./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:10:10,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:10:10,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:10:10,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:10:10,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:10:10,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:10:10,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:10:10,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:10:10,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:10:10,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:10:10,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:10:10,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:10:10,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:10:10,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:10:10,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:10:10,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:10:10,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:10:10,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:10:10,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:10:10,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:10:10,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:10:10,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:10:10,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:10:10,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:10:10,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:10:10,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:10:10,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:10:10,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:10:10,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:10:10,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:10:10,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:10:10,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:10:10,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:10:10,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:10:10,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:10:10,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:10:10,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:10:10,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:10:10,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:10:10,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:10:10,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:10:10,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:10:10,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:10:10,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:10:10,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:10:10,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:10:11,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:10:11,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:10:11,004 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:10:11,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:10:11,005 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:10:11,005 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:10:11,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:10:11,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:10:11,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:10:11,007 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:10:11,007 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:10:11,007 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:10:11,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:10:11,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:10:11,008 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:10:11,008 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:10:11,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:10:11,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:10:11,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:10:11,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:11,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:10:11,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:10:11,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:10:11,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:10:11,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:10:11,012 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-28 23:10:11,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:10:11,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:10:11,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:10:11,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:10:11,273 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:10:11,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 23:10:11,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/f3d642633/b7a288b715c64043adda8b3f45dc2454/FLAG9b6040fac [2021-10-28 23:10:11,892 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:10:11,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 23:10:11,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/f3d642633/b7a288b715c64043adda8b3f45dc2454/FLAG9b6040fac [2021-10-28 23:10:12,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/f3d642633/b7a288b715c64043adda8b3f45dc2454 [2021-10-28 23:10:12,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:10:12,214 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:10:12,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:12,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:10:12,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:10:12,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b81b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12, skipping insertion in model container [2021-10-28 23:10:12,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:10:12,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:10:12,573 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 23:10:12,577 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 23:10:12,578 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 23:10:12,579 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 23:10:12,580 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 23:10:12,581 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 23:10:12,582 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 23:10:12,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:12,594 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:10:12,629 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 23:10:12,630 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 23:10:12,631 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 23:10:12,632 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 23:10:12,633 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 23:10:12,634 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 23:10:12,635 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 23:10:12,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:12,666 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:10:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12 WrapperNode [2021-10-28 23:10:12,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:12,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:10:12,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:10:12,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:10:12,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:10:12,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:10:12,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:10:12,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:10:12,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (1/1) ... [2021-10-28 23:10:12,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:12,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:12,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:10:12,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:10:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:10:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:10:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:10:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:10:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:10:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:10:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:10:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:10:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:10:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:10:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:10:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:10:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:10:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:10:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:10:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:10:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:10:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:10:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:10:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:10:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:10:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:10:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:10:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:10:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:10:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:10:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:10:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:10:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:10:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:10:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:10:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:10:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:10:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:10:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:10:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:10:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:10:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:10:12,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:10:12,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:10:12,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:10:12,810 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:10:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:10:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:10:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:10:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:10:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:10:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:10:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:10:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:10:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:10:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:10:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:10:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:10:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:10:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:10:12,813 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:10:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:10:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:10:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:10:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:10:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:10:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:10:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:10:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:10:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:10:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:10:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:10:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:10:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:10:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:10:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:10:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:10:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:10:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:10:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:10:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:10:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:10:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:10:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:10:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:10:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:10:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:10:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:10:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:10:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:10:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:10:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:10:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:10:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:10:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:10:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:10:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:10:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:10:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:10:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:10:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:10:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:10:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:10:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:10:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:10:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:10:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:10:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:10:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:10:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:10:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:10:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:10:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:10:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:10:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:10:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:10:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:10:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:10:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:10:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:10:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:10:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:10:13,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:10:13,477 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 23:10:13,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:13 BoogieIcfgContainer [2021-10-28 23:10:13,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:10:13,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:10:13,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:10:13,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:10:13,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:10:12" (1/3) ... [2021-10-28 23:10:13,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee8e173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:13, skipping insertion in model container [2021-10-28 23:10:13,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:12" (2/3) ... [2021-10-28 23:10:13,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee8e173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:13, skipping insertion in model container [2021-10-28 23:10:13,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:13" (3/3) ... [2021-10-28 23:10:13,510 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-28 23:10:13,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:10:13,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-10-28 23:10:13,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:10:13,616 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:10:13,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-10-28 23:10:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 89 states have (on average 2.202247191011236) internal successors, (196), 166 states have internal predecessors, (196), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:10:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:10:13,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:13,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:13,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1463572285, now seen corresponding path program 1 times [2021-10-28 23:10:13,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:13,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631105652] [2021-10-28 23:10:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:13,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:13,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:13,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631105652] [2021-10-28 23:10:13,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631105652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:13,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:13,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:13,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296254822] [2021-10-28 23:10:13,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:13,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:13,950 INFO L87 Difference]: Start difference. First operand has 171 states, 89 states have (on average 2.202247191011236) internal successors, (196), 166 states have internal predecessors, (196), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:14,310 INFO L93 Difference]: Finished difference Result 197 states and 204 transitions. [2021-10-28 23:10:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 23:10:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:14,332 INFO L225 Difference]: With dead ends: 197 [2021-10-28 23:10:14,334 INFO L226 Difference]: Without dead ends: 193 [2021-10-28 23:10:14,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-28 23:10:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 165. [2021-10-28 23:10:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 88 states have (on average 1.8977272727272727) internal successors, (167), 161 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2021-10-28 23:10:14,405 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 7 [2021-10-28 23:10:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:14,405 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2021-10-28 23:10:14,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2021-10-28 23:10:14,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:10:14,406 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:14,406 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:14,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:10:14,407 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1463572286, now seen corresponding path program 1 times [2021-10-28 23:10:14,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:14,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943524009] [2021-10-28 23:10:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:14,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:14,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:14,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943524009] [2021-10-28 23:10:14,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943524009] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:14,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:14,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:14,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260397134] [2021-10-28 23:10:14,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:14,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:14,523 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:14,822 INFO L93 Difference]: Finished difference Result 162 states and 167 transitions. [2021-10-28 23:10:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 23:10:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:14,826 INFO L225 Difference]: With dead ends: 162 [2021-10-28 23:10:14,826 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 23:10:14,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 23:10:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-10-28 23:10:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 88 states have (on average 1.8636363636363635) internal successors, (164), 158 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 167 transitions. [2021-10-28 23:10:14,836 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 167 transitions. Word has length 7 [2021-10-28 23:10:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:14,837 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 167 transitions. [2021-10-28 23:10:14,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 167 transitions. [2021-10-28 23:10:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:10:14,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:14,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:14,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:10:14,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:14,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash 646742145, now seen corresponding path program 1 times [2021-10-28 23:10:14,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:14,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663723060] [2021-10-28 23:10:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:14,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:14,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:14,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663723060] [2021-10-28 23:10:14,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663723060] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:14,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:14,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:14,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832036143] [2021-10-28 23:10:14,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:14,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:14,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:14,937 INFO L87 Difference]: Start difference. First operand 162 states and 167 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:15,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:15,200 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2021-10-28 23:10:15,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:15,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:10:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:15,203 INFO L225 Difference]: With dead ends: 161 [2021-10-28 23:10:15,203 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 23:10:15,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 23:10:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2021-10-28 23:10:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 90 states have (on average 1.788888888888889) internal successors, (161), 153 states have internal predecessors, (161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 164 transitions. [2021-10-28 23:10:15,224 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 164 transitions. Word has length 11 [2021-10-28 23:10:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:15,224 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 164 transitions. [2021-10-28 23:10:15,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 164 transitions. [2021-10-28 23:10:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:10:15,225 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:15,225 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:15,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:10:15,226 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:15,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash 646742146, now seen corresponding path program 1 times [2021-10-28 23:10:15,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:15,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276511219] [2021-10-28 23:10:15,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:15,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:15,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:15,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276511219] [2021-10-28 23:10:15,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276511219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:15,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:15,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:15,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475171084] [2021-10-28 23:10:15,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:15,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:15,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:15,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:15,327 INFO L87 Difference]: Start difference. First operand 157 states and 164 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:15,583 INFO L93 Difference]: Finished difference Result 174 states and 180 transitions. [2021-10-28 23:10:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:15,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:10:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:15,585 INFO L225 Difference]: With dead ends: 174 [2021-10-28 23:10:15,585 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 