44,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:44,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:44,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:44,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:44,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065234830] [2021-10-13 00:37:44,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065234830] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:44,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:44,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:37:44,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465205918] [2021-10-13 00:37:44,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:37:44,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:44,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:37:44,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:44,636 INFO L87 Difference]: Start difference. First operand 1027 states and 1291 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:44,672 INFO L93 Difference]: Finished difference Result 1027 states and 1290 transitions. [2021-10-13 00:37:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:37:44,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2021-10-13 00:37:44,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:44,674 INFO L225 Difference]: With dead ends: 1027 [2021-10-13 00:37:44,674 INFO L226 Difference]: Without dead ends: 1022 [2021-10-13 00:37:44,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-10-13 00:37:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1022. [2021-10-13 00:37:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 811 states have (on average 1.2564734895191123) internal successors, (1019), 836 states have internal predecessors, (1019), 107 states have call successors, (107), 76 states have call predecessors, (107), 103 states have return successors, (157), 115 states have call predecessors, (157), 102 states have call successors, (157) [2021-10-13 00:37:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1283 transitions. [2021-10-13 00:37:44,688 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1283 transitions. Word has length 69 [2021-10-13 00:37:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:44,688 INFO L470 AbstractCegarLoop]: Abstraction has 1022 states and 1283 transitions. [2021-10-13 00:37:44,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:37:44,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1283 transitions. [2021-10-13 00:37:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:37:44,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:44,690 INFO L512 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] [2021-10-13 00:37:44,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-13 00:37:44,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:44,891 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:44,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2114383891, now seen corresponding path program 1 times [2021-10-13 00:37:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:44,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022803235] [2021-10-13 00:37:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:44,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:44,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:44,894 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:44,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 00:37:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:46,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:37:46,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:46,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:47,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:47,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022803235] [2021-10-13 00:37:47,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022803235] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:47,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:47,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-10-13 00:37:47,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731508514] [2021-10-13 00:37:47,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:37:47,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:37:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:37:47,497 INFO L87 Difference]: Start difference. First operand 1022 states and 1283 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 15 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (10), 7 states have call predecessors, (10), 1 states have call successors, (10) [2021-10-13 00:37:47,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:47,960 INFO L93 Difference]: Finished difference Result 1106 states and 1371 transitions. [2021-10-13 00:37:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 00:37:47,961 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 15 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (10), 7 states have call predecessors, (10), 1 states have call successors, (10) Word has length 69 [2021-10-13 00:37:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:47,963 INFO L225 Difference]: With dead ends: 1106 [2021-10-13 00:37:47,963 INFO L226 Difference]: Without dead ends: 967 [2021-10-13 00:37:47,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 396.0ms TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:37:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-10-13 00:37:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 955. [2021-10-13 00:37:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 756 states have (on average 1.253968253968254) internal successors, (948), 778 states have internal predecessors, (948), 105 states have call successors, (105), 74 states have call predecessors, (105), 93 states have return successors, (147), 106 states have call predecessors, (147), 100 states have call successors, (147) [2021-10-13 00:37:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1200 transitions. [2021-10-13 00:37:47,979 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1200 transitions. Word has length 69 [2021-10-13 00:37:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:47,980 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1200 transitions. [2021-10-13 00:37:47,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 15 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (10), 7 states have call predecessors, (10), 1 states have call successors, (10) [2021-10-13 00:37:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1200 transitions. [2021-10-13 00:37:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 00:37:47,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:47,983 INFO L512 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] [2021-10-13 00:37:48,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:48,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:48,191 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:48,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2137250320, now seen corresponding path program 1 times [2021-10-13 00:37:48,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:48,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181220027] [2021-10-13 00:37:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:48,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:48,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:48,194 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:48,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-13 00:37:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:49,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:37:49,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:50,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:50,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:50,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181220027] [2021-10-13 