23:10:15,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 23:10:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2021-10-28 23:10:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 97 states have (on average 1.7010309278350515) internal successors, (165), 157 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 168 transitions. [2021-10-28 23:10:15,603 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 168 transitions. Word has length 11 [2021-10-28 23:10:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:15,603 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 168 transitions. [2021-10-28 23:10:15,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 168 transitions. [2021-10-28 23:10:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:10:15,604 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:15,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:15,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:10:15,605 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash -955929302, now seen corresponding path program 1 times [2021-10-28 23:10:15,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:15,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186283616] [2021-10-28 23:10:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:15,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:15,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:15,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186283616] [2021-10-28 23:10:15,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186283616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:15,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:15,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:10:15,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036031052] [2021-10-28 23:10:15,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:15,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:15,766 INFO L87 Difference]: Start difference. First operand 161 states and 168 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:16,039 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2021-10-28 23:10:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:16,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:10:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:16,041 INFO L225 Difference]: With dead ends: 162 [2021-10-28 23:10:16,041 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 23:10:16,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:16,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 23:10:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 148. [2021-10-28 23:10:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 99 states have (on average 1.5555555555555556) internal successors, (154), 144 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2021-10-28 23:10:16,050 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 17 [2021-10-28 23:10:16,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:16,050 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2021-10-28 23:10:16,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2021-10-28 23:10:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:10:16,051 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:16,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:16,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:10:16,052 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash -955929301, now seen corresponding path program 1 times [2021-10-28 23:10:16,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:16,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477534677] [2021-10-28 23:10:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:16,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:16,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:16,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477534677] [2021-10-28 23:10:16,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477534677] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:16,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:16,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:10:16,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058068558] [2021-10-28 23:10:16,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:16,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:16,198 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:16,499 INFO L93 Difference]: Finished difference Result 187 states and 197 transitions. [2021-10-28 23:10:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:16,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:10:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:16,501 INFO L225 Difference]: With dead ends: 187 [2021-10-28 23:10:16,501 INFO L226 Difference]: Without dead ends: 187 [2021-10-28 23:10:16,501 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-28 23:10:16,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 158. [2021-10-28 23:10:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 110 states have (on average 1.518181818181818) internal successors, (167), 154 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2021-10-28 23:10:16,506 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 17 [2021-10-28 23:10:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:16,506 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2021-10-28 23:10:16,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2021-10-28 23:10:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:10:16,507 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:16,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:16,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:10:16,508 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr45ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash 474995261, now seen corresponding path program 1 times [2021-10-28 23:10:16,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:16,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832406675] [2021-10-28 23:10:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:16,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:16,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:16,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832406675] [2021-10-28 23:10:16,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832406675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:16,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:16,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:10:16,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3925119] [2021-10-28 23:10:16,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:10:16,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:16,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:10:16,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:16,571 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:16,871 INFO L93 Difference]: Finished difference Result 201 states and 210 transitions. [2021-10-28 23:10:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:10:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:16,875 INFO L225 Difference]: With dead ends: 201 [2021-10-28 23:10:16,875 INFO L226 Difference]: Without dead ends: 201 [2021-10-28 23:10:16,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-28 23:10:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 156. [2021-10-28 23:10:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 152 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-10-28 23:10:16,885 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 19 [2021-10-28 23:10:16,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:16,885 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-10-28 23:10:16,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-10-28 23:10:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:10:16,887 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:16,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:16,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:10:16,888 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1838316838, now seen corresponding path program 1 times [2021-10-28 23:10:16,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:16,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343637589] [2021-10-28 23:10:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:16,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:16,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:16,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343637589] [2021-10-28 23:10:16,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343637589] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:16,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:16,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:10:16,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680176088] [2021-10-28 23:10:16,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:10:16,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:10:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:16,970 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:17,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:17,210 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2021-10-28 23:10:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:10:17,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 23:10:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:17,212 INFO L225 Difference]: With dead ends: 155 [2021-10-28 23:10:17,212 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 23:10:17,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 23:10:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-10-28 23:10:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 151 states have internal predecessors, (161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 164 transitions. [2021-10-28 23:10:17,217 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 164 transitions. Word has length 20 [2021-10-28 23:10:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:17,217 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 164 transitions. [2021-10-28 23:10:17,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 164 transitions. [2021-10-28 23:10:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:10:17,218 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:17,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:17,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:10:17,218 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1838316839, now seen corresponding path program 1 times [2021-10-28 23:10:17,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:17,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249074903] [2021-10-28 23:10:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:17,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:17,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:17,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249074903] [2021-10-28 23:10:17,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249074903] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:17,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:17,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:10:17,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602991435] [2021-10-28 23:10:17,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:10:17,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:10:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:17,300 INFO L87 Difference]: Start difference. First operand 155 states and 164 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:17,565 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2021-10-28 23:10:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:10:17,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 23:10:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:17,566 INFO L225 Difference]: With dead ends: 154 [2021-10-28 23:10:17,567 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 23:10:17,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 23:10:17,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-10-28 23:10:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 109 states have (on average 1.4587155963302751) internal successors, (159), 150 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2021-10-28 23:10:17,571 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 20 [2021-10-28 23:10:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:17,572 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2021-10-28 23:10:17,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2021-10-28 23:10:17,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:10:17,573 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:17,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:17,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:10:17,573 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:17,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1329344305, now seen corresponding path program 1 times [2021-10-28 23:10:17,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:17,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109978127] [2021-10-28 23:10:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:17,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:17,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:17,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109978127] [2021-10-28 23:10:17,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109978127] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:17,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:17,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:10:17,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724289353] [2021-10-28 23:10:17,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:17,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:17,765 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:18,163 INFO L93 Difference]: Finished difference Result 208 states and 220 transitions. [2021-10-28 23:10:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:10:18,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-28 23:10:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:18,165 INFO L225 Difference]: With dead ends: 208 [2021-10-28 23:10:18,165 INFO L226 Difference]: Without dead ends: 208 [2021-10-28 23:10:18,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:10:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-28 23:10:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 159. [2021-10-28 23:10:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 114 states have (on average 1.4385964912280702) internal successors, (164), 155 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 167 transitions. [2021-10-28 23:10:18,170 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 167 transitions. Word has length 22 [2021-10-28 23:10:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:18,171 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 167 transitions. [2021-10-28 23:10:18,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 167 transitions. [2021-10-28 23:10:18,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:10:18,172 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:18,172 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:18,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:10:18,172 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:18,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:18,173 INFO L85 PathProgramCache]: Analyzing trace with hash 942465896, now seen corresponding path program 1 times [2021-10-28 23:10:18,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:18,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260296675] [2021-10-28 23:10:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:18,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:18,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:18,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260296675] [2021-10-28 23:10:18,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260296675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:18,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:18,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:10:18,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568565649] [2021-10-28 23:10:18,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:10:18,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:18,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:10:18,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:18,320 INFO L87 Difference]: Start difference. First operand 159 states and 167 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:18,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:18,740 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2021-10-28 23:10:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:10:18,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:10:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:18,742 INFO L225 Difference]: With dead ends: 158 [2021-10-28 23:10:18,742 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:10:18,742 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:10:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:10:18,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-28 23:10:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 154 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2021-10-28 23:10:18,747 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 24 [2021-10-28 23:10:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:18,747 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2021-10-28 23:10:18,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2021-10-28 23:10:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:10:18,748 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:18,748 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:18,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:10:18,749 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash 942465897, now seen corresponding path program 1 times [2021-10-28 23:10:18,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:18,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776703774] [2021-10-28 23:10:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:18,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:18,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:18,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776703774] [2021-10-28 23:10:18,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776703774] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:18,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:18,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:10:18,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354798088] [2021-10-28 23:10:18,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:10:18,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:10:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:18,968 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:19,686 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2021-10-28 23:10:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:10:19,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-10-28 23:10:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:19,688 INFO L225 Difference]: With dead ends: 176 [2021-10-28 23:10:19,688 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 23:10:19,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:10:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 23:10:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 162. [2021-10-28 23:10:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 124 states have (on average 1.3790322580645162) internal successors, (171), 158 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 174 transitions. [2021-10-28 23:10:19,694 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 174 transitions. Word has length 24 [2021-10-28 23:10:19,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:19,694 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 174 transitions. [2021-10-28 23:10:19,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 174 transitions. [2021-10-28 23:10:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:10:19,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:19,696 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:19,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:10:19,696 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash 470516267, now seen corresponding path program 1 times [2021-10-28 23:10:19,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:19,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077837463] [2021-10-28 23:10:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:19,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:19,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:19,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077837463] [2021-10-28 23:10:19,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077837463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:19,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758929533] [2021-10-28 23:10:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:19,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:19,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:19,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:10:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:19,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:10:19,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:20,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:20,149 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:10:20,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-28 23:10:20,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:10:20,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:20,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 23:10:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:20,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:20,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:20,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-28 23:10:20,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:10:20,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2021-10-28 23:10:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:20,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758929533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:20,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:20,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-10-28 23:10:20,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596581898] [2021-10-28 23:10:20,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:10:20,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:10:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:10:20,790 INFO L87 Difference]: Start difference. First operand 162 states and 174 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:22,054 INFO L93 Difference]: Finished difference Result 226 states and 242 transitions. [2021-10-28 23:10:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:10:22,055 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 23:10:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:22,057 INFO L225 Difference]: With dead ends: 226 [2021-10-28 23:10:22,057 INFO L226 Difference]: Without dead ends: 226 [2021-10-28 23:10:22,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2021-10-28 23:10:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-28 23:10:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 169. [2021-10-28 23:10:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 131 states have (on average 1.366412213740458) internal successors, (179), 165 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2021-10-28 23:10:22,071 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 182 transitions. Word has length 29 [2021-10-28 23:10:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:22,071 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-28 23:10:22,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 182 transitions. [2021-10-28 23:10:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 23:10:22,075 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:22,076 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:22,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:22,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 23:10:22,277 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr53ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash 428498014, now seen corresponding path program 1 times [2021-10-28 23:10:22,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:22,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090524415] [2021-10-28 23:10:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:22,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:22,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:22,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090524415] [2021-10-28 23:10:22,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090524415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:22,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:22,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:10:22,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628499618] [2021-10-28 23:10:22,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:10:22,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:10:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:22,368 INFO L87 Difference]: Start difference. First operand 169 states and 182 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:22,613 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2021-10-28 23:10:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:22,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-10-28 23:10:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:22,615 INFO L225 Difference]: With dead ends: 173 [2021-10-28 23:10:22,615 INFO L226 Difference]: Without dead ends: 173 [2021-10-28 23:10:22,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-28 23:10:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2021-10-28 23:10:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 130 states have (on average 1.353846153846154) internal successors, (176), 164 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 179 transitions. [2021-10-28 23:10:22,620 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 179 transitions. Word has length 29 [2021-10-28 23:10:22,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:22,620 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 179 transitions. [2021-10-28 23:10:22,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 179 transitions. [2021-10-28 23:10:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:10:22,622 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:22,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:22,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:10:22,622 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr40ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1019922444, now seen corresponding path program 1 times [2021-10-28 23:10:22,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:22,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348040603] [2021-10-28 23:10:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:22,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:22,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:22,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348040603] [2021-10-28 23:10:22,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348040603] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:22,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:22,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:10:22,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779325311] [2021-10-28 23:10:22,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:22,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:22,682 INFO L87 Difference]: Start difference. First operand 168 states and 179 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:22,907 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2021-10-28 23:10:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:22,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 23:10:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:22,909 INFO L225 Difference]: With dead ends: 170 [2021-10-28 23:10:22,909 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 23:10:22,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:22,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 23:10:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2021-10-28 23:10:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 162 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2021-10-28 23:10:22,920 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 30 [2021-10-28 23:10:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:22,920 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2021-10-28 23:10:22,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2021-10-28 23:10:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:10:22,924 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:22,924 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:22,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:10:22,925 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr31REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1154646554, now seen corresponding path program 1 times [2021-10-28 23:10:22,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:22,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705621623] [2021-10-28 23:10:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:22,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:23,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:23,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705621623] [2021-10-28 23:10:23,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705621623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:23,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:23,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:10:23,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63534798] [2021-10-28 23:10:23,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:10:23,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:10:23,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:23,041 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:23,286 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2021-10-28 23:10:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:10:23,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:10:23,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:23,288 INFO L225 Difference]: With dead ends: 165 [2021-10-28 23:10:23,288 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 23:10:23,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:23,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 23:10:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-10-28 23:10:23,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.3333333333333333) internal successors, (172), 161 states have internal predecessors, (172), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2021-10-28 23:10:23,292 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 32 [2021-10-28 23:10:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2021-10-28 23:10:23,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2021-10-28 23:10:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:10:23,294 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:23,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:23,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:10:23,294 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr30REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1154646553, now seen corresponding path program 1 times [2021-10-28 23:10:23,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:23,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200457943] [2021-10-28 23:10:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:23,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:23,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:23,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200457943] [2021-10-28 23:10:23,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200457943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:23,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:23,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:10:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742394410] [2021-10-28 23:10:23,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:10:23,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:10:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:23,363 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:23,583 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2021-10-28 23:10:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:10:23,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-10-28 23:10:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:23,585 INFO L225 Difference]: With dead ends: 164 [2021-10-28 23:10:23,585 INFO L226 Difference]: Without dead ends: 164 [2021-10-28 23:10:23,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-28 23:10:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-28 23:10:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 160 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2021-10-28 23:10:23,590 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 32 [2021-10-28 23:10:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:23,590 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2021-10-28 23:10:23,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2021-10-28 23:10:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:10:23,591 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:23,591 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:23,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 23:10:23,592 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1914894277, now seen corresponding path program 1 times [2021-10-28 23:10:23,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:23,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381507870] [2021-10-28 23:10:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:23,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:23,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:23,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381507870] [2021-10-28 23:10:23,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381507870] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:23,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:23,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:10:23,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672774778] [2021-10-28 23:10:23,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:23,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:23,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:23,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:23,663 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:23,868 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2021-10-28 23:10:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-10-28 23:10:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:23,870 INFO L225 Difference]: With dead ends: 163 [2021-10-28 23:10:23,870 INFO L226 Difference]: Without dead ends: 163 [2021-10-28 23:10:23,870 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:10:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-28 23:10:23,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-10-28 23:10:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.3125) internal successors, (168), 158 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2021-10-28 23:10:23,875 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2021-10-28 23:10:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:23,875 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2021-10-28 23:10:23,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2021-10-28 23:10:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 23:10:23,876 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:23,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:23,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 23:10:23,876 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr74ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:23,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:23,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1259434580, now seen corresponding path program 1 times [2021-10-28 23:10:23,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:23,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43937364] [2021-10-28 23:10:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:23,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:10:23,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:23,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43937364] [2021-10-28 23:10:23,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43937364] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:23,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:23,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:10:23,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723447787] [2021-10-28 23:10:23,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:23,929 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:24,097 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2021-10-28 23:10:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-10-28 23:10:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:24,098 INFO L225 Difference]: With dead ends: 164 [2021-10-28 23:10:24,098 INFO L226 Difference]: Without dead ends: 164 [2021-10-28 23:10:24,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:24,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-28 23:10:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-10-28 23:10:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 130 states have (on average 1.3076923076923077) internal successors, (170), 160 states have internal predecessors, (170), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2021-10-28 23:10:24,103 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 35 [2021-10-28 23:10:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:24,104 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2021-10-28 23:10:24,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2021-10-28 23:10:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 23:10:24,105 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:24,105 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:24,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 23:10:24,105 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1967527785, now seen corresponding path program 1 times [2021-10-28 23:10:24,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:24,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895910693] [2021-10-28 23:10:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:24,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:24,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:24,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895910693] [2021-10-28 23:10:24,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895910693] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:24,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:24,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 23:10:24,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209117288] [2021-10-28 23:10:24,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:10:24,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:10:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:10:24,274 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:24,894 INFO L93 Difference]: Finished difference Result 202 states and 211 transitions. [2021-10-28 23:10:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 23:10:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-10-28 23:10:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:24,896 INFO L225 Difference]: With dead ends: 202 [2021-10-28 23:10:24,896 INFO L226 Difference]: Without dead ends: 202 [2021-10-28 23:10:24,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2021-10-28 23:10:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-28 23:10:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 164. [2021-10-28 23:10:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 130 states have (on average 1.3) internal successors, (169), 160 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2021-10-28 23:10:24,902 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 35 [2021-10-28 23:10:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:24,902 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2021-10-28 23:10:24,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2021-10-28 23:10:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 23:10:24,903 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:24,903 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:24,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:10:24,904 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:24,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1254504805, now seen corresponding path program 1 times [2021-10-28 23:10:24,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:24,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428948184] [2021-10-28 23:10:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:24,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:25,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:25,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428948184] [2021-10-28 23:10:25,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428948184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:25,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:25,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:10:25,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75441595] [2021-10-28 23:10:25,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:25,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:25,019 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:25,398 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2021-10-28 23:10:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:10:25,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-10-28 23:10:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:25,400 INFO L225 Difference]: With dead ends: 164 [2021-10-28 23:10:25,400 INFO L226 Difference]: Without dead ends: 164 [2021-10-28 23:10:25,400 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:10:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-28 23:10:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2021-10-28 23:10:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 159 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2021-10-28 23:10:25,405 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 36 [2021-10-28 23:10:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2021-10-28 23:10:25,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2021-10-28 23:10:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 23:10:25,406 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:25,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:25,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 23:10:25,407 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1254504804, now seen corresponding path program 1 times [2021-10-28 23:10:25,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:25,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595214489] [2021-10-28 23:10:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:25,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:25,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:25,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595214489] [2021-10-28 23:10:25,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595214489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:25,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:25,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:10:25,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995089447] [2021-10-28 23:10:25,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:10:25,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:10:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:25,559 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:26,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:26,064 INFO L93 Difference]: Finished difference Result 159 states and 167 transitions. [2021-10-28 23:10:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:10:26,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-10-28 23:10:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:26,068 INFO L225 Difference]: With dead ends: 159 [2021-10-28 23:10:26,068 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 23:10:26,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:10:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 23:10:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2021-10-28 23:10:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 121 states have (on average 1.2479338842975207) internal successors, (151), 143 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2021-10-28 23:10:26,072 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 36 [2021-10-28 23:10:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:26,072 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2021-10-28 23:10:26,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2021-10-28 23:10:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 23:10:26,073 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:26,073 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:26,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 23:10:26,074 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr66REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2131891079, now seen corresponding path program 1 times [2021-10-28 23:10:26,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:26,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658719851] [2021-10-28 23:10:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:26,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:26,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:26,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658719851] [2021-10-28 23:10:26,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658719851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:26,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818114734] [2021-10-28 23:10:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:26,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:26,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:26,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:10:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:10:26,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:26,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:10:26,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 23:10:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:10:26,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818114734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:26,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:10:26,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2021-10-28 23:10:26,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804442967] [2021-10-28 23:10:26,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:26,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:10:26,448 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:26,517 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2021-10-28 23:10:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-10-28 23:10:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:26,519 INFO L225 Difference]: With dead ends: 156 [2021-10-28 23:10:26,519 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:10:26,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:10:26,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2021-10-28 23:10:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 146 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 157 transitions. [2021-10-28 23:10:26,524 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 157 transitions. Word has length 37 [2021-10-28 23:10:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:26,524 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 157 transitions. [2021-10-28 23:10:26,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 157 transitions. [2021-10-28 23:10:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:10:26,525 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:26,525 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:26,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:26,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:26,740 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr59REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1019054532, now seen corresponding path program 1 times [2021-10-28 23:10:26,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:26,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455229265] [2021-10-28 23:10:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:26,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:10:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:26,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:10:26,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455229265] [2021-10-28 23:10:26,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455229265] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:26,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98415057] [2021-10-28 23:10:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:26,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:26,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:10:26,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:10:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:27,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:10:27,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:27,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:10:27,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:10:27,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-10-28 23:10:27,175 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-28 23:10:27,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-10-28 23:10:27,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-10-28 23:10:27,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:27,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:27,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 23:10:27,251 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-28 