00:37:50,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181220027] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:50,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:50,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-13 00:37:50,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304850834] [2021-10-13 00:37:50,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:37:50,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:50,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:37:50,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:37:50,477 INFO L87 Difference]: Start difference. First operand 955 states and 1200 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 5 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-13 00:37:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:50,608 INFO L93 Difference]: Finished difference Result 960 states and 1206 transitions. [2021-10-13 00:37:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:37:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 5 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 74 [2021-10-13 00:37:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:50,612 INFO L225 Difference]: With dead ends: 960 [2021-10-13 00:37:50,613 INFO L226 Difference]: Without dead ends: 960 [2021-10-13 00:37:50,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:37:50,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-10-13 00:37:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 955. [2021-10-13 00:37:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 756 states have (on average 1.253968253968254) internal successors, (948), 778 states have internal predecessors, (948), 105 states have call successors, (105), 74 states have call predecessors, (105), 93 states have return successors, (146), 106 states have call predecessors, (146), 100 states have call successors, (146) [2021-10-13 00:37:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1199 transitions. [2021-10-13 00:37:50,634 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1199 transitions. Word has length 74 [2021-10-13 00:37:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:50,635 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1199 transitions. [2021-10-13 00:37:50,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 9 states have internal predecessors, (60), 5 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-13 00:37:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1199 transitions. [2021-10-13 00:37:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 00:37:50,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:50,647 INFO L512 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] [2021-10-13 00:37:50,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:50,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:50,870 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:50,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1435650446, now seen corresponding path program 1 times [2021-10-13 00:37:50,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:50,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880002346] [2021-10-13 00:37:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:50,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:50,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:50,872 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:50,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-13 00:37:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:52,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:37:52,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:52,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:53,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:53,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880002346] [2021-10-13 00:37:53,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880002346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:53,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:53,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-13 00:37:53,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364676853] [2021-10-13 00:37:53,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 00:37:53,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 00:37:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:37:53,495 INFO L87 Difference]: Start difference. First operand 955 states and 1199 transitions. Second operand has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 18 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 9 states have return successors, (14), 11 states have call predecessors, (14), 5 states have call successors, (14) [2021-10-13 00:37:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:53,834 INFO L93 Difference]: Finished difference Result 977 states and 1225 transitions. [2021-10-13 00:37:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:37:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 18 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 9 states have return successors, (14), 11 states have call predecessors, (14), 5 states have call successors, (14) Word has length 74 [2021-10-13 00:37:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:53,838 INFO L225 Difference]: With dead ends: 977 [2021-10-13 00:37:53,838 INFO L226 Difference]: Without dead ends: 947 [2021-10-13 00:37:53,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 391.9ms TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:37:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-10-13 00:37:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 944. [2021-10-13 00:37:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 749 states have (on average 1.253671562082777) internal successors, (939), 770 states have internal predecessors, (939), 101 states have call successors, (101), 74 states have call predecessors, (101), 93 states have return successors, (141), 103 states have call predecessors, (141), 96 states have call successors, (141) [2021-10-13 00:37:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1181 transitions. [2021-10-13 00:37:53,859 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1181 transitions. Word has length 74 [2021-10-13 00:37:53,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:53,859 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1181 transitions. [2021-10-13 00:37:53,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 18 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 9 states have return successors, (14), 11 states have call predecessors, (14), 5 states have call successors, (14) [2021-10-13 00:37:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1181 transitions. [2021-10-13 00:37:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 00:37:53,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:53,862 INFO L512 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] [2021-10-13 00:37:53,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:54,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:54,084 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:54,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1935111860, now seen corresponding path program 1 times [2021-10-13 00:37:54,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:54,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701176502] [2021-10-13 00:37:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:54,085 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:54,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:54,087 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:54,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-13 