23:10:27,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-10-28 23:10:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:27,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:10:27,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-28 23:10:27,527 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 23:10:27,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-10-28 23:10:27,536 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 23:10:27,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-10-28 23:10:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:10:27,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98415057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:10:27,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:10:27,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-28 23:10:27,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607541797] [2021-10-28 23:10:27,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:10:27,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:10:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:10:27,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:27,573 INFO L87 Difference]: Start difference. First operand 150 states and 157 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:27,952 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2021-10-28 23:10:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:10:27,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-10-28 23:10:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:27,953 INFO L225 Difference]: With dead ends: 160 [2021-10-28 23:10:27,953 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:10:27,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:10:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:10:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-10-28 23:10:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 152 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 163 transitions. [2021-10-28 23:10:27,958 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 163 transitions. Word has length 38 [2021-10-28 23:10:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:27,959 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 163 transitions. [2021-10-28 23:10:27,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 163 transitions. [2021-10-28 23:10:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 23:10:27,960 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:27,960 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:28,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:28,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:10:28,179 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr76ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:28,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1525919079, now seen corresponding path program 1 times [2021-10-28 23:10:28,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:10:28,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315503992] [2021-10-28 23:10:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:28,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:10:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:10:28,196 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:10:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:10:28,250 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:10:28,251 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:10:28,251 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr76ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,253 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:10:28,253 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:10:28,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:10:28,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:10:28,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:10:28,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:10:28,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:10:28,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:10:28,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:10:28,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:10:28,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:10:28,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:10:28,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:10:28,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:10:28,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:10:28,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:10:28,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:10:28,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:10:28,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:10:28,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:10:28,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:10:28,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:10:28,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:10:28,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:10:28,257 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:10:28,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 23:10:28,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 23:10:28,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:10:28,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:10:28,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:10:28,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:10:28,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 23:10:28,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 23:10:28,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 23:10:28,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 23:10:28,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 23:10:28,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 23:10:28,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 23:10:28,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 23:10:28,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 23:10:28,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 23:10:28,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 23:10:28,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 23:10:28,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 23:10:28,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 23:10:28,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 23:10:28,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-10-28 23:10:28,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-10-28 23:10:28,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 23:10:28,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 23:10:28,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:10:28,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-10-28 23:10:28,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-10-28 23:10:28,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 23:10:28,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 23:10:28,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61REQUIRES_VIOLATION [2021-10-28 23:10:28,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62REQUIRES_VIOLATION [2021-10-28 23:10:28,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr66REQUIRES_VIOLATION [2021-10-28 23:10:28,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr67REQUIRES_VIOLATION [2021-10-28 23:10:28,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr68ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr69ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr70ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr71REQUIRES_VIOLATION [2021-10-28 23:10:28,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr72REQUIRES_VIOLATION [2021-10-28 23:10:28,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr73ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr74ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr75ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:10:28,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 23:10:28,294 INFO L731 BasicCegarLoop]: Path program 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] [2021-10-28 23:10:28,300 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:10:28,327 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:10:28,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:10:28 BoogieIcfgContainer [2021-10-28 23:10:28,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:10:28,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:10:28,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:10:28,351 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:10:28,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:13" (3/4) ... [2021-10-28 23:10:28,355 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:10:28,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:10:28,356 INFO L168 Benchmark]: Toolchain (without parser) took 16141.42 ms. Allocated memory was 121.6 MB in the beginning and 182.5 MB in the end (delta: 60.8 MB). Free memory was 94.7 MB in the beginning and 146.1 MB in the end (delta: -51.4 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:28,357 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 121.6 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:10:28,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.05 ms. Allocated memory is still 121.6 MB. Free memory was 94.7 MB in the beginning and 88.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:28,358 INFO L168 Benchmark]: Boogie Preprocessor took 63.48 ms. Allocated memory is still 121.6 MB. Free memory was 88.9 MB in the beginning and 86.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:28,358 INFO L168 Benchmark]: RCFGBuilder took 746.86 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 57.1 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:28,359 INFO L168 Benchmark]: TraceAbstraction took 14865.49 ms. Allocated memory was 121.6 MB in the beginning and 182.5 MB in the end (delta: 60.8 MB). Free memory was 56.7 MB in the beginning and 147.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:10:28,359 INFO L168 Benchmark]: Witness Printer took 8.02 ms. Allocated memory is still 182.5 MB. Free memory was 147.1 MB in the beginning and 146.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:10:28,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 121.6 MB. Free memory is still 80.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.05 ms. Allocated memory is still 121.6 MB. Free memory was 94.7 MB in the beginning and 88.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.48 ms. Allocated memory is still 121.6 MB. Free memory was 88.9 MB in the beginning and 86.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 746.86 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 57.1 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14865.49 ms. Allocated memory was 121.6 MB in the beginning and 182.5 MB in the end (delta: 60.8 MB). Free memory was 56.7 MB in the beginning and 147.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. * Witness Printer took 8.02 ms. Allocated memory is still 182.5 MB. Free memory was 147.1 MB in the beginning and 146.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) VAL [null={-1:0}] [L1000] null->prev = ((void*)0) VAL [null={-1:0}] [L1001] null->colour = BLACK VAL [null={-1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null VAL [list={-2:0}, null={-1:0}] [L1005] list->prev = null VAL [list={-2:0}, null={-1:0}] [L1006] list->colour = BLACK VAL [list={-2:0}, null={-1:0}] [L1008] struct TSLL* end = list; VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1042] EXPR end->colour VAL [end={-2:0}, end->colour=1, list={-2:0}, null={-1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={-2:0}, list={-2:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end={-2:0}, end->colour=1, list={-2:0}, null={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={-2:0}, end->next={-1:0}, list={-2:0}, null={-1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1056] COND TRUE null != list VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1058] EXPR list->colour VAL [end={-1:0}, list={-2:0}, list->colour=1, null={-1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-1:0}, list={-2:0}, list->next={-1:0}, null={-1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1068] free(list) VAL [end={-1:0}, list={-2:0}, null={-1:0}] [L1068] free(list) [L1069] list = end VAL [end={-1:0}, list={-1:0}, null={-1:0}] [L1056] COND FALSE !(null != list) VAL [end={-1:0}, list={-1:0}, null={-1:0}] [L1073] return 0; VAL [\result=0, end={-1:0}, list={-1:0}, null={-1:0}] - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 174 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2292 SDtfs, 3018 SDslu, 4261 SDs, 0 SdLazy, 8684 SolverSat, 347 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 365 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=0, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 324 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 678 ConstructedInterpolants, 3 QuantifiedInterpolants, 5275 SizeOfPredicates, 16 NumberOfNonLiveVariables, 572 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 6/13 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 [2021-10-28 23:10:28,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:10:30,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:10:30,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:10:30,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:10:30,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:10:30,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:10:30,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:10:30,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:10:30,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:10:30,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:10:30,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:10:30,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:10:30,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:10:30,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:10:30,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:10:30,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:10:30,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:10:30,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:10:30,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:10:30,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:10:30,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:10:30,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:10:30,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:10:30,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:10:30,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:10:30,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:10:30,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:10:30,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:10:30,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:10:30,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:10:30,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:10:30,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:10:30,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:10:30,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:10:30,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:10:30,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:10:30,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:10:30,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:10:30,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:10:30,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:10:30,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:10:30,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:10:30,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:10:30,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:10:30,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:10:30,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:10:30,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:10:30,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:10:30,974 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:10:30,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:10:30,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:10:30,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:10:30,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:10:30,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:10:30,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:10:30,978 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:10:30,979 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:10:30,979 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:10:30,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:10:30,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:10:30,979 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:10:30,980 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:10:30,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:10:30,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:10:30,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:10:30,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:10:30,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:10:30,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:30,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:10:30,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:10:30,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:10:30,983 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:10:30,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:10:30,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:10:30,983 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-28 23:10:31,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:10:31,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:10:31,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:10:31,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:10:31,384 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:10:31,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 23:10:31,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/86dbd18c9/a6c95c0df7dd43b4a24b90f233fb5a97/FLAGa3cbf0eae [2021-10-28 23:10:32,066 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:10:32,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-28 23:10:32,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/86dbd18c9/a6c95c0df7dd43b4a24b90f233fb5a97/FLAGa3cbf0eae [2021-10-28 23:10:32,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/data/86dbd18c9/a6c95c0df7dd43b4a24b90f233fb5a97 [2021-10-28 23:10:32,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:10:32,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:10:32,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:32,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:10:32,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:10:32,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:32" (1/1) ... [2021-10-28 23:10:32,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fed3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:32, skipping insertion in model container [2021-10-28 23:10:32,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:10:32" (1/1) ... [2021-10-28 23:10:32,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:10:32,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:10:32,887 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 23:10:32,894 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 23:10:32,895 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 23:10:32,898 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 23:10:32,899 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 23:10:32,903 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 23:10:32,905 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 23:10:32,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:32,940 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:10:33,009 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-28 23:10:33,019 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-28 23:10:33,020 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-28 23:10:33,021 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-28 23:10:33,023 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-28 23:10:33,029 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-28 23:10:33,030 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_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-28 23:10:33,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:10:33,078 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:10:33,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33 WrapperNode [2021-10-28 23:10:33,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:10:33,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:10:33,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:10:33,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:10:33,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:10:33,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:10:33,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:10:33,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:10:33,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (1/1) ... [2021-10-28 23:10:33,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:10:33,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:10:33,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:10:33,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:10:33,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:10:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:10:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:10:33,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:10:33,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:10:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:10:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:10:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:10:33,232 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:10:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:10:33,233 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:10:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:10:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:10:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:10:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:10:33,234 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:10:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:10:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:10:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:10:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:10:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:10:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:10:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:10:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:10:33,236 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:10:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:10:33,238 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:10:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:10:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:10:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:10:33,239 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:10:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:10:33,240 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:10:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:10:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:10:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:10:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:10:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:10:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:10:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:10:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:10:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:10:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:10:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:10:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:10:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:10:33,244 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:10:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:10:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:10:33,245 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:10:33,246 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:10:33,247 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:10:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:10:33,248 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:10:33,249 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:10:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:10:33,250 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:10:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:10:33,254 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:10:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:10:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:10:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:10:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:10:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:10:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:10:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:10:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:10:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:10:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:10:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:10:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:10:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:10:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:10:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:10:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:10:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:10:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:10:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:10:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:10:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:10:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:10:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:10:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:10:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:10:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:10:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:10:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:10:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:10:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:10:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:10:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:10:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:10:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:10:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:10:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:10:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:10:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:10:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:10:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:10:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:10:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:10:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:10:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:10:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:10:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:10:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:10:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:10:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:10:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:10:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:10:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:10:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:10:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:10:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:10:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:10:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:10:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:10:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:10:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:10:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:10:34,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:10:34,359 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 23:10:34,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:34 BoogieIcfgContainer [2021-10-28 23:10:34,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:10:34,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:10:34,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:10:34,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:10:34,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:10:32" (1/3) ... [2021-10-28 23:10:34,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a82143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:34, skipping insertion in model container [2021-10-28 23:10:34,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:10:33" (2/3) ... [2021-10-28 23:10:34,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a82143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:10:34, skipping insertion in model container [2021-10-28 23:10:34,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:34" (3/3) ... [2021-10-28 23:10:34,368 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-28 23:10:34,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:10:34,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2021-10-28 23:10:34,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:10:34,422 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:10:34,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2021-10-28 23:10:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 87 states have (on average 2.2298850574712645) internal successors, (194), 164 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:10:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:10:34,447 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:34,448 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:34,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1610416047, now seen corresponding path program 1 times [2021-10-28 23:10:34,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:34,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607479837] [2021-10-28 23:10:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:34,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:34,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:34,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:34,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:10:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:34,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:10:34,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:34,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:34,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:34,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:34,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607479837] [2021-10-28 23:10:34,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607479837] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:34,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:34,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:10:34,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110128233] [2021-10-28 23:10:34,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:34,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:34,759 INFO L87 Difference]: Start difference. First operand has 169 states, 87 states have (on average 2.2298850574712645) internal successors, (194), 164 states have internal predecessors, (194), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:35,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:35,125 INFO L93 Difference]: Finished difference Result 195 states and 202 transitions. [2021-10-28 23:10:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 23:10:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:35,139 INFO L225 Difference]: With dead ends: 195 [2021-10-28 23:10:35,139 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 23:10:35,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 23:10:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 163. [2021-10-28 23:10:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 86 states have (on average 1.9186046511627908) internal successors, (165), 159 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 168 transitions. [2021-10-28 23:10:35,204 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 168 transitions. Word has length 7 [2021-10-28 23:10:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:35,205 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 168 transitions. [2021-10-28 23:10:35,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 168 transitions. [2021-10-28 23:10:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:10:35,206 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:35,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:35,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:35,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:35,413 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:35,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:35,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1610416046, now seen corresponding path program 1 times [2021-10-28 23:10:35,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:35,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437418888] [2021-10-28 23:10:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:35,416 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:35,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:35,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:35,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:10:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:35,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:10:35,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:35,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:35,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:35,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:35,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437418888] [2021-10-28 23:10:35,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437418888] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:35,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:35,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 23:10:35,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459189186] [2021-10-28 23:10:35,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:35,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:35,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:35,703 INFO L87 Difference]: Start difference. First operand 163 states and 168 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:36,061 INFO L93 Difference]: Finished difference Result 160 states and 165 transitions. [2021-10-28 23:10:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:36,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 23:10:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:36,064 INFO L225 Difference]: With dead ends: 160 [2021-10-28 23:10:36,064 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:10:36,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:10:36,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-28 23:10:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 86 states have (on average 1.8837209302325582) internal successors, (162), 156 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 165 transitions. [2021-10-28 23:10:36,076 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 165 transitions. Word has length 7 [2021-10-28 23:10:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:36,077 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 165 transitions. [2021-10-28 23:10:36,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 165 transitions. [2021-10-28 23:10:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:10:36,078 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:36,078 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:36,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:36,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:36,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash -352660203, now seen corresponding path program 1 times [2021-10-28 23:10:36,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:36,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843248477] [2021-10-28 23:10:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:36,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:36,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:36,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:36,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:10:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:36,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:10:36,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:36,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:36,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:36,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:36,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843248477] [2021-10-28 23:10:36,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843248477] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:36,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:36,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:10:36,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982636690] [2021-10-28 23:10:36,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:10:36,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:10:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:36,536 INFO L87 Difference]: Start difference. First operand 160 states and 165 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:36,811 INFO L93 Difference]: Finished difference Result 159 states and 164 transitions. [2021-10-28 23:10:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:10:36,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:10:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:36,813 INFO L225 Difference]: With dead ends: 159 [2021-10-28 23:10:36,814 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 23:10:36,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:10:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 23:10:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-10-28 23:10:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 1.8068181818181819) internal successors, (159), 151 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2021-10-28 23:10:36,824 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 11 [2021-10-28 23:10:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:36,824 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2021-10-28 23:10:36,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2021-10-28 23:10:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:10:36,825 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:36,826 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:36,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:37,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:37,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:37,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash -352660202, now seen corresponding path program 1 times [2021-10-28 23:10:37,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:37,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598171974] [2021-10-28 23:10:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:37,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:37,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:37,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:37,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:10:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:37,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:10:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:37,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:37,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:37,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:37,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598171974] [2021-10-28 23:10:37,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598171974] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:37,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:37,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 23:10:37,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357316063] [2021-10-28 23:10:37,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:37,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:37,305 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:37,702 INFO L93 Difference]: Finished difference Result 172 states and 178 transitions. [2021-10-28 23:10:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:10:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:10:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:37,705 INFO L225 Difference]: With dead ends: 172 [2021-10-28 23:10:37,705 INFO L226 Difference]: Without dead ends: 172 [2021-10-28 23:10:37,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-28 23:10:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 159. [2021-10-28 23:10:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 155 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2021-10-28 23:10:37,714 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 11 [2021-10-28 23:10:37,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:37,715 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2021-10-28 23:10:37,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2021-10-28 23:10:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:10:37,716 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:37,716 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:37,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 23:10:37,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:37,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr12REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2117333470, now seen corresponding path program 1 times [2021-10-28 23:10:37,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:37,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606845726] [2021-10-28 23:10:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:37,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:37,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:37,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:37,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:10:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:38,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:10:38,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:38,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:38,206 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 23:10:38,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-10-28 23:10:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:38,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:38,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:38,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606845726] [2021-10-28 23:10:38,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606845726] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:38,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:38,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:10:38,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495538909] [2021-10-28 23:10:38,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:10:38,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:10:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:10:38,326 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:38,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:38,756 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-10-28 23:10:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:38,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 23:10:38,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:38,758 INFO L225 Difference]: With dead ends: 160 [2021-10-28 23:10:38,758 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:10:38,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:10:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2021-10-28 23:10:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 97 states have (on average 1.5670103092783505) internal successors, (152), 142 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2021-10-28 23:10:38,765 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 16 [2021-10-28 23:10:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:38,766 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2021-10-28 23:10:38,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2021-10-28 23:10:38,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:10:38,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:38,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:38,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:38,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:38,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:38,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:38,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2117333471, now seen corresponding path program 1 times [2021-10-28 23:10:38,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:38,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650053154] [2021-10-28 23:10:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:38,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:38,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:38,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:38,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:10:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:39,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:10:39,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:39,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:39,274 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:10:39,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-28 23:10:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:39,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:39,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:39,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650053154] [2021-10-28 23:10:39,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650053154] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:39,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:39,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-10-28 23:10:39,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986137451] [2021-10-28 23:10:39,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:10:39,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:10:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:39,645 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:40,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:40,915 INFO L93 Difference]: Finished difference Result 193 states and 204 transitions. [2021-10-28 23:10:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:10:40,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-28 23:10:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:40,917 INFO L225 Difference]: With dead ends: 193 [2021-10-28 23:10:40,917 INFO L226 Difference]: Without dead ends: 193 [2021-10-28 23:10:40,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:10:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-28 23:10:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 145. [2021-10-28 23:10:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 102 states have (on average 1.4901960784313726) internal successors, (152), 141 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-10-28 23:10:40,924 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 16 [2021-10-28 23:10:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:40,925 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-10-28 23:10:40,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-10-28 23:10:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:10:40,926 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:40,926 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:40,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:41,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:41,138 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr45ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1056980816, now seen corresponding path program 1 times [2021-10-28 23:10:41,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:41,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111169026] [2021-10-28 23:10:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:41,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:41,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:41,140 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:41,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:10:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:41,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:10:41,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:41,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:41,363 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:10:41,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-28 23:10:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:41,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:41,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:41,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111169026] [2021-10-28 23:10:41,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111169026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:41,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:41,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 23:10:41,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091379189] [2021-10-28 23:10:41,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:41,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:41,490 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:41,919 INFO L93 Difference]: Finished difference Result 193 states and 202 transitions. [2021-10-28 23:10:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:10:41,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-28 23:10:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:41,922 INFO L225 Difference]: With dead ends: 193 [2021-10-28 23:10:41,922 INFO L226 Difference]: Without dead ends: 193 [2021-10-28 23:10:41,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-10-28 23:10:41,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 