00:37:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:55,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:55,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:55,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:56,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:56,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701176502] [2021-10-13 00:37:56,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701176502] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:56,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:56,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:37:56,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623142069] [2021-10-13 00:37:56,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:37:56,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:37:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:56,150 INFO L87 Difference]: Start difference. First operand 944 states and 1181 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-13 00:37:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:56,198 INFO L93 Difference]: Finished difference Result 947 states and 1184 transitions. [2021-10-13 00:37:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:37:56,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2021-10-13 00:37:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:56,200 INFO L225 Difference]: With dead ends: 947 [2021-10-13 00:37:56,200 INFO L226 Difference]: Without dead ends: 940 [2021-10-13 00:37:56,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-10-13 00:37:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 937. [2021-10-13 00:37:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 743 states have (on average 1.2543741588156123) internal successors, (932), 764 states have internal predecessors, (932), 100 states have call successors, (100), 74 states have call predecessors, (100), 93 states have return successors, (139), 102 states have call predecessors, (139), 95 states have call successors, (139) [2021-10-13 00:37:56,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1171 transitions. [2021-10-13 00:37:56,214 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1171 transitions. Word has length 71 [2021-10-13 00:37:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:56,215 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1171 transitions. [2021-10-13 00:37:56,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-13 00:37:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1171 transitions. [2021-10-13 00:37:56,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 00:37:56,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:56,217 INFO L512 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] [2021-10-13 00:37:56,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:56,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:56,441 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:56,442 INFO L82 PathProgramCache]: Analyzing trace with hash -352299179, now seen corresponding path program 1 times [2021-10-13 00:37:56,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:56,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522143806] [2021-10-13 00:37:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:56,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:56,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:56,443 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:56,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-13 00:37:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:37:58,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:37:58,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:37:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:58,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:37:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:37:58,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:37:58,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522143806] [2021-10-13 00:37:58,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522143806] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:37:58,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:37:58,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:37:58,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773965641] [2021-10-13 00:37:58,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:37:58,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:37:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:37:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:58,526 INFO L87 Difference]: Start difference. First operand 937 states and 1171 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-13 00:37:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:37:58,558 INFO L93 Difference]: Finished difference Result 940 states and 1174 transitions. [2021-10-13 00:37:58,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:37:58,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2021-10-13 00:37:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:37:58,571 INFO L225 Difference]: With dead ends: 940 [2021-10-13 00:37:58,572 INFO L226 Difference]: Without dead ends: 934 [2021-10-13 00:37:58,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:37:58,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-10-13 00:37:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 931. [2021-10-13 00:37:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 738 states have (on average 1.2547425474254743) internal successors, (926), 759 states have internal predecessors, (926), 99 states have call successors, (99), 74 states have call predecessors, (99), 93 states have return successors, (138), 101 states have call predecessors, (138), 94 states have call successors, (138) [2021-10-13 00:37:58,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1163 transitions. [2021-10-13 00:37:58,592 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1163 transitions. Word has length 71 [2021-10-13 00:37:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:37:58,592 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1163 transitions. [2021-10-13 00:37:58,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-13 00:37:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1163 transitions. [2021-10-13 00:37:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 00:37:58,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:37:58,595 INFO L512 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] [2021-10-13 00:37:58,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-13 00:37:58,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:37:58,809 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:37:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:37:58,809 INFO L82 PathProgramCache]: Analyzing trace with hash 893345963, now seen corresponding path program 1 times [2021-10-13 00:37:58,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:37:58,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49094128] [2021-10-13 00:37:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:37:58,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:37:58,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:37:58,812 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:37:58,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-13 00:38:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:00,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:38:00,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:00,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:00,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:00,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49094128] [2021-10-13 00:38:00,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49094128] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:00,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:00,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 00:38:00,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742553769] [2021-10-13 00:38:00,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:38:00,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:00,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:38:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:38:00,885 INFO L87 Difference]: Start difference. First operand 931 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:38:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:00,917 INFO L93 Difference]: Finished difference Result 939 states and 1169 transitions. [2021-10-13 00:38:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:38:00,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2021-10-13 00:38:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:00,920 INFO L225 Difference]: With dead ends: 939 [2021-10-13 00:38:00,921 INFO L226 Difference]: Without dead ends: 933 [2021-10-13 00:38:00,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:38:00,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-10-13 00:38:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 931. [2021-10-13 00:38:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 738 states have (on average 1.2520325203252032) internal successors, (924), 759 states have internal predecessors, (924), 99 states have call successors, (99), 74 states have call predecessors, (99), 93 states have return successors, (138), 101 states have call predecessors, (138), 94 states have call successors, (138) [2021-10-13 00:38:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1161 transitions. [2021-10-13 00:38:00,940 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1161 transitions. Word has length 71 [2021-10-13 00:38:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:00,940 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1161 transitions. [2021-10-13 00:38:00,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-13 00:38:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1161 transitions. [2021-10-13 00:38:00,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 00:38:00,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:00,943 INFO L512 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] [2021-10-13 00:38:00,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:01,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:01,159 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:38:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash -955000686, now seen corresponding path program 1 times [2021-10-13 00:38:01,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:01,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311360863] [2021-10-13 00:38:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:01,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:01,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:01,161 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:01,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-13 00:38:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:03,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:38:03,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:03,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:03,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:03,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311360863] [2021-10-13 00:38:03,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311360863] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:03,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:03,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-10-13 00:38:03,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048317000] [2021-10-13 00:38:03,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:38:03,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:38:03,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:38:03,608 INFO L87 Difference]: Start difference. First operand 931 states and 1161 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-13 00:38:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:03,693 INFO L93 Difference]: Finished difference Result 926 states and 1151 transitions. [2021-10-13 00:38:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:38:03,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 77 [2021-10-13 00:38:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:03,697 INFO L225 Difference]: With dead ends: 926 [2021-10-13 00:38:03,698 INFO L226 Difference]: Without dead ends: 921 [2021-10-13 00:38:03,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.3ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:38:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-10-13 00:38:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 919. [2021-10-13 00:38:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 729 states have (on average 1.2482853223593964) internal successors, (910), 748 states have internal predecessors, (910), 97 states have call successors, (97), 74 states have call predecessors, (97), 92 states have return successors, (135), 100 states have call predecessors, (135), 92 states have call successors, (135) [2021-10-13 00:38:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1142 transitions. [2021-10-13 00:38:03,718 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1142 transitions. Word has length 77 [2021-10-13 00:38:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:03,718 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1142 transitions. [2021-10-13 00:38:03,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-13 00:38:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1142 transitions. [2021-10-13 00:38:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:38:03,721 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:03,721 INFO L512 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] [2021-10-13 00:38:03,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:03,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:03,935 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:38:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash 590470428, now seen corresponding path program 1 times [2021-10-13 00:38:03,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:03,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150004797] [2021-10-13 00:38:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:03,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:03,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:03,938 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:03,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-13 00:38:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:05,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:38:05,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:06,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:06,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:06,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150004797] [2021-10-13 00:38:06,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150004797] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:06,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:06,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:38:06,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601822659] [2021-10-13 00:38:06,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:38:06,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:06,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:38:06,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:38:06,311 INFO L87 Difference]: Start difference. First operand 919 states