143. [2021-10-28 23:10:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 101 states have (on average 1.4653465346534653) internal successors, (148), 139 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2021-10-28 23:10:41,928 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 18 [2021-10-28 23:10:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:41,929 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2021-10-28 23:10:41,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:41,929 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2021-10-28 23:10:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:10:41,930 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:41,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:41,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:42,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:42,142 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:42,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1591729511, now seen corresponding path program 1 times [2021-10-28 23:10:42,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:42,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57299204] [2021-10-28 23:10:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:42,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:42,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:42,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:42,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:10:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:42,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:10:42,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:42,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:42,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-28 23:10:42,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-10-28 23:10:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:42,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:42,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:42,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57299204] [2021-10-28 23:10:42,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57299204] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:42,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:42,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:10:42,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708318262] [2021-10-28 23:10:42,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:10:42,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:10:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:10:42,465 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:42,886 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-10-28 23:10:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:10:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:10:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:42,888 INFO L225 Difference]: With dead ends: 142 [2021-10-28 23:10:42,888 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 23:10:42,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:10:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 23:10:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-10-28 23:10:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 138 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2021-10-28 23:10:42,893 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 19 [2021-10-28 23:10:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:42,893 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2021-10-28 23:10:42,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2021-10-28 23:10:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:10:42,894 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:42,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:42,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:43,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:43,100 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr17REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1591729512, now seen corresponding path program 1 times [2021-10-28 23:10:43,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:43,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372977032] [2021-10-28 23:10:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:43,101 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:43,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:43,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:43,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:10:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:43,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:10:43,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:43,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:43,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:10:43,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 23:10:43,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-28 23:10:43,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-28 23:10:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:43,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:43,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:43,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372977032] [2021-10-28 23:10:43,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372977032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:43,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:43,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 23:10:43,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580600619] [2021-10-28 23:10:43,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:10:43,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:43,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:10:43,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:43,622 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:44,603 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2021-10-28 23:10:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:10:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:10:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:44,605 INFO L225 Difference]: With dead ends: 141 [2021-10-28 23:10:44,605 INFO L226 Difference]: Without dead ends: 141 [2021-10-28 23:10:44,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-28 23:10:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-10-28 23:10:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 137 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2021-10-28 23:10:44,610 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 19 [2021-10-28 23:10:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:44,610 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2021-10-28 23:10:44,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2021-10-28 23:10:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:10:44,611 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:44,611 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:44,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:44,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:44,820 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr48ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2106147056, now seen corresponding path program 1 times [2021-10-28 23:10:44,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:44,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190690293] [2021-10-28 23:10:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:44,821 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:44,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:44,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:44,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:10:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:45,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:10:45,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:45,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:10:45,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 23:10:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:45,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:45,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:45,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190690293] [2021-10-28 23:10:45,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190690293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:45,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:45,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-10-28 23:10:45,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011678853] [2021-10-28 23:10:45,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:10:45,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:10:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:10:45,306 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:45,841 INFO L93 Difference]: Finished difference Result 198 states and 210 transitions. [2021-10-28 23:10:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:10:45,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-28 23:10:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:45,843 INFO L225 Difference]: With dead ends: 198 [2021-10-28 23:10:45,843 INFO L226 Difference]: Without dead ends: 198 [2021-10-28 23:10:45,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:10:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-28 23:10:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 146. [2021-10-28 23:10:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 142 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2021-10-28 23:10:45,848 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 21 [2021-10-28 23:10:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:45,849 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2021-10-28 23:10:45,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2021-10-28 23:10:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:10:45,850 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:45,850 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:45,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:46,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:46,059 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 124262505, now seen corresponding path program 1 times [2021-10-28 23:10:46,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:46,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510727564] [2021-10-28 23:10:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:46,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:46,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:46,062 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:46,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 23:10:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:46,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:10:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:46,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:46,395 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 23:10:46,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-10-28 23:10:46,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-28 23:10:46,651 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:10:46,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 33 [2021-10-28 23:10:46,770 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:10:46,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 43 [2021-10-28 23:10:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:46,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:10:48,332 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))))))) (_ bv1 1)))) is different from false [2021-10-28 23:10:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:51,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:10:51,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510727564] [2021-10-28 23:10:51,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510727564] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:10:51,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:10:51,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-28 23:10:51,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822755012] [2021-10-28 23:10:51,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:10:51,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:10:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:10:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=118, Unknown=1, NotChecked=22, Total=182 [2021-10-28 23:10:51,145 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:10:52,752 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2021-10-28 23:10:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:10:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 23:10:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:10:52,754 INFO L225 Difference]: With dead ends: 176 [2021-10-28 23:10:52,754 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 23:10:52,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=132, Invalid=333, Unknown=1, NotChecked=40, Total=506 [2021-10-28 23:10:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 23:10:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 145. [2021-10-28 23:10:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 106 states have (on average 1.4150943396226414) internal successors, (150), 141 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2021-10-28 23:10:52,764 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 23 [2021-10-28 23:10:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:10:52,764 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2021-10-28 23:10:52,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:10:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2021-10-28 23:10:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:10:52,765 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:10:52,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:10:52,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:10:52,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:10:52,966 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:10:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:10:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash 124262506, now seen corresponding path program 1 times [2021-10-28 23:10:52,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:10:52,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034677831] [2021-10-28 23:10:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:10:52,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:10:52,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:10:52,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:10:53,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 23:10:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:10:53,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:10:53,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:10:53,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:53,328 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 23:10:53,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-10-28 23:10:53,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:10:53,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:10:53,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-28 23:10:53,484 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:10:53,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-10-28 23:10:53,503 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 23:10:53,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-10-28 23:10:53,617 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:10:53,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-10-28 23:10:53,624 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:10:53,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-10-28 23:10:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:10:53,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:11:10,666 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-28 23:11:10,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 23:11:10,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 23:11:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:11:10,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:11:10,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034677831] [2021-10-28 23:11:10,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034677831] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:11:10,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:11:10,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-28 23:11:10,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456983084] [2021-10-28 23:11:10,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:11:10,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:11:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:11:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=195, Unknown=2, NotChecked=0, Total=240 [2021-10-28 23:11:10,888 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:11:36,422 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) c_main_~end~0.offset) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (exists ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse2 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse1) .cse2)) (= (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2) c_main_~end~0.offset)))) (= (_ bv12 32) (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_main_~list~0.base)) (_ bv1 1))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-10-28 23:11:48,238 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (and (= (_ bv0 32) c_main_~end~0.offset) (= (_ bv0 32) (select (select |c_#memory_$Pointer$.offset| c_main_~end~0.base) c_main_~end~0.offset)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) .cse0 c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| c_main_~end~0.base)))))) (_ bv1 1))) (exists ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset)) (.cse2 (bvadd (_ bv4 32) |main_#t~mem7.offset|))) (and (= c_main_~end~0.base (select (select |c_#memory_$Pointer$.base| .cse1) .cse2)) (= (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2) c_main_~end~0.offset)))) (= (_ bv12 32) (select |c_#length| c_main_~end~0.base)) (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.offset| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.offset)) c_main_~end~0.base) c_main_~end~0.offset))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (= (select |c_#length| .cse4) (_ bv12 32)) (not (= .cse4 c_main_~end~0.base)))) is different from false [2021-10-28 23:11:56,627 WARN L207 SmtUtils]: Spent 8.14 s on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2021-10-28 23:12:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:03,856 INFO L93 Difference]: Finished difference Result 278 states and 294 transitions. [2021-10-28 23:12:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-28 23:12:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-28 23:12:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:03,858 INFO L225 Difference]: With dead ends: 278 [2021-10-28 23:12:03,858 INFO L226 Difference]: Without dead ends: 278 [2021-10-28 23:12:03,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 65.1s TimeCoverageRelationStatistics Valid=503, Invalid=1749, Unknown=12, NotChecked=186, Total=2450 [2021-10-28 23:12:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-28 23:12:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 140. [2021-10-28 23:12:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 136 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2021-10-28 23:12:03,865 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 23 [2021-10-28 23:12:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:03,866 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2021-10-28 23:12:03,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2021-10-28 23:12:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:12:03,867 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:03,867 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:03,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:04,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:04,080 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr53ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:04,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1488771985, now seen corresponding path program 1 times [2021-10-28 23:12:04,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:04,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250867183] [2021-10-28 23:12:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:04,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:04,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:04,082 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:04,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 23:12:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:04,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:12:04,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:04,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:12:04,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 23:12:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:04,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:04,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:04,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250867183] [2021-10-28 23:12:04,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250867183] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:04,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:04,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2021-10-28 23:12:04,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244417903] [2021-10-28 23:12:04,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:12:04,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:04,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:12:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:12:04,671 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:05,489 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2021-10-28 23:12:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:12:05,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 23:12:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:05,493 INFO L225 Difference]: With dead ends: 191 [2021-10-28 23:12:05,493 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 23:12:05,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:12:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 23:12:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 144. [2021-10-28 23:12:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 110 states have (on average 1.3545454545454545) internal successors, (149), 140 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-10-28 23:12:05,497 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 28 [2021-10-28 23:12:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:05,497 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-10-28 23:12:05,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-10-28 23:12:05,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:12:05,499 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:05,499 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:05,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:05,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:05,711 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr49REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:05,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1530790238, now seen corresponding path program 1 times [2021-10-28 23:12:05,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:05,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748835783] [2021-10-28 23:12:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:05,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:05,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:05,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:05,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 23:12:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:05,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:12:05,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:06,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:12:06,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:12:06,126 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-28 23:12:06,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 23:12:06,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:12:06,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 23:12:06,233 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-28 23:12:06,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2021-10-28 23:12:06,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:12:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:12:06,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:12:06,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-10-28 23:12:06,602 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 23:12:06,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-10-28 23:12:06,609 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 23:12:06,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-10-28 23:12:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:06,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:06,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:06,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748835783] [2021-10-28 