and 1142 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-13 00:38:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:06,332 INFO L93 Difference]: Finished difference Result 916 states and 1136 transitions. [2021-10-13 00:38:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:38:06,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 73 [2021-10-13 00:38:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:06,335 INFO L225 Difference]: With dead ends: 916 [2021-10-13 00:38:06,335 INFO L226 Difference]: Without dead ends: 905 [2021-10-13 00:38:06,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:38:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-10-13 00:38:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 905. [2021-10-13 00:38:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 717 states have (on average 1.2440725244072524) internal successors, (892), 736 states have internal predecessors, (892), 95 states have call successors, (95), 74 states have call predecessors, (95), 92 states have return successors, (133), 98 states have call predecessors, (133), 90 states have call successors, (133) [2021-10-13 00:38:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1120 transitions. [2021-10-13 00:38:06,354 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1120 transitions. Word has length 73 [2021-10-13 00:38:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:06,354 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 1120 transitions. [2021-10-13 00:38:06,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-13 00:38:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1120 transitions. [2021-10-13 00:38:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 00:38:06,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:06,356 INFO L512 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, 1, 1] [2021-10-13 00:38:06,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:06,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:06,579 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:38:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:06,579 INFO L82 PathProgramCache]: Analyzing trace with hash 540964971, now seen corresponding path program 1 times [2021-10-13 00:38:06,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:06,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925049041] [2021-10-13 00:38:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:06,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:06,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:06,581 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:06,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-13 00:38:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:08,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:38:08,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:08,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:09,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:09,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925049041] [2021-10-13 00:38:09,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925049041] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:09,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:09,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-10-13 00:38:09,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066982515] [2021-10-13 00:38:09,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:38:09,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:38:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:38:09,602 INFO L87 Difference]: Start difference. First operand 905 states and 1120 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 17 states have internal predecessors, (84), 2 states have call successors, (10), 2 states have call predecessors, (10), 9 states have return successors, (12), 9 states have call predecessors, (12), 1 states have call successors, (12) [2021-10-13 00:38:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:10,133 INFO L93 Difference]: Finished difference Result 971 states and 1190 transitions. [2021-10-13 00:38:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:38:10,134 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 17 states have internal predecessors, (84), 2 states have call successors, (10), 2 states have call predecessors, (10), 9 states have return successors, (12), 9 states have call predecessors, (12), 1 states have call successors, (12) Word has length 79 [2021-10-13 00:38:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:10,135 INFO L225 Difference]: With dead ends: 971 [2021-10-13 00:38:10,135 INFO L226 Difference]: Without dead ends: 913 [2021-10-13 00:38:10,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 429.8ms TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:38:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2021-10-13 00:38:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 617. [2021-10-13 00:38:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 489 states have (on average 1.2085889570552146) internal successors, (591), 501 states have internal predecessors, (591), 65 states have call successors, (65), 52 states have call predecessors, (65), 62 states have return successors, (85), 67 states have call predecessors, (85), 60 states have call successors, (85) [2021-10-13 00:38:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 741 transitions. [2021-10-13 00:38:10,146 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 741 transitions. Word has length 79 [2021-10-13 00:38:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:10,146 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 741 transitions. [2021-10-13 00:38:10,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 17 states have internal predecessors, (84), 2 states have call successors, (10), 2 states have call predecessors, (10), 9 states have return successors, (12), 9 states have call predecessors, (12), 1 states have call successors, (12) [2021-10-13 00:38:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 741 transitions. [2021-10-13 00:38:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-13 00:38:10,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:10,147 INFO L512 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] [2021-10-13 00:38:10,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:10,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:10,372 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:38:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2040120255, now seen corresponding path program 1 times [2021-10-13 00:38:10,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:10,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608948660] [2021-10-13 00:38:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:10,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:10,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:10,375 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:10,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-13 00:38:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:12,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:38:12,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:12,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:13,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:13,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608948660] [2021-10-13 00:38:13,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608948660] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:13,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:13,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-10-13 00:38:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579928254] [2021-10-13 00:38:13,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:38:13,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:38:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:38:13,319 INFO L87 Difference]: Start difference. First operand 617 states and 741 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 17 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:38:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:13,876 INFO L93 Difference]: Finished difference Result 659 states and 783 transitions. [2021-10-13 00:38:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:38:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 17 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) Word has length 72 [2021-10-13 00:38:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:13,878 INFO L225 Difference]: With dead ends: 659 [2021-10-13 00:38:13,878 INFO L226 Difference]: Without dead ends: 534 [2021-10-13 00:38:13,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 401.6ms TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:38:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-13 00:38:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 525. [2021-10-13 00:38:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 413 states have (on average 1.2179176755447942) internal successors, (503), 422 states have internal predecessors, (503), 58 states have call successors, (58), 46 states have call predecessors, (58), 53 states have return successors, (75), 59 states have call predecessors, (75), 54 states have call successors, (75) [2021-10-13 00:38:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 636 transitions. [2021-10-13 00:38:13,884 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 636 transitions. Word has length 72 [2021-10-13 00:38:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:13,884 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 636 transitions. [2021-10-13 00:38:13,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 17 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (11), 9 states have call predecessors, (11), 1 states have call successors, (11) [2021-10-13 00:38:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 636 transitions. [2021-10-13 00:38:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:38:13,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:13,886 INFO L512 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] [2021-10-13 00:38:13,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:14,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:14,086 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:38:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1410736977, now seen corresponding path program 1 times [2021-10-13 00:38:14,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:14,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249431186] [2021-10-13 00:38:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:14,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:14,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:14,089 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:14,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-13 00:38:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:16,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:38:16,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:16,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:38:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:16,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:38:16,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249431186] [2021-10-13 00:38:16,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249431186] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:16,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:16,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 00:38:16,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267243679] [2021-10-13 00:38:16,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:38:16,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:38:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:38:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:38:16,481 INFO L87 Difference]: Start difference. First operand 525 states and 636 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:38:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:16,505 INFO L93 Difference]: Finished difference Result 523 states and 632 transitions. [2021-10-13 00:38:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:38:16,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2021-10-13 00:38:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:16,506 INFO L225 Difference]: With dead ends: 523 [2021-10-13 00:38:16,506 INFO L226 Difference]: Without dead ends: 515 [2021-10-13 00:38:16,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:38:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-10-13 00:38:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2021-10-13 00:38:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 404 states have (on average 1.2178217821782178) internal successors, (492), 413 states have internal predecessors, (492), 57 states have call successors, (57), 46 states have call predecessors, (57), 53 states have return successors, (73), 58 states have call predecessors, (73), 53 states have call successors, (73) [2021-10-13 00:38:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 622 transitions. [2021-10-13 00:38:16,513 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 622 transitions. Word has length 73 [2021-10-13 00:38:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:16,513 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 622 transitions. [2021-10-13 00:38:16,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-13 00:38:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 622 transitions. [2021-10-13 00:38:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-13 00:38:16,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:16,514 INFO L512 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] [2021-10-13 00:38:16,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-13 00:38:16,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:16,714 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-13 00:38:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash -586736919, now seen corresponding path program 1 times [2021-10-13 00:38:16,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:38:16,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703114871] [2021-10-13 00:38:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:16,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:38:16,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:38:16,716 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:38:16,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-13 00:38:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:18,801 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:38:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:38:19,283 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:38:19,284 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:38:19,285 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 00:38:19,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:38:19,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:19,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:38:19,518 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:38:19,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:38:19 BoogieIcfgContainer [2021-10-13 00:38:19,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:38:19,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:38:19,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:38:19,758 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:38:19,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:36:02" (3/4) ... [2021-10-13 00:38:19,762 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:38:19,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:38:19,764 INFO L168 Benchmark]: Toolchain (without parser) took 140238.64 ms. Allocated memory was 83.9 MB in the beginning and 251.7 MB in the end (delta: 167.8 MB). Free memory was 65.0 MB in the beginning and 151.