23:12:06,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748835783] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:12:06,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:12:06,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-10-28 23:12:06,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490904415] [2021-10-28 23:12:06,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:12:06,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:06,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:12:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:12:06,961 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:08,296 INFO L93 Difference]: Finished difference Result 167 states and 176 transitions. [2021-10-28 23:12:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:12:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 23:12:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:08,297 INFO L225 Difference]: With dead ends: 167 [2021-10-28 23:12:08,298 INFO L226 Difference]: Without dead ends: 167 [2021-10-28 23:12:08,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:12:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-28 23:12:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 147. [2021-10-28 23:12:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 113 states have (on average 1.345132743362832) internal successors, (152), 143 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2021-10-28 23:12:08,308 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 28 [2021-10-28 23:12:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:08,309 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2021-10-28 23:12:08,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:08,309 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2021-10-28 23:12:08,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:12:08,310 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:08,310 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:08,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:08,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:08,528 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr40ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash 66805131, now seen corresponding path program 1 times [2021-10-28 23:12:08,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:08,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637386193] [2021-10-28 23:12:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:08,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:08,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:08,531 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:08,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 23:12:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:08,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:12:08,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:08,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:12:08,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 23:12:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:08,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:08,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:08,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637386193] [2021-10-28 23:12:08,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637386193] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:08,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:08,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:12:08,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270083593] [2021-10-28 23:12:08,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:12:08,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:12:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:12:08,939 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:09,194 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2021-10-28 23:12:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:12:09,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 23:12:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:09,196 INFO L225 Difference]: With dead ends: 149 [2021-10-28 23:12:09,196 INFO L226 Difference]: Without dead ends: 149 [2021-10-28 23:12:09,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:12:09,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-28 23:12:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2021-10-28 23:12:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.3392857142857142) internal successors, (150), 141 states have internal predecessors, (150), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2021-10-28 23:12:09,200 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 28 [2021-10-28 23:12:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:09,201 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2021-10-28 23:12:09,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2021-10-28 23:12:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:12:09,202 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:09,202 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:09,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:09,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:09,414 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr30REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash 36943448, now seen corresponding path program 1 times [2021-10-28 23:12:09,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:09,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970364641] [2021-10-28 23:12:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:09,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:09,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:09,416 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:09,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 23:12:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:09,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:09,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:09,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:12:09,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-28 23:12:09,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-10-28 23:12:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:09,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:09,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:09,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970364641] [2021-10-28 23:12:09,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970364641] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:09,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:09,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:12:09,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608994166] [2021-10-28 23:12:09,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:12:09,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:09,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:12:09,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:12:09,900 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:10,442 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2021-10-28 23:12:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:12:10,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 23:12:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:10,444 INFO L225 Difference]: With dead ends: 144 [2021-10-28 23:12:10,444 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 23:12:10,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:12:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 23:12:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-10-28 23:12:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 140 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2021-10-28 23:12:10,449 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 30 [2021-10-28 23:12:10,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:10,449 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2021-10-28 23:12:10,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2021-10-28 23:12:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:12:10,450 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:10,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:10,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:10,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:10,660 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr31REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:10,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash 36943449, now seen corresponding path program 1 times [2021-10-28 23:12:10,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:10,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196077477] [2021-10-28 23:12:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:10,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:10,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:10,663 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:10,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-28 23:12:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:10,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:12:10,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:11,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:12:11,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:12:11,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 23:12:11,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-28 23:12:11,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-28 23:12:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:11,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:11,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:11,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196077477] [2021-10-28 23:12:11,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196077477] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:11,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:11,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 23:12:11,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314996371] [2021-10-28 23:12:11,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:12:11,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:12:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:12:11,335 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:12,448 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2021-10-28 23:12:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:12:12,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-10-28 23:12:12,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:12,450 INFO L225 Difference]: With dead ends: 143 [2021-10-28 23:12:12,450 INFO L226 Difference]: Without dead ends: 143 [2021-10-28 23:12:12,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:12:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-28 23:12:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-10-28 23:12:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 112 states have (on average 1.3214285714285714) internal successors, (148), 139 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2021-10-28 23:12:12,455 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 30 [2021-10-28 23:12:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:12,455 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2021-10-28 23:12:12,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2021-10-28 23:12:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:12:12,456 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:12,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:12,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:12,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:12,667 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:12,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1625836410, now seen corresponding path program 1 times [2021-10-28 23:12:12,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:12,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148561308] [2021-10-28 23:12:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:12,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:12,669 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:12,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-28 23:12:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:13,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:12:13,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:13,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:12:13,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:12:13,184 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-28 23:12:13,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-10-28 23:12:13,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:12:13,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-10-28 23:12:13,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-28 23:12:13,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-28 23:12:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:13,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:13,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:13,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148561308] [2021-10-28 23:12:13,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148561308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:13,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:13,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-28 23:12:13,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272940974] [2021-10-28 23:12:13,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:12:13,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:13,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:12:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:12:13,417 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:13,905 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-10-28 23:12:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:12:13,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-10-28 23:12:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:13,907 INFO L225 Difference]: With dead ends: 142 [2021-10-28 23:12:13,907 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 23:12:13,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:12:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 23:12:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2021-10-28 23:12:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 137 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2021-10-28 23:12:13,911 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 31 [2021-10-28 23:12:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:13,912 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2021-10-28 23:12:13,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2021-10-28 23:12:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:12:13,913 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:13,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:13,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:14,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:14,126 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash -939174818, now seen corresponding path program 1 times [2021-10-28 23:12:14,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:14,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322155208] [2021-10-28 23:12:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:14,127 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:14,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:14,128 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:14,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-28 23:12:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:14,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:12:14,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:14,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:12:14,580 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 23:12:14,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-28 23:12:14,692 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-28 23:12:14,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-10-28 23:12:14,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-28 23:12:14,791 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:12:14,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-10-28 23:12:14,869 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:12:14,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2021-10-28 23:12:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:14,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:16,481 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem7.offset| (_ BitVec 32))) (not (= c_main_~null~0.base (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem7.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem7.base|) (bvadd (_ bv4 32) |main_#t~mem7.offset|) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))) is different from false [2021-10-28 23:12:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:20,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:20,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322155208] [2021-10-28 23:12:20,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322155208] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:20,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:20,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 14 [2021-10-28 23:12:20,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179130743] [2021-10-28 23:12:20,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:12:20,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:12:20,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2021-10-28 23:12:20,961 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:28,496 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2021-10-28 23:12:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 23:12:28,497 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-10-28 23:12:28,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:28,499 INFO L225 Difference]: With dead ends: 163 [2021-10-28 23:12:28,499 INFO L226 Difference]: Without dead ends: 163 [2021-10-28 23:12:28,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=234, Invalid=639, Unknown=1, NotChecked=56, Total=930 [2021-10-28 23:12:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-28 23:12:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 147. [2021-10-28 23:12:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 117 states have (on average 1.2991452991452992) internal successors, (152), 143 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2021-10-28 23:12:28,503 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 33 [2021-10-28 23:12:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:28,504 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2021-10-28 23:12:28,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2021-10-28 23:12:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:12:28,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:28,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:28,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:28,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:28,705 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr64ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:28,705 INFO L85 PathProgramCache]: Analyzing trace with hash 703031177, now seen corresponding path program 1 times [2021-10-28 23:12:28,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:28,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982225819] [2021-10-28 23:12:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:28,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:28,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:28,707 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:28,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-28 23:12:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:29,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:12:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:29,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:12:29,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 23:12:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:12:29,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:12:29,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:29,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982225819] [2021-10-28 23:12:29,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982225819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:29,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:29,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:12:29,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905637965] [2021-10-28 23:12:29,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:12:29,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:29,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:12:29,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:12:29,416 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:29,679 INFO L93 Difference]: Finished difference Result 157 states and 165 transitions. [2021-10-28 23:12:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:12:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 23:12:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:29,682 INFO L225 Difference]: With dead ends: 157 [2021-10-28 23:12:29,682 INFO L226 Difference]: Without dead ends: 157 [2021-10-28 23:12:29,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:12:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-28 23:12:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2021-10-28 23:12:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 146 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2021-10-28 23:12:29,686 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 34 [2021-10-28 23:12:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:29,686 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2021-10-28 23:12:29,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2021-10-28 23:12:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:12:29,687 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:29,688 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:29,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:29,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:29,896 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr74ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:29,897 INFO L85 PathProgramCache]: Analyzing trace with hash 724025887, now seen corresponding path program 1 times [2021-10-28 23:12:29,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:29,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137641234] [2021-10-28 23:12:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:29,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:29,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:29,899 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:29,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-28 23:12:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:30,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:12:30,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:12:30,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:12:30,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:30,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137641234] [2021-10-28 23:12:30,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137641234] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:30,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:30,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:12:30,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722615509] [2021-10-28 23:12:30,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:12:30,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:30,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:12:30,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:12:30,528 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:30,642 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2021-10-28 23:12:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:12:30,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 23:12:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:30,643 INFO L225 Difference]: With dead ends: 152 [2021-10-28 23:12:30,643 INFO L226 Difference]: Without dead ends: 152 [2021-10-28 23:12:30,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:12:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-28 23:12:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-10-28 23:12:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 122 states have (on average 1.2868852459016393) internal successors, (157), 148 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2021-10-28 23:12:30,648 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 34 [2021-10-28 23:12:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:30,648 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2021-10-28 23:12:30,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2021-10-28 23:12:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:12:30,649 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:30,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:30,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:30,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:30,860 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr34REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1167972262, now seen corresponding path program 1 times [2021-10-28 23:12:30,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:30,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075470265] [2021-10-28 23:12:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:30,861 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:30,862 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:30,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-28 23:12:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:31,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:12:31,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:31,456 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 23:12:31,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-28 23:12:31,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-28 23:12:31,661 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:12:31,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-10-28 23:12:31,765 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:12:31,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 46 [2021-10-28 23:12:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:31,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:33,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem11.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem11.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem11.base|) (bvadd |main_#t~mem11.offset| (_ bv4 32)) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset)))))))) (_ bv1 1)))) is different from false [2021-10-28 23:12:35,641 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem11.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~end~0.base) c_main_~end~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |main_#t~mem11.offset| (_ bv4 32)) c_main_~end~0.base))) c_main_~end~0.base) c_main_~end~0.offset))))))))))) is different from false [2021-10-28 23:12:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:35,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:12:35,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075470265] [2021-10-28 23:12:35,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075470265] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:12:35,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:12:35,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-10-28 23:12:35,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109042234] [2021-10-28 23:12:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:12:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:12:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:12:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-10-28 23:12:35,731 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:12:36,966 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-10-28 23:12:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:12:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 23:12:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:12:36,968 INFO L225 Difference]: With dead ends: 161 [2021-10-28 23:12:36,969 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 23:12:36,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=66, Invalid=150, Unknown=2, NotChecked=54, Total=272 [2021-10-28 23:12:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 23:12:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 151. [2021-10-28 23:12:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 122 states have (on average 1.278688524590164) internal successors, (156), 147 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 159 transitions. [2021-10-28 23:12:36,973 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 159 transitions. Word has length 34 [2021-10-28 23:12:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:12:36,974 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 159 transitions. [2021-10-28 23:12:36,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:12:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 159 transitions. [2021-10-28 23:12:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 23:12:36,975 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:12:36,975 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:12:36,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:37,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:12:37,179 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:12:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1167972261, now seen corresponding path program 1 times [2021-10-28 23:12:37,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:12:37,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964805424] [2021-10-28 23:12:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:37,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:12:37,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:12:37,181 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:12:37,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-28 23:12:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:37,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 23:12:37,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:37,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:12:37,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:12:37,935 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-28 23:12:37,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 36 [2021-10-28 23:12:37,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-28 23:12:38,148 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:12:38,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2021-10-28 23:12:38,287 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:12:38,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 56 [2021-10-28 23:12:38,634 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:12:38,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-28 23:12:38,671 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-28 23:12:38,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 58 [2021-10-28 23:12:38,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 23:12:38,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-28 23:12:38,921 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-10-28 23:12:38,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-10-28 23:12:38,946 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-10-28 23:12:38,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-10-28 23:12:39,105 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:12:39,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 47 [2021-10-28 23:12:39,113 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 23:12:39,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 24 [2021-10-28 23:12:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:39,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:12:49,606 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 27 [2021-10-28 23:13:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:14,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:14,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964805424] [2021-10-28 23:13:14,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964805424] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:14,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:14,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 12] imperfect sequences [] total 25 [2021-10-28 23:13:14,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694450803] [2021-10-28 23:13:14,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 23:13:14,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 23:13:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=566, Unknown=5, NotChecked=0, Total=650 [2021-10-28 23:13:14,715 INFO L87 Difference]: Start difference. First operand 151 states and 159 transitions. Second operand has 26 states, 25 states have (on average 2.24) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:13:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:30,550 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2021-10-28 23:13:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-28 23:13:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.24) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-10-28 23:13:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:30,552 INFO L225 Difference]: With dead ends: 179 [2021-10-28 23:13:30,552 INFO L226 Difference]: Without dead ends: 179 [2021-10-28 23:13:30,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=695, Invalid=3081, Unknown=6, NotChecked=0, Total=3782 [2021-10-28 23:13:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-28 23:13:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2021-10-28 23:13:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 144 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:13:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 156 transitions. [2021-10-28 23:13:30,557 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 156 transitions. Word has length 34 [2021-10-28 23:13:30,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:30,557 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 156 transitions. [2021-10-28 23:13:30,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.24) internal successors, (56), 26 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:13:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 156 transitions. [2021-10-28 23:13:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 23:13:30,558 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:30,558 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:30,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:30,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:30,759 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr60REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:13:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:30,759 INFO L85 PathProgramCache]: Analyzing trace with hash 129788422, now seen corresponding path program 1 times [2021-10-28 23:13:30,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:30,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980063872] [2021-10-28 23:13:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:30,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:30,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:30,760 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:30,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-28 23:13:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:31,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:13:31,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:13:31,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-10-28 23:13:31,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-10-28 23:13:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:31,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:13:32,235 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-10-28 23:13:32,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-28 23:13:32,242 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-10-28 23:13:32,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-10-28 23:13:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:32,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:13:32,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980063872] [2021-10-28 23:13:32,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980063872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:13:32,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:13:32,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-28 23:13:32,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988424217] [2021-10-28 23:13:32,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 23:13:32,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:13:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 23:13:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:13:32,407 INFO L87 Difference]: Start difference. First operand 148 states and 156 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:13:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:34,616 INFO L93 Difference]: Finished difference Result 200 states and 212 transitions. [2021-10-28 23:13:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:13:34,617 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-10-28 23:13:34,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:34,618 INFO L225 Difference]: With dead ends: 200 [2021-10-28 23:13:34,618 INFO L226 Difference]: Without dead ends: 200 [2021-10-28 23:13:34,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:13:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-28 23:13:34,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 159. [2021-10-28 23:13:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 155 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:13:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2021-10-28 23:13:34,622 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 37 [2021-10-28 23:13:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:34,623 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2021-10-28 23:13:34,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:13:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2021-10-28 23:13:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 23:13:34,624 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:34,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:34,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:34,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:34,837 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr76ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 72 more)] === [2021-10-28 23:13:34,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash -271526566, now seen corresponding path program 1 times [2021-10-28 23:13:34,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:13:34,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225566074] [2021-10-28 23:13:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:34,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:13:34,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:13:34,839 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:13:34,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-28 23:13:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:35,555 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:13:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:35,760 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:13:35,760 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:13:35,761 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr76ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:13:35,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:13:35,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:13:35,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:13:35,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:13:35,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:13:35,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:13:35,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:13:35,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:13:35,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:13:35,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:13:35,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:13:35,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-28 23:13:35,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:13:35,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:13:35,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:13:35,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:13:35,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-28 23:13:35,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:13:35,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:13:35,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:13:35,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:13:35,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:13:35,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:13:35,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:13:35,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 23:13:35,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 23:13:35,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:13:35,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:13:35,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:13:35,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-10-28 23:13:35,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 23:13:35,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 23:13:35,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 23:13:35,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 23:13:35,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 23:13:35,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 23:13:35,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 23:13:35,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 23:13:35,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-10-28 23:13:35,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-10-28 23:13:35,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-10-28 23:13:35,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-10-28 23:13:35,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-10-28 23:13:35,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-10-28 23:13:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION [2021-10-28 23:13:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-10-28 23:13:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-10-28 23:13:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-10-28 23:13:35,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-10-28 23:13:35,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:13:35,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-10-28 23:13:35,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-10-28 23:13:35,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION [2021-10-28 23:13:35,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION [2021-10-28 23:13:35,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61REQUIRES_VIOLATION [2021-10-28 23:13:35,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62REQUIRES_VIOLATION [2021-10-28 23:13:35,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr66REQUIRES_VIOLATION [2021-10-28 23:13:35,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr67REQUIRES_VIOLATION [2021-10-28 23:13:35,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr68ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr69ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr70ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr71REQUIRES_VIOLATION [2021-10-28 23:13:35,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr72REQUIRES_VIOLATION [2021-10-28 23:13:35,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr73ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr74ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr75ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:13:35,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:13:35,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:13:35,997 INFO L731 BasicCegarLoop]: Path program 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] [2021-10-28 23:13:36,001 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:13:36,017 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:13:36,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:13:36 BoogieIcfgContainer [2021-10-28 23:13:36,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:13:36,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:13:36,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:13:36,059 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:13:36,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:10:34" (3/4) ... [2021-10-28 23:13:36,063 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:13:36,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:13:36,064 INFO L168 Benchmark]: Toolchain (without parser) took 183595.03 ms. Allocated memory was 58.7 MB in the beginning and 94.4 MB in the end (delta: 35.7 MB). Free memory was 35.6 MB in the beginning and 57.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:36,065 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 58.7 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:36,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.16 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 35.4 MB in the beginning and 52.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:36,065 INFO L168 Benchmark]: Boogie Preprocessor took 76.66 ms. Allocated memory is still 77.6 MB. Free memory was 52.6 MB in the beginning and 49.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:36,066 INFO L168 Benchmark]: RCFGBuilder took 1204.35 ms. Allocated memory is still 77.6 MB. Free memory was 49.1 MB in the beginning and 56.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:36,066 INFO L168 Benchmark]: TraceAbstraction took 181695.15 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 56.2 MB in the beginning and 58.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:36,066 INFO L168 Benchmark]: Witness Printer took 4.51 ms. Allocated memory is still 94.4 MB. Free memory was 58.1 MB in the beginning and 57.6 MB in the end (delta: 456.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:36,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 58.7 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 603.16 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 35.4 MB in the beginning and 52.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.66 ms. Allocated memory is still 77.6 MB. Free memory was 52.6 MB in the beginning and 49.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1204.35 ms. Allocated memory is still 77.6 MB. Free memory was 49.1 MB in the beginning and 56.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 181695.15 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 56.2 MB in the beginning and 58.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.51 ms. Allocated memory is still 94.4 MB. Free memory was 58.1 MB in the beginning and 57.6 MB in the end (delta: 456.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) VAL [null={1:0}] [L1000] null->prev = ((void*)0) VAL [null={1:0}] [L1001] null->colour = BLACK VAL [null={1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null VAL [list={2:0}, null={1:0}] [L1005] list->prev = null VAL [list={2:0}, null={1:0}] [L1006] list->colour = BLACK VAL [list={2:0}, null={1:0}] [L1008] struct TSLL* end = list; VAL [end={2:0}, list={2:0}, null={1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={2:0}, list={2:0}, null={1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={2:0}, list={2:0}, null={1:0}] [L1042] EXPR end->colour VAL [end={2:0}, end->colour=1, list={2:0}, null={1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={2:0}, list={2:0}, null={1:0}] [L1045] EXPR end->colour VAL [end={2:0}, end->colour=1, list={2:0}, null={1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={2:0}, end->next={1:0}, list={2:0}, null={1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={1:0}, list={2:0}, null={1:0}] [L1056] COND TRUE null != list VAL [end={1:0}, list={2:0}, null={1:0}] [L1058] EXPR list->colour VAL [end={1:0}, list={2:0}, list->colour=1, null={1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={1:0}, list={2:0}, list->next={1:0}, null={1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={1:0}, list={2:0}, null={1:0}] [L1068] free(list) VAL [end={1:0}, list={2:0}, null={1:0}] [L1068] free(list) [L1069] list = end VAL [end={1:0}, list={1:0}, null={1:0}] [L1056] COND FALSE !(null != list) VAL [end={1:0}, list={1:0}, null={1:0}] [L1073] return 0; VAL [\result=0, end={1:0}, list={1:0}, null={1:0}] - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1004]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1005]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1014]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1015]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1026]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 178 locations, 77 error locations. Started 1 CEGAR loops. OverallTime: 181.5s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 91.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2231 SDtfs, 3808 SDslu, 5840 SDs, 0 SdLazy, 7682 SolverSat, 399 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 25.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1260 GetRequests, 946 SyntacticMatches, 21 SemanticMatches, 293 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 130.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=0, InterpolantAutomatonStates: 240, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 555 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 76.2s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1096 ConstructedInterpolants, 57 QuantifiedInterpolants, 7705 SizeOfPredicates, 127 NumberOfNonLiveVariables, 3280 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 48 InterpolantComputations, 44 PerfectInterpolantSequences, 8/14 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 [2021-10-28 23:13:36,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_316a5d66-b8f1-4d83-8636-8fe0ca200ae7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...