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:19,765 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 64.1 MB in the beginning and 64.0 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:38:19,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.23 ms. Allocated memory is still 83.9 MB. Free memory was 64.8 MB in the beginning and 47.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:19,767 INFO L168 Benchmark]: Boogie Preprocessor took 193.71 ms. Allocated memory is still 83.9 MB. Free memory was 47.7 MB in the beginning and 42.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:19,767 INFO L168 Benchmark]: RCFGBuilder took 1907.43 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 42.3 MB in the beginning and 72.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:19,768 INFO L168 Benchmark]: TraceAbstraction took 137249.51 ms. Allocated memory was 119.5 MB in the beginning and 251.7 MB in the end (delta: 132.1 MB). Free memory was 71.7 MB in the beginning and 151.8 MB in the end (delta: -80.2 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:38:19,768 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 251.7 MB. Free memory is still 151.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:38:19,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 64.1 MB in the beginning and 64.0 MB in the end (delta: 60.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 876.23 ms. Allocated memory is still 83.9 MB. Free memory was 64.8 MB in the beginning and 47.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 193.71 ms. Allocated memory is still 83.9 MB. Free memory was 47.7 MB in the beginning and 42.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1907.43 ms. Allocated memory was 83.9 MB in the beginning and 119.5 MB in the end (delta: 35.7 MB). Free memory was 42.3 MB in the beginning and 72.3 MB in the end (delta: -30.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 137249.51 ms. Allocated memory was 119.5 MB in the beginning and 251.7 MB in the end (delta: 132.1 MB). Free memory was 71.7 MB in the beginning and 151.8 MB in the end (delta: -80.2 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 251.7 MB. Free memory is still 151.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 59. Possible FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [\old(compFptr)=29, \old(compRegistered)=10, \old(customIrp)=37, \old(DC)=19, \old(DeviceUsageTypePaging)=26, \old(Executive)=22, \old(IPC)=35, \old(KernelMode)=18, \old(lowerDriverReturn)=20, \old(MPR1)=38, \old(MPR3)=33, \old(myStatus)=8, \old(NP)=36, \old(pended)=34, \old(pirp)=15, \old(routine)=21, \old(s)=24, \old(setEventCalled)=31, \old(SKIP1)=17, \old(SKIP2)=28, \old(Suspended)=9, \old(UNLOADED)=14, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=40, DC=0, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=0, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=41, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1755] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=41, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=5, UNLOADED=0] [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=41, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=41, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=41, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1772] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0, we_should_unload=0] [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=43, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=43, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=43, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=43, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=43, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=44, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=44, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=44, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__AssociatedIrp__SystemBuffer=45, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=44, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=44, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__AssociatedIrp__SystemBuffer=45, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=44, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, Context=44, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__AssociatedIrp__SystemBuffer=45, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(Context)=44, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=44, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__AssociatedIrp__SystemBuffer=45, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=43, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=43, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, Irp__PendingReturned=0, KernelMode=0, lcontext=44, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=43, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=41, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=43, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioHPCdrDeviceControl(DeviceObject, Irp)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=42, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=41, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=3221225659, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=42, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=41, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, CdAudioDeviceControl(devobj, pirp)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, d=40, DC=2, DeviceUsageTypePaging=1, devobj=42, Executive=0, IPC=7, irp=41, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceUsageTypePaging)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(pirp)=0, \old(routine)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(Suspended)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=41, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - UnprovableResult [Line: 1717]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 521 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 136940.7ms, OverallIterations: 60, TraceHistogramMax: 2, EmptinessCheckTime: 276.5ms, AutomataDifference: 23363.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33552 SDtfs, 16575 SDslu, 194145 SDs, 0 SdLazy, 14147 SolverSat, 2319 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15888.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6965 GetRequests, 6288 SyntacticMatches, 0 SemanticMatches, 677 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 7970.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1348occurred in iteration=18, InterpolantAutomatonStates: 589, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2223.1ms AutomataMinimizationTime, 59 MinimizatonAttempts, 2232 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1901.6ms SsaConstructionTime, 8442.5ms SatisfiabilityAnalysisTime, 34301.6ms InterpolantComputationTime, 3529 NumberOfCodeBlocks, 3529 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 6794 ConstructedInterpolants, 0 QuantifiedInterpolants, 14529 SizeOfPredicates, 137 NumberOfNonLiveVariables, 23385 ConjunctsInSsa, 430 ConjunctsInUnsatCore, 118 InterpolantComputations, 118 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:38:19,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8909d629-470b-4cf1-83b1-f3